Example #1
0
    def connect_audio_stage(self, input_port):
        stereo_rate = self.demod_rate
        normalizer = TWO_PI / stereo_rate
        pilot_tone = 19000
        pilot_low = pilot_tone * 0.98
        pilot_high = pilot_tone * 1.02

        def make_audio_filter():
            return grfilter.fir_filter_fff(
                stereo_rate // self.__audio_int_rate,  # decimation
                firdes.low_pass(1.0, stereo_rate, 15000, 5000,
                                firdes.WIN_HAMMING))

        stereo_pilot_filter = grfilter.fir_filter_fcc(
            1,  # decimation
            firdes.complex_band_pass(1.0, stereo_rate, pilot_low, pilot_high,
                                     300))  # TODO magic number from gqrx
        stereo_pilot_pll = analog.pll_refout_cc(
            loop_bw=0.001,
            max_freq=normalizer * pilot_high,
            min_freq=normalizer * pilot_low)
        stereo_pilot_doubler = blocks.multiply_cc()
        stereo_pilot_out = blocks.complex_to_real()
        difference_channel_mixer = blocks.multiply_ff()
        difference_channel_filter = make_audio_filter()
        mono_channel_filter = make_audio_filter()
        mixL = blocks.add_ff(1)
        mixR = blocks.sub_ff(1)

        # connections
        self.connect(input_port, mono_channel_filter)
        if self.__decode_stereo:
            # stereo pilot tone tracker
            self.connect(input_port, stereo_pilot_filter, stereo_pilot_pll)
            self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 0))
            self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 1))
            self.connect(stereo_pilot_doubler, stereo_pilot_out)

            # pick out stereo left-right difference channel (at stereo_rate)
            self.connect(input_port, (difference_channel_mixer, 0))
            self.connect(stereo_pilot_out, (difference_channel_mixer, 1))
            self.connect(
                difference_channel_mixer,
                blocks.multiply_const_ff(
                    50
                ),  # TODO: Completely empirical fudge factor. This should not be necessary. We're losing signal somewhere?
                difference_channel_filter)

            # recover left/right channels (at self.__audio_int_rate)
            self.connect(difference_channel_filter, (mixL, 1))
            self.connect(difference_channel_filter, (mixR, 1))
            resamplerL = self._make_resampler((mixL, 0), self.__audio_int_rate)
            resamplerR = self._make_resampler((mixR, 0), self.__audio_int_rate)
            self.connect(mono_channel_filter, (mixL, 0))
            self.connect(mono_channel_filter, (mixR, 0))
            self.connect_audio_output(resamplerL, resamplerR)
        else:
            resampler = self._make_resampler(mono_channel_filter,
                                             self.__audio_int_rate)
            self.connect_audio_output(resampler, resampler)
def test_fir_filter_fcc():
    top = gr.top_block()
    src = blocks.null_source(gr.sizeof_float)
    firfilter = filter.fir_filter_fcc(1, [complex(random.random(), random.random()) for _ in range(256)])
    probe = blocks.probe_rate(gr.sizeof_gr_complex)
    top.connect(src, firfilter, probe)

    return top, probe
Example #3
0
def test_fir_filter_fcc():
    top = gr.top_block()
    src = blocks.null_source(gr.sizeof_float)
    firfilter = filter.fir_filter_fcc(
        1, [complex(random.random(), random.random()) for _ in range(256)])
    probe = blocks.probe_rate(gr.sizeof_gr_complex)
    top.connect(src, firfilter, probe)

    return top, probe
Example #4
0
    def connect_audio_stage(self, input_port):
        stereo_rate = self.demod_rate
        normalizer = TWO_PI / stereo_rate
        pilot_tone = 19000
        pilot_low = pilot_tone * 0.9
        pilot_high = pilot_tone * 1.1

        def make_audio_filter():
            return grfilter.fir_filter_fff(
                stereo_rate // self.__audio_int_rate,  # decimation
                firdes.low_pass(1.0, stereo_rate, 15000, 5000,
                                firdes.WIN_HAMMING))

        stereo_pilot_filter = grfilter.fir_filter_fcc(
            1,  # decimation
            firdes.complex_band_pass(1.0, stereo_rate, pilot_low, pilot_high,
                                     300))  # TODO magic number from gqrx
        stereo_pilot_pll = analog.pll_refout_cc(
            0.001,  # TODO magic number from gqrx
            normalizer * pilot_high,
            normalizer * pilot_low)
        stereo_pilot_doubler = blocks.multiply_cc()
        stereo_pilot_out = blocks.complex_to_imag()
        difference_channel_mixer = blocks.multiply_ff()
        difference_channel_filter = make_audio_filter()
        mono_channel_filter = make_audio_filter()
        mixL = blocks.add_ff(1)
        mixR = blocks.sub_ff(1)

        # connections
        self.connect(input_port, mono_channel_filter)
        if self.stereo:
            # stereo pilot tone tracker
            self.connect(input_port, stereo_pilot_filter, stereo_pilot_pll)
            self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 0))
            self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 1))
            self.connect(stereo_pilot_doubler, stereo_pilot_out)

            # pick out stereo left-right difference channel (at stereo_rate)
            self.connect(input_port, (difference_channel_mixer, 0))
            self.connect(stereo_pilot_out, (difference_channel_mixer, 1))
            self.connect(difference_channel_mixer, difference_channel_filter)

            # recover left/right channels (at self.__audio_int_rate)
            self.connect(difference_channel_filter, (mixL, 1))
            self.connect(difference_channel_filter, (mixR, 1))
            resamplerL = self._make_resampler((mixL, 0), self.__audio_int_rate)
            resamplerR = self._make_resampler((mixR, 0), self.__audio_int_rate)
            self.connect(mono_channel_filter, (mixL, 0))
            self.connect(mono_channel_filter, (mixR, 0))
            self.connect_audio_output(resamplerL, resamplerR)
        else:
            resampler = self._make_resampler(mono_channel_filter,
                                             self.__audio_int_rate)
            self.connect_audio_output(resampler, resampler)
Example #5
0
    def connect_audio_stage(self, input_port):
        stereo_rate = self.demod_rate
        normalizer = TWO_PI / stereo_rate
        pilot_tone = 19000
        pilot_low = pilot_tone * 0.9
        pilot_high = pilot_tone * 1.1

        def make_audio_filter():
            return grfilter.fir_filter_fff(
                stereo_rate // self.__audio_int_rate,  # decimation
                firdes.low_pass(1.0, stereo_rate, 15000, 5000, firdes.WIN_HAMMING),
            )

        stereo_pilot_filter = grfilter.fir_filter_fcc(
            1, firdes.complex_band_pass(1.0, stereo_rate, pilot_low, pilot_high, 300)  # decimation
        )  # TODO magic number from gqrx
        stereo_pilot_pll = analog.pll_refout_cc(
            0.001, normalizer * pilot_high, normalizer * pilot_low  # TODO magic number from gqrx
        )
        stereo_pilot_doubler = blocks.multiply_cc()
        stereo_pilot_out = blocks.complex_to_imag()
        difference_channel_mixer = blocks.multiply_ff()
        difference_channel_filter = make_audio_filter()
        mono_channel_filter = make_audio_filter()
        mixL = blocks.add_ff(1)
        mixR = blocks.sub_ff(1)

        # connections
        self.connect(input_port, mono_channel_filter)
        if self.stereo:
            # stereo pilot tone tracker
            self.connect(input_port, stereo_pilot_filter, stereo_pilot_pll)
            self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 0))
            self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 1))
            self.connect(stereo_pilot_doubler, stereo_pilot_out)

            # pick out stereo left-right difference channel (at stereo_rate)
            self.connect(input_port, (difference_channel_mixer, 0))
            self.connect(stereo_pilot_out, (difference_channel_mixer, 1))
            self.connect(difference_channel_mixer, difference_channel_filter)

            # recover left/right channels (at self.__audio_int_rate)
            self.connect(difference_channel_filter, (mixL, 1))
            self.connect(difference_channel_filter, (mixR, 1))
            resamplerL = self._make_resampler((mixL, 0), self.__audio_int_rate)
            resamplerR = self._make_resampler((mixR, 0), self.__audio_int_rate)
            self.connect(mono_channel_filter, (mixL, 0))
            self.connect(mono_channel_filter, (mixR, 0))
            self.connect_audio_output(resamplerL, resamplerR)
        else:
            resampler = self._make_resampler(mono_channel_filter, self.__audio_int_rate)
            self.connect_audio_output(resampler, resampler)
Example #6
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(
            self, title="Stereo FM receiver and RDS Decoder")
        _icon_path = "/usr/share/icons/hicolor/24x24/apps/gnuradio-grc.png"
        self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 1000000
        self.bb_decim = bb_decim = 4
        self.freq_offset = freq_offset = 250000
        self.freq = freq = 97e6
        self.baseband_rate = baseband_rate = samp_rate / bb_decim
        self.audio_decim = audio_decim = 5
        self.xlate_bandwidth = xlate_bandwidth = 100000
        self.volume = volume = 0
        self.gain = gain = 20
        self.freq_tune = freq_tune = freq - freq_offset
        self.audio_rate = audio_rate = 48000
        self.audio_decim_rate = audio_decim_rate = baseband_rate / audio_decim

        ##################################################
        # Blocks
        ##################################################
        _volume_sizer = wx.BoxSizer(wx.VERTICAL)
        self._volume_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_volume_sizer,
            value=self.volume,
            callback=self.set_volume,
            label='Volume',
            converter=forms.float_converter(),
            proportion=0,
        )
        self._volume_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_volume_sizer,
            value=self.volume,
            callback=self.set_volume,
            minimum=-20,
            maximum=10,
            num_steps=300,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_volume_sizer, 0, 1, 1, 1)
        self.nb = self.nb = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "BB")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "Demod")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "L+R")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "Pilot")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "DSBSC")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "RDS")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "L-R")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "RDS constellation")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "Waterfall")
        self.GridAdd(self.nb, 2, 0, 1, 2)
        _gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._gain_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_gain_sizer,
            value=self.gain,
            callback=self.set_gain,
            label='RF Gain',
            converter=forms.float_converter(),
            proportion=0,
        )
        self._gain_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_gain_sizer,
            value=self.gain,
            callback=self.set_gain,
            minimum=0,
            maximum=49.6,
            num_steps=124,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_gain_sizer, 0, 0, 1, 1)
        _freq_sizer = wx.BoxSizer(wx.VERTICAL)
        self._freq_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_freq_sizer,
            value=self.freq,
            callback=self.set_freq,
            label='Freq',
            converter=forms.float_converter(),
            proportion=0,
        )
        self._freq_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_freq_sizer,
            value=self.freq,
            callback=self.set_freq,
            minimum=88.1e6,
            maximum=107.9e6,
            num_steps=99,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_freq_sizer, 1, 0, 1, 2)
        self.wxgui_waterfallsink2_0 = waterfallsink2.waterfall_sink_f(
            self.nb.GetPage(8).GetWin(),
            baseband_freq=0,
            dynamic_range=100,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=baseband_rate,
            fft_size=512,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title='Waterfall Plot',
        )
        self.nb.GetPage(8).Add(self.wxgui_waterfallsink2_0.win)
        self.wxgui_scopesink2_1 = scopesink2.scope_sink_c(
            self.nb.GetPage(7).GetWin(),
            title='Scope Plot',
            sample_rate=2375,
            v_scale=0.4,
            v_offset=0,
            t_scale=0,
            ac_couple=False,
            xy_mode=True,
            num_inputs=1,
            trig_mode=wxgui.TRIG_MODE_AUTO,
            y_axis_label='Counts',
        )
        self.nb.GetPage(7).Add(self.wxgui_scopesink2_1.win)
        self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
            self.nb.GetPage(3).GetWin(),
            title='Pilot',
            sample_rate=baseband_rate,
            v_scale=0,
            v_offset=0,
            t_scale=0,
            ac_couple=False,
            xy_mode=False,
            num_inputs=1,
            trig_mode=wxgui.TRIG_MODE_AUTO,
            y_axis_label='Counts',
        )
        self.nb.GetPage(3).Add(self.wxgui_scopesink2_0.win)
        self.wxgui_fftsink2_0_0_0_1_0_1 = fftsink2.fft_sink_c(
            self.nb.GetPage(5).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=audio_rate,
            fft_size=1024,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title='RDS',
            peak_hold=False,
        )
        self.nb.GetPage(5).Add(self.wxgui_fftsink2_0_0_0_1_0_1.win)
        self.wxgui_fftsink2_0_0_0_1_0_0 = fftsink2.fft_sink_f(
            self.nb.GetPage(6).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=-50,
            ref_scale=2.0,
            sample_rate=baseband_rate,
            fft_size=1024,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title='L-R',
            peak_hold=False,
        )
        self.nb.GetPage(6).Add(self.wxgui_fftsink2_0_0_0_1_0_0.win)
        self.wxgui_fftsink2_0_0_0_1 = fftsink2.fft_sink_f(
            self.nb.GetPage(4).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=baseband_rate,
            fft_size=1024,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title='DSBSC Sub-carrier',
            peak_hold=False,
        )
        self.nb.GetPage(4).Add(self.wxgui_fftsink2_0_0_0_1.win)
        self.wxgui_fftsink2_0_0_0 = fftsink2.fft_sink_f(
            self.nb.GetPage(2).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=audio_decim_rate,
            fft_size=1024,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title='L+R',
            peak_hold=False,
        )
        self.nb.GetPage(2).Add(self.wxgui_fftsink2_0_0_0.win)
        self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_f(
            self.nb.GetPage(1).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=baseband_rate,
            fft_size=1024,
            fft_rate=15,
            average=True,
            avg_alpha=0.8,
            title='FM Demod',
            peak_hold=False,
        )
        self.nb.GetPage(1).Add(self.wxgui_fftsink2_0_0.win)
        self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
            self.nb.GetPage(0).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=-30,
            ref_scale=2.0,
            sample_rate=samp_rate,
            fft_size=1024,
            fft_rate=15,
            average=True,
            avg_alpha=0.8,
            title='Baseband',
            peak_hold=False,
        )
        self.nb.GetPage(0).Add(self.wxgui_fftsink2_0.win)
        self.root_raised_cosine_filter_0 = filter.fir_filter_ccf(
            1,
            firdes.root_raised_cosine(1, samp_rate / bb_decim / audio_decim,
                                      2375, 1, 100))
        self.rational_resampler_xxx_0_0 = filter.rational_resampler_fff(
            interpolation=audio_rate,
            decimation=audio_decim_rate,
            taps=None,
            fractional_bw=None,
        )
        self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
            interpolation=audio_rate,
            decimation=audio_decim_rate,
            taps=None,
            fractional_bw=None,
        )
        self.osmosdr_source_0 = osmosdr.source(args="numchan=" + str(1) + " " +
                                               '')
        self.osmosdr_source_0.set_sample_rate(samp_rate)
        self.osmosdr_source_0.set_center_freq(freq_tune, 0)
        self.osmosdr_source_0.set_freq_corr(0, 0)
        self.osmosdr_source_0.set_dc_offset_mode(0, 0)
        self.osmosdr_source_0.set_iq_balance_mode(0, 0)
        self.osmosdr_source_0.set_gain_mode(False, 0)
        self.osmosdr_source_0.set_gain(gain, 0)
        self.osmosdr_source_0.set_if_gain(20, 0)
        self.osmosdr_source_0.set_bb_gain(20, 0)
        self.osmosdr_source_0.set_antenna('', 0)
        self.osmosdr_source_0.set_bandwidth(0, 0)

        self.gr_rds_parser_0 = rds.parser(True, False, 0)
        self.gr_rds_panel_0 = rds.rdsPanel(freq, self.GetWin())
        self.Add(self.gr_rds_panel_0.panel)
        self.gr_rds_decoder_0 = rds.decoder(False, False)
        self.freq_xlating_fir_filter_xxx_1 = filter.freq_xlating_fir_filter_fcc(
            audio_decim, (firdes.low_pass(2500.0, baseband_rate, 2.4e3, 2e3,
                                          firdes.WIN_HAMMING)), 57e3,
            baseband_rate)
        self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_ccc(
            1, (firdes.low_pass(1, samp_rate, xlate_bandwidth, 100000)),
            freq_offset, samp_rate)
        self.fir_filter_xxx_5 = filter.fir_filter_fff(
            audio_decim, (firdes.low_pass(1.0, baseband_rate, 20e3, 40e3,
                                          firdes.WIN_HAMMING)))
        self.fir_filter_xxx_5.declare_sample_delay(0)
        self.fir_filter_xxx_3 = filter.fir_filter_fff(
            1, (firdes.band_pass(1.0, baseband_rate, 38e3 - 13e3, 38e3 + 13e3,
                                 3e3, firdes.WIN_HAMMING)))
        self.fir_filter_xxx_3.declare_sample_delay(0)
        self.fir_filter_xxx_2 = filter.fir_filter_fcc(
            1, (firdes.complex_band_pass(1.0, baseband_rate, 19e3 - 500,
                                         19e3 + 500, 1e3, firdes.WIN_HAMMING)))
        self.fir_filter_xxx_2.declare_sample_delay(0)
        self.fir_filter_xxx_1 = filter.fir_filter_fff(
            audio_decim, (firdes.low_pass(1.0, baseband_rate, 13e3, 3e3,
                                          firdes.WIN_HAMMING)))
        self.fir_filter_xxx_1.declare_sample_delay(0)
        self.digital_mpsk_receiver_cc_0 = digital.mpsk_receiver_cc(
            2, 0, 1 * cmath.pi / 100.0, -0.06, 0.06, 0.5, 0.05,
            samp_rate / bb_decim / audio_decim / 2375.0, 0.001, 0.005)
        self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(2)
        self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
        self.blocks_sub_xx_0 = blocks.sub_ff(1)
        self.blocks_multiply_xx_1 = blocks.multiply_vcc(1)
        self.blocks_multiply_xx_0 = blocks.multiply_vff(1)
        self.blocks_multiply_const_vxx_0_0 = blocks.multiply_const_vff(
            (10**(1. * (volume + 15) / 10), ))
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff(
            (10**(1. * (volume + 15) / 10), ))
        self.blocks_keep_one_in_n_0 = blocks.keep_one_in_n(
            gr.sizeof_char * 1, 2)
        self.blocks_complex_to_real_0 = blocks.complex_to_real(1)
        self.blocks_complex_to_imag_0 = blocks.complex_to_imag(1)
        self.blocks_add_xx_0 = blocks.add_vff(1)
        self.audio_sink_0 = audio.sink(audio_rate, '', True)
        self.analog_wfm_rcv_0 = analog.wfm_rcv(
            quad_rate=samp_rate,
            audio_decimation=bb_decim,
        )
        self.analog_pll_refout_cc_0 = analog.pll_refout_cc(
            0.001, 2 * math.pi * (19000 + 200) / baseband_rate,
            2 * math.pi * (19000 - 200) / baseband_rate)
        self.analog_fm_deemph_0_0_0 = analog.fm_deemph(fs=audio_decim_rate,
                                                       tau=75e-6)
        self.analog_fm_deemph_0_0 = analog.fm_deemph(fs=audio_decim_rate,
                                                     tau=75e-6)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.gr_rds_decoder_0, 'out'),
                         (self.gr_rds_parser_0, 'in'))
        self.msg_connect((self.gr_rds_parser_0, 'out'),
                         (self.gr_rds_panel_0, 'in'))
        self.connect((self.analog_fm_deemph_0_0, 0),
                     (self.blocks_multiply_const_vxx_0_0, 0))
        self.connect((self.analog_fm_deemph_0_0_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.analog_pll_refout_cc_0, 0),
                     (self.blocks_multiply_xx_1, 0))
        self.connect((self.analog_pll_refout_cc_0, 0),
                     (self.blocks_multiply_xx_1, 1))
        self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_1, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_2, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_3, 0))
        self.connect((self.analog_wfm_rcv_0, 0),
                     (self.freq_xlating_fir_filter_xxx_1, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.wxgui_fftsink2_0_0, 0))
        self.connect((self.analog_wfm_rcv_0, 0),
                     (self.wxgui_waterfallsink2_0, 0))
        self.connect((self.blocks_add_xx_0, 0),
                     (self.analog_fm_deemph_0_0_0, 0))
        self.connect((self.blocks_complex_to_imag_0, 0),
                     (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_complex_to_imag_0, 0),
                     (self.wxgui_scopesink2_0, 0))
        self.connect((self.blocks_complex_to_real_0, 0),
                     (self.digital_binary_slicer_fb_0, 0))
        self.connect((self.blocks_keep_one_in_n_0, 0),
                     (self.digital_diff_decoder_bb_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.rational_resampler_xxx_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0_0, 0),
                     (self.rational_resampler_xxx_0_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.fir_filter_xxx_5, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.wxgui_fftsink2_0_0_0_1_0_0, 0))
        self.connect((self.blocks_multiply_xx_1, 0),
                     (self.blocks_complex_to_imag_0, 0))
        self.connect((self.blocks_sub_xx_0, 0), (self.analog_fm_deemph_0_0, 0))
        self.connect((self.digital_binary_slicer_fb_0, 0),
                     (self.blocks_keep_one_in_n_0, 0))
        self.connect((self.digital_diff_decoder_bb_0, 0),
                     (self.gr_rds_decoder_0, 0))
        self.connect((self.digital_mpsk_receiver_cc_0, 0),
                     (self.blocks_complex_to_real_0, 0))
        self.connect((self.digital_mpsk_receiver_cc_0, 0),
                     (self.wxgui_scopesink2_1, 0))
        self.connect((self.fir_filter_xxx_1, 0), (self.blocks_add_xx_0, 0))
        self.connect((self.fir_filter_xxx_1, 0), (self.blocks_sub_xx_0, 0))
        self.connect((self.fir_filter_xxx_1, 0),
                     (self.wxgui_fftsink2_0_0_0, 0))
        self.connect((self.fir_filter_xxx_2, 0),
                     (self.analog_pll_refout_cc_0, 0))
        self.connect((self.fir_filter_xxx_3, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.fir_filter_xxx_3, 0),
                     (self.wxgui_fftsink2_0_0_0_1, 0))
        self.connect((self.fir_filter_xxx_5, 0), (self.blocks_add_xx_0, 1))
        self.connect((self.fir_filter_xxx_5, 0), (self.blocks_sub_xx_0, 1))
        self.connect((self.freq_xlating_fir_filter_xxx_0, 0),
                     (self.analog_wfm_rcv_0, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_0, 0),
                     (self.wxgui_fftsink2_0, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_1, 0),
                     (self.root_raised_cosine_filter_0, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_1, 0),
                     (self.wxgui_fftsink2_0_0_0_1_0_1, 0))
        self.connect((self.osmosdr_source_0, 0),
                     (self.freq_xlating_fir_filter_xxx_0, 0))
        self.connect((self.rational_resampler_xxx_0, 0),
                     (self.audio_sink_0, 0))
        self.connect((self.rational_resampler_xxx_0_0, 0),
                     (self.audio_sink_0, 1))
        self.connect((self.root_raised_cosine_filter_0, 0),
                     (self.digital_mpsk_receiver_cc_0, 0))
Example #7
0
    def __init__(self, demod_rate, audio_decimation):
        """
        Hierarchical block for demodulating a broadcast FM signal.

        The input is the downconverted complex baseband signal (gr_complex).
        The output is two streams of the demodulated audio (float) 0=Left, 1=Right.

        Args:
            demod_rate: input sample rate of complex baseband input. (float)
            audio_decimation: how much to decimate demod_rate to get to audio. (integer) FIXME: Not actually implemented!
        """
        gr.hier_block2.__init__(
            self,
            "wfm_rcv_pll",
            gr.io_signature(1, 1, gr.sizeof_gr_complex),  # Input signature
            gr.io_signature(2, 2, gr.sizeof_float))  # Output signature

        if audio_decimation != int(audio_decimation):
            raise ValueError("audio_decimation needs to be an integer")
        audio_decimation = int(audio_decimation)

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 3840000
        self.rf_decim = rf_decim = 10
        self.demod_rate = demod_rate = (int)(samp_rate / rf_decim)
        self.stereo_carrier_filter_coeffs_0 = stereo_carrier_filter_coeffs_0 = firdes.band_pass(
            1.0, demod_rate, 37600, 38400, 400, fft.window.WIN_HAMMING, 6.76)
        self.stereo_carrier_filter_coeffs = stereo_carrier_filter_coeffs = firdes.complex_band_pass(
            1.0, demod_rate, 18980, 19020, 1500, fft.window.WIN_HAMMING, 6.76)
        self.deviation = deviation = 75000
        self.audio_filter = audio_filter = firdes.low_pass(
            1, demod_rate, 15000, 1500, fft.window.WIN_HAMMING, 6.76)
        self.audio_decim = audio_decim = (int)(demod_rate / 48000)

        ##################################################
        # Blocks
        ##################################################
        self.fir_filter_xxx_1 = filter.fir_filter_fcc(
            1, stereo_carrier_filter_coeffs)
        self.fir_filter_xxx_1.declare_sample_delay(0)
        self.fft_filter_xxx_3 = filter.fft_filter_fff(
            1, stereo_carrier_filter_coeffs_0, 1)
        self.fft_filter_xxx_3.declare_sample_delay(0)
        self.fft_filter_xxx_2 = filter.fft_filter_fff(audio_decim,
                                                      audio_filter, 1)
        self.fft_filter_xxx_2.declare_sample_delay(0)
        self.fft_filter_xxx_1 = filter.fft_filter_fff(audio_decim,
                                                      audio_filter, 1)
        self.fft_filter_xxx_1.declare_sample_delay(0)
        self.blocks_multiply_xx_2 = blocks.multiply_vff(1)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0_1 = blocks.multiply_const_ff(5.5)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_ff(-5.5)
        self.blocks_complex_to_imag_0 = blocks.complex_to_imag(1)
        self.blocks_add_xx_0_0 = blocks.add_vff(1)
        self.blocks_add_xx_0 = blocks.add_vff(1)
        self.analog_quadrature_demod_cf_0 = analog.quadrature_demod_cf(
            demod_rate / (2 * math.pi * deviation))
        self.analog_pll_refout_cc_0 = analog.pll_refout_cc(
            0.001, 2 * math.pi * 19200 / demod_rate,
            2 * math.pi * 18800 / demod_rate)
        self.analog_fm_deemph_0_0 = analog.fm_deemph(fs=48000, tau=75e-6)
        self.analog_fm_deemph_0 = analog.fm_deemph(fs=48000, tau=75e-6)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.analog_fm_deemph_0, 0), (self, 0))
        self.connect((self.analog_fm_deemph_0_0, 0), (self, 1))
        self.connect((self.analog_pll_refout_cc_0, 0),
                     (self.blocks_multiply_xx_0, 1))
        self.connect((self.analog_pll_refout_cc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.analog_quadrature_demod_cf_0, 0),
                     (self.blocks_multiply_xx_2, 0))
        self.connect((self.analog_quadrature_demod_cf_0, 0),
                     (self.fft_filter_xxx_1, 0))
        self.connect((self.analog_quadrature_demod_cf_0, 0),
                     (self.fir_filter_xxx_1, 0))
        self.connect((self.blocks_add_xx_0, 0), (self.analog_fm_deemph_0, 0))
        self.connect((self.blocks_add_xx_0_0, 0),
                     (self.analog_fm_deemph_0_0, 0))
        self.connect((self.blocks_complex_to_imag_0, 0),
                     (self.fft_filter_xxx_3, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.blocks_add_xx_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0_1, 0),
                     (self.blocks_add_xx_0_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.blocks_complex_to_imag_0, 0))
        self.connect((self.blocks_multiply_xx_2, 0),
                     (self.fft_filter_xxx_2, 0))
        self.connect((self.fft_filter_xxx_1, 0), (self.blocks_add_xx_0, 1))
        self.connect((self.fft_filter_xxx_1, 0), (self.blocks_add_xx_0_0, 1))
        self.connect((self.fft_filter_xxx_2, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.fft_filter_xxx_2, 0),
                     (self.blocks_multiply_const_vxx_0_1, 0))
        self.connect((self.fft_filter_xxx_3, 0),
                     (self.blocks_multiply_xx_2, 1))
        self.connect((self.fir_filter_xxx_1, 0),
                     (self.analog_pll_refout_cc_0, 0))
        self.connect((self, 0), (self.analog_quadrature_demod_cf_0, 0))
Example #8
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="Stereo FM receiver and RDS Decoder")

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 1000000
        self.bb_decim = bb_decim = 4
        self.freq_offset = freq_offset = 250000
        self.freq = freq = 106.1e6
        self.baseband_rate = baseband_rate = samp_rate/bb_decim
        self.audio_decim = audio_decim = 5
        self.xlate_bandwidth = xlate_bandwidth = 100000
        self.volume = volume = 0
        self.gain = gain = 37.6
        self.freq_tune = freq_tune = freq - freq_offset
        self.audio_rate = audio_rate = 48000
        self.audio_decim_rate = audio_decim_rate = baseband_rate/audio_decim

        ##################################################
        # Blocks
        ##################################################
        _volume_sizer = wx.BoxSizer(wx.VERTICAL)
        self._volume_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_volume_sizer,
        	value=self.volume,
        	callback=self.set_volume,
        	label="Volume",
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._volume_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_volume_sizer,
        	value=self.volume,
        	callback=self.set_volume,
        	minimum=-20,
        	maximum=10,
        	num_steps=300,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.GridAdd(_volume_sizer, 0, 1, 1, 1)
        self.nb = self.nb = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "BB")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "Demod")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "L+R")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "Pilot")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "DSBSC")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "RDS")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "L-R")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "RDS constellation")
        self.nb.AddPage(grc_wxgui.Panel(self.nb), "Waterfall")
        self.GridAdd(self.nb, 2, 0, 1, 2)
        _gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._gain_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_gain_sizer,
        	value=self.gain,
        	callback=self.set_gain,
        	label="RF Gain",
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._gain_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_gain_sizer,
        	value=self.gain,
        	callback=self.set_gain,
        	minimum=0,
        	maximum=49.6,
        	num_steps=124,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.GridAdd(_gain_sizer, 0, 0, 1, 1)
        _freq_sizer = wx.BoxSizer(wx.VERTICAL)
        self._freq_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_freq_sizer,
        	value=self.freq,
        	callback=self.set_freq,
        	label="Freq",
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._freq_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_freq_sizer,
        	value=self.freq,
        	callback=self.set_freq,
        	minimum=88.1e6,
        	maximum=107.9e6,
        	num_steps=99,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.GridAdd(_freq_sizer, 1, 0, 1, 2)
        self.wxgui_waterfallsink2_0 = waterfallsink2.waterfall_sink_f(
        	self.nb.GetPage(8).GetWin(),
        	baseband_freq=0,
        	dynamic_range=100,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=baseband_rate,
        	fft_size=512,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="Waterfall Plot",
        )
        self.nb.GetPage(8).Add(self.wxgui_waterfallsink2_0.win)
        self.wxgui_scopesink2_1 = scopesink2.scope_sink_c(
        	self.nb.GetPage(7).GetWin(),
        	title="Scope Plot",
        	sample_rate=2375,
        	v_scale=0.4,
        	v_offset=0,
        	t_scale=0,
        	ac_couple=False,
        	xy_mode=True,
        	num_inputs=1,
        	trig_mode=wxgui.TRIG_MODE_AUTO,
        	y_axis_label="Counts",
        )
        self.nb.GetPage(7).Add(self.wxgui_scopesink2_1.win)
        self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
        	self.nb.GetPage(3).GetWin(),
        	title="Pilot",
        	sample_rate=baseband_rate,
        	v_scale=0,
        	v_offset=0,
        	t_scale=0,
        	ac_couple=False,
        	xy_mode=False,
        	num_inputs=1,
        	trig_mode=wxgui.TRIG_MODE_AUTO,
        	y_axis_label="Counts",
        )
        self.nb.GetPage(3).Add(self.wxgui_scopesink2_0.win)
        self.wxgui_fftsink2_0_0_0_1_0_1 = fftsink2.fft_sink_c(
        	self.nb.GetPage(5).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=audio_rate,
        	fft_size=1024,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="RDS",
        	peak_hold=False,
        )
        self.nb.GetPage(5).Add(self.wxgui_fftsink2_0_0_0_1_0_1.win)
        self.wxgui_fftsink2_0_0_0_1_0_0 = fftsink2.fft_sink_f(
        	self.nb.GetPage(6).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=-50,
        	ref_scale=2.0,
        	sample_rate=baseband_rate,
        	fft_size=1024,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="L-R",
        	peak_hold=False,
        )
        self.nb.GetPage(6).Add(self.wxgui_fftsink2_0_0_0_1_0_0.win)
        self.wxgui_fftsink2_0_0_0_1 = fftsink2.fft_sink_f(
        	self.nb.GetPage(4).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=baseband_rate,
        	fft_size=1024,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="DSBSC Sub-carrier",
        	peak_hold=False,
        )
        self.nb.GetPage(4).Add(self.wxgui_fftsink2_0_0_0_1.win)
        self.wxgui_fftsink2_0_0_0 = fftsink2.fft_sink_f(
        	self.nb.GetPage(2).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=audio_decim_rate,
        	fft_size=1024,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="L+R",
        	peak_hold=False,
        )
        self.nb.GetPage(2).Add(self.wxgui_fftsink2_0_0_0.win)
        self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_f(
        	self.nb.GetPage(1).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=baseband_rate,
        	fft_size=1024,
        	fft_rate=15,
        	average=True,
        	avg_alpha=0.8,
        	title="FM Demod",
        	peak_hold=False,
        )
        self.nb.GetPage(1).Add(self.wxgui_fftsink2_0_0.win)
        self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
        	self.nb.GetPage(0).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=-30,
        	ref_scale=2.0,
        	sample_rate=samp_rate,
        	fft_size=1024,
        	fft_rate=15,
        	average=True,
        	avg_alpha=0.8,
        	title="Baseband",
        	peak_hold=False,
        )
        self.nb.GetPage(0).Add(self.wxgui_fftsink2_0.win)
        self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + "" )
        self.rtlsdr_source_0.set_sample_rate(samp_rate)
        self.rtlsdr_source_0.set_center_freq(freq_tune, 0)
        self.rtlsdr_source_0.set_freq_corr(0, 0)
        self.rtlsdr_source_0.set_dc_offset_mode(0, 0)
        self.rtlsdr_source_0.set_iq_balance_mode(0, 0)
        self.rtlsdr_source_0.set_gain_mode(False, 0)
        self.rtlsdr_source_0.set_gain(gain, 0)
        self.rtlsdr_source_0.set_if_gain(20, 0)
        self.rtlsdr_source_0.set_bb_gain(20, 0)
        self.rtlsdr_source_0.set_antenna("", 0)
        self.rtlsdr_source_0.set_bandwidth(0, 0)
          
        self.root_raised_cosine_filter_0 = filter.fir_filter_ccf(1, firdes.root_raised_cosine(
        	1, samp_rate/bb_decim/audio_decim, 2375, 1, 100))
        self.rational_resampler_xxx_0_0 = filter.rational_resampler_fff(
                interpolation=audio_rate,
                decimation=audio_decim_rate,
                taps=None,
                fractional_bw=None,
        )
        self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
                interpolation=audio_rate,
                decimation=audio_decim_rate,
                taps=None,
                fractional_bw=None,
        )
        self.gr_rds_parser_0 = rds.parser(False, True)
        self.gr_rds_panel_0 = rds.rdsPanel(freq, self.GetWin())
        self.Add(self.gr_rds_panel_0.panel)
        self.gr_rds_decoder_0 = rds.decoder(False, False)
        self.freq_xlating_fir_filter_xxx_1 = filter.freq_xlating_fir_filter_fcc(audio_decim, (firdes.low_pass(2500.0,baseband_rate,2.4e3,2e3,firdes.WIN_HAMMING)), 57e3, baseband_rate)
        self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_ccc(1, (firdes.low_pass(1, samp_rate, xlate_bandwidth, 100000)), freq_offset, samp_rate)
        self.fir_filter_xxx_5 = filter.fir_filter_fff(audio_decim, (firdes.low_pass(1.0,baseband_rate,20e3,40e3,firdes.WIN_HAMMING)))
        self.fir_filter_xxx_5.declare_sample_delay(0)
        self.fir_filter_xxx_3 = filter.fir_filter_fff(1, (firdes.band_pass(1.0,baseband_rate,38e3-13e3,38e3+13e3,3e3,firdes.WIN_HAMMING)))
        self.fir_filter_xxx_3.declare_sample_delay(0)
        self.fir_filter_xxx_2 = filter.fir_filter_fcc(1, (firdes.complex_band_pass(1.0,baseband_rate,19e3-500,19e3+500,1e3,firdes.WIN_HAMMING)))
        self.fir_filter_xxx_2.declare_sample_delay(0)
        self.fir_filter_xxx_1 = filter.fir_filter_fff(audio_decim, (firdes.low_pass(1.0,baseband_rate,13e3,3e3,firdes.WIN_HAMMING)))
        self.fir_filter_xxx_1.declare_sample_delay(0)
        self.digital_mpsk_receiver_cc_0 = digital.mpsk_receiver_cc(2, 0, 1*cmath.pi/100.0, -0.06, 0.06, 0.5, 0.05, samp_rate/bb_decim/audio_decim/ 2375.0, 0.001, 0.005)
        self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(2)
        self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
        self.blocks_sub_xx_0 = blocks.sub_ff(1)
        self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_float*1)
        self.blocks_multiply_xx_1 = blocks.multiply_vcc(1)
        self.blocks_multiply_xx_0 = blocks.multiply_vff(1)
        self.blocks_multiply_const_vxx_0_0 = blocks.multiply_const_vff((10**(1.*(volume+15)/10), ))
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff((10**(1.*(volume+15)/10), ))
        self.blocks_keep_one_in_n_0 = blocks.keep_one_in_n(gr.sizeof_char*1, 2)
        self.blocks_complex_to_real_0 = blocks.complex_to_real(1)
        self.blocks_complex_to_imag_0 = blocks.complex_to_imag(1)
        self.blocks_add_xx_0 = blocks.add_vff(1)
        self.analog_wfm_rcv_0 = analog.wfm_rcv(
        	quad_rate=samp_rate,
        	audio_decimation=bb_decim,
        )
        self.analog_pll_refout_cc_0 = analog.pll_refout_cc(0.001, 2 * math.pi * (19000+200) / baseband_rate, 2 * math.pi * (19000-200) / baseband_rate)
        self.analog_fm_deemph_0_0_0 = analog.fm_deemph(fs=audio_decim_rate, tau=75e-6)
        self.analog_fm_deemph_0_0 = analog.fm_deemph(fs=audio_decim_rate, tau=75e-6)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.fir_filter_xxx_1, 0), (self.wxgui_fftsink2_0_0_0, 0))
        self.connect((self.fir_filter_xxx_1, 0), (self.blocks_add_xx_0, 0))
        self.connect((self.fir_filter_xxx_3, 0), (self.wxgui_fftsink2_0_0_0_1, 0))
        self.connect((self.fir_filter_xxx_1, 0), (self.blocks_sub_xx_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0), (self.fir_filter_xxx_5, 0))
        self.connect((self.analog_fm_deemph_0_0_0, 0), (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.blocks_add_xx_0, 0), (self.analog_fm_deemph_0_0_0, 0))
        self.connect((self.blocks_sub_xx_0, 0), (self.analog_fm_deemph_0_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0), (self.wxgui_fftsink2_0_0_0_1_0_0, 0))
        self.connect((self.fir_filter_xxx_5, 0), (self.blocks_add_xx_0, 1))
        self.connect((self.fir_filter_xxx_5, 0), (self.blocks_sub_xx_0, 1))
        self.connect((self.fir_filter_xxx_3, 0), (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.rational_resampler_xxx_0, 0))
        self.connect((self.analog_fm_deemph_0_0, 0), (self.blocks_multiply_const_vxx_0_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0_0, 0), (self.rational_resampler_xxx_0_0, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.wxgui_fftsink2_0, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_0, 0), (self.analog_wfm_rcv_0, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_1, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.wxgui_waterfallsink2_0, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.wxgui_fftsink2_0_0, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_3, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.fir_filter_xxx_2, 0))
        self.connect((self.fir_filter_xxx_2, 0), (self.analog_pll_refout_cc_0, 0))
        self.connect((self.analog_pll_refout_cc_0, 0), (self.blocks_multiply_xx_1, 1))
        self.connect((self.analog_pll_refout_cc_0, 0), (self.blocks_multiply_xx_1, 0))
        self.connect((self.blocks_multiply_xx_1, 0), (self.blocks_complex_to_imag_0, 0))
        self.connect((self.blocks_complex_to_imag_0, 0), (self.wxgui_scopesink2_0, 0))
        self.connect((self.blocks_complex_to_imag_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.analog_wfm_rcv_0, 0), (self.freq_xlating_fir_filter_xxx_1, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_1, 0), (self.wxgui_fftsink2_0_0_0_1_0_1, 0))
        self.connect((self.digital_mpsk_receiver_cc_0, 0), (self.wxgui_scopesink2_1, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_1, 0), (self.root_raised_cosine_filter_0, 0))
        self.connect((self.root_raised_cosine_filter_0, 0), (self.digital_mpsk_receiver_cc_0, 0))
        self.connect((self.digital_mpsk_receiver_cc_0, 0), (self.blocks_complex_to_real_0, 0))
        self.connect((self.digital_binary_slicer_fb_0, 0), (self.blocks_keep_one_in_n_0, 0))
        self.connect((self.blocks_complex_to_real_0, 0), (self.digital_binary_slicer_fb_0, 0))
        self.connect((self.blocks_keep_one_in_n_0, 0), (self.digital_diff_decoder_bb_0, 0))
        self.connect((self.rtlsdr_source_0, 0), (self.freq_xlating_fir_filter_xxx_0, 0))
        self.connect((self.digital_diff_decoder_bb_0, 0), (self.gr_rds_decoder_0, 0))
        self.connect((self.rational_resampler_xxx_0, 0), (self.blocks_null_sink_0, 0))
        self.connect((self.rational_resampler_xxx_0_0, 0), (self.blocks_null_sink_0, 1))

        ##################################################
        # Asynch Message Connections
        ##################################################
        self.msg_connect(self.gr_rds_decoder_0, "out", self.gr_rds_parser_0, "in")
        self.msg_connect(self.gr_rds_parser_0, "out", self.gr_rds_panel_0, "in")
Example #9
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="FM Stereo Receiver")

        ##################################################
        # Variables
        ##################################################
        self.smux_filt_samprate = smux_filt_samprate = 256e3
        self.smux_decim = smux_decim = 8
        self.samp_rate = samp_rate = 2.048e6
        self.right_gain = right_gain = 3
        self.left_gain = left_gain = 3
        self.bpf_base = bpf_base = 23e3
        self.RF_Gain = RF_Gain = 45
        self.CF = CF = 99.3e6

        ##################################################
        # Blocks
        ##################################################
        self._samp_rate_text_box = forms.text_box(
        	parent=self.GetWin(),
        	value=self.samp_rate,
        	callback=self.set_samp_rate,
        	label="Sample Rate: 1.024M, 1.4M, 1.8M, 1.92M, 2.048M, 2.4M & 2. 56M",
        	converter=forms.float_converter(),
        )
        self.GridAdd(self._samp_rate_text_box, 1, 0, 1, 1)
        _right_gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._right_gain_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_right_gain_sizer,
        	value=self.right_gain,
        	callback=self.set_right_gain,
        	label="R Audio Gain",
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._right_gain_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_right_gain_sizer,
        	value=self.right_gain,
        	callback=self.set_right_gain,
        	minimum=0,
        	maximum=5,
        	num_steps=100,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.GridAdd(_right_gain_sizer, 0, 1, 1, 1)
        self.notebook_0 = self.notebook_0 = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
        self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "BB Spectrum")
        self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "Demod Spectrum")
        self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "Stereo Spectrum")
        self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0), "Stereo Signal")
        self.GridAdd(self.notebook_0, 2, 0, 1, 2)
        _left_gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._left_gain_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_left_gain_sizer,
        	value=self.left_gain,
        	callback=self.set_left_gain,
        	label="L Audio Gain",
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._left_gain_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_left_gain_sizer,
        	value=self.left_gain,
        	callback=self.set_left_gain,
        	minimum=0,
        	maximum=5,
        	num_steps=100,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.GridAdd(_left_gain_sizer, 0, 0, 1, 1)
        _RF_Gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._RF_Gain_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_RF_Gain_sizer,
        	value=self.RF_Gain,
        	callback=self.set_RF_Gain,
        	label="RF Gain",
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._RF_Gain_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_RF_Gain_sizer,
        	value=self.RF_Gain,
        	callback=self.set_RF_Gain,
        	minimum=0,
        	maximum=100,
        	num_steps=45,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.GridAdd(_RF_Gain_sizer, 1, 1, 1, 1)
        self.wxgui_waterfallsink2_0 = waterfallsink2.waterfall_sink_c(
        	self.notebook_0.GetPage(0).GetWin(),
        	baseband_freq=0,
        	dynamic_range=100,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=samp_rate,
        	fft_size=512,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="Baseband Waterfall",
        	size=(800,100),
        )
        self.notebook_0.GetPage(0).GridAdd(self.wxgui_waterfallsink2_0.win, 3, 0, 1, 2)
        self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
        	self.notebook_0.GetPage(3).GetWin(),
        	title="Scope Plot",
        	sample_rate=32e3,
        	v_scale=0,
        	v_offset=0,
        	t_scale=0,
        	ac_couple=False,
        	xy_mode=False,
        	num_inputs=2,
        	trig_mode=wxgui.TRIG_MODE_AUTO,
        	y_axis_label="Counts",
        	size=(800,500),
        )
        self.notebook_0.GetPage(3).Add(self.wxgui_scopesink2_0.win)
        self.wxgui_fftsink2_0_1 = fftsink2.fft_sink_f(
        	self.notebook_0.GetPage(2).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=32e3,
        	fft_size=1024,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="Difference FFT ",
        	peak_hold=False,
        )
        self.notebook_0.GetPage(2).Add(self.wxgui_fftsink2_0_1.win)
        self.wxgui_fftsink2_0_0_0 = fftsink2.fft_sink_f(
        	self.notebook_0.GetPage(1).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=samp_rate/8,
        	fft_size=1024,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="Demodulated FFT",
        	peak_hold=False,
        	size=(800,800),
        )
        self.notebook_0.GetPage(1).Add(self.wxgui_fftsink2_0_0_0.win)
        self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c(
        	self.notebook_0.GetPage(0).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=samp_rate,
        	fft_size=1024,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="Baseband FFT",
        	peak_hold=False,
        	size=(800,100),
        )
        self.notebook_0.GetPage(0).GridAdd(self.wxgui_fftsink2_0_0.win, 2, 0, 1, 2)
        self.wxgui_fftsink2_0 = fftsink2.fft_sink_f(
        	self.notebook_0.GetPage(2).GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=32e3,
        	fft_size=1024,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="Sum FFT",
        	peak_hold=False,
        )
        self.notebook_0.GetPage(2).Add(self.wxgui_fftsink2_0.win)
        self.rfgain = blocks.multiply_const_vcc((RF_Gain, ))
        self.low_pass_filter_1_0 = filter.fir_filter_fff(smux_decim, firdes.low_pass(
        	1, smux_filt_samprate, 15e3, 500, firdes.WIN_HAMMING, 1))
        self.low_pass_filter_0 = filter.fir_filter_ccf(2, firdes.low_pass(
        	2, samp_rate/4, 100e3, 500, firdes.WIN_KAISER, 6.76))
        self.iir_filter_xxx_0 = filter.iir_filter_ccf((-0.00266, 0.00504, -0.00309, -0.00136, 0.00663, -0.01052, 0.01103, -0.00731, 0.00016, 0.00800, -0.01396, 0.01490, -0.00971, -0.00035, 0.01173, -0.01979, 0.02054, -0.01240, -0.00273, 0.01960, -0.03122, 0.03124, -0.01669, -0.01017, 0.04137, -0.06448, 0.06476, -0.02634, -0.07449, 0.33571, -0.00000, -0.33571, 0.07449, 0.02634, -0.06476, 0.06448, -0.04137, 0.01017, 0.01669, -0.03124, 0.03122, -0.01960, 0.00273, 0.01240, -0.02054, 0.01979, -0.01173, 0.00035, 0.00971, -0.01490, 0.01396, -0.00800, -0.00016, 0.00731, -0.01103, 0.01052, -0.00663, 0.00136, 0.00309, -0.00504, 0.00266
        ), (1 , ), False)
        self.fir_filter_xxx_0_0 = filter.fir_filter_ccf(4, (1,1,1,1))
        self.fir_filter_xxx_0_0.declare_sample_delay(0)
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
        self.blocks_sub_xx_0 = blocks.sub_ff(1)
        self.blocks_multiply_xx_1_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_xx_0 = blocks.multiply_vff(1)
        self.blocks_multiply_const_vxx_0_0 = blocks.multiply_const_vff((right_gain, ))
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff((left_gain, ))
        self.blocks_multiply_conjugate_cc_0 = blocks.multiply_conjugate_cc(1)
        self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
        self.blocks_file_source_0_0 = blocks.file_source(gr.sizeof_gr_complex*1, "/Users/bretttt/iCloud_drive/16S/engs110/project/radio_dat/IQ_Data_STEREO1", True)
        self.blocks_divide_xx_1 = blocks.divide_cc(1)
        self.blocks_delay_2 = blocks.delay(gr.sizeof_gr_complex*1, 30)
        self.blocks_complex_to_real_0 = blocks.complex_to_real(1)
        self.blocks_complex_to_mag_0 = blocks.complex_to_mag(1)
        self.blocks_complex_to_imag_0 = blocks.complex_to_imag(1)
        self.blocks_add_xx_0 = blocks.add_vff(1)
        self.blocks_add_const_vxx_0 = blocks.add_const_vcc((0.1, ))
        self.baseband_LPF = filter.fir_filter_fff(smux_decim, firdes.low_pass(
        	1, smux_filt_samprate, 15e3, 500, firdes.WIN_KAISER, 6.76))
        self.band_pass_filter_0_0_0 = filter.fir_filter_fcc(1, firdes.complex_band_pass(
        	1, smux_filt_samprate, 18000, 20000, 1000, firdes.WIN_KAISER, 1))
        self.band_pass_filter_0 = filter.fir_filter_fff(1, firdes.band_pass(
        	1, smux_filt_samprate, bpf_base, bpf_base+30e3, 500, firdes.WIN_KAISER, 6.76))
        self.audio_sink_0_0_0_0 = audio.sink(32000, "", True)
        self.analog_pll_refout_cc_0_0 = analog.pll_refout_cc(3.14/100, 0.152*3.14, 0.144*3.14)
        self.analog_fm_deemph_0_0 = analog.fm_deemph(fs=samp_rate/8, tau=75e-6)
        self.analog_fm_deemph_0 = analog.fm_deemph(fs=samp_rate/8, tau=75e-6)
        self.analog_const_source_x_0 = analog.sig_source_f(0, analog.GR_CONST_WAVE, 0, 0, 0)
        _CF_sizer = wx.BoxSizer(wx.VERTICAL)
        self._CF_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_CF_sizer,
        	value=self.CF,
        	callback=self.set_CF,
        	label="Center Frequency",
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._CF_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_CF_sizer,
        	value=self.CF,
        	callback=self.set_CF,
        	minimum=80e6,
        	maximum=108e6,
        	num_steps=280,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.GridAdd(_CF_sizer, 3, 0, 1, 2)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.analog_const_source_x_0, 0), (self.blocks_float_to_complex_0, 1))    
        self.connect((self.analog_fm_deemph_0, 0), (self.audio_sink_0_0_0_0, 0))    
        self.connect((self.analog_fm_deemph_0_0, 0), (self.audio_sink_0_0_0_0, 1))    
        self.connect((self.analog_pll_refout_cc_0_0, 0), (self.blocks_multiply_xx_1_0, 0))    
        self.connect((self.analog_pll_refout_cc_0_0, 0), (self.blocks_multiply_xx_1_0, 1))    
        self.connect((self.band_pass_filter_0, 0), (self.blocks_multiply_xx_0, 0))    
        self.connect((self.band_pass_filter_0_0_0, 0), (self.analog_pll_refout_cc_0_0, 0))    
        self.connect((self.baseband_LPF, 0), (self.blocks_add_xx_0, 0))    
        self.connect((self.baseband_LPF, 0), (self.blocks_sub_xx_0, 0))    
        self.connect((self.blocks_add_const_vxx_0, 0), (self.blocks_divide_xx_1, 1))    
        self.connect((self.blocks_add_xx_0, 0), (self.blocks_multiply_const_vxx_0, 0))    
        self.connect((self.blocks_complex_to_imag_0, 0), (self.band_pass_filter_0, 0))    
        self.connect((self.blocks_complex_to_imag_0, 0), (self.band_pass_filter_0_0_0, 0))    
        self.connect((self.blocks_complex_to_imag_0, 0), (self.baseband_LPF, 0))    
        self.connect((self.blocks_complex_to_imag_0, 0), (self.wxgui_fftsink2_0_0_0, 0))    
        self.connect((self.blocks_complex_to_mag_0, 0), (self.blocks_float_to_complex_0, 0))    
        self.connect((self.blocks_complex_to_real_0, 0), (self.blocks_multiply_xx_0, 1))    
        self.connect((self.blocks_delay_2, 0), (self.blocks_multiply_conjugate_cc_0, 1))    
        self.connect((self.blocks_divide_xx_1, 0), (self.blocks_delay_2, 0))    
        self.connect((self.blocks_divide_xx_1, 0), (self.iir_filter_xxx_0, 0))    
        self.connect((self.blocks_file_source_0_0, 0), (self.rfgain, 0))    
        self.connect((self.blocks_float_to_complex_0, 0), (self.blocks_add_const_vxx_0, 0))    
        self.connect((self.blocks_multiply_conjugate_cc_0, 0), (self.blocks_complex_to_imag_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.analog_fm_deemph_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.wxgui_fftsink2_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.wxgui_scopesink2_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_0_0, 0), (self.analog_fm_deemph_0_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_0_0, 0), (self.wxgui_fftsink2_0_1, 0))    
        self.connect((self.blocks_multiply_const_vxx_0_0, 0), (self.wxgui_scopesink2_0, 1))    
        self.connect((self.blocks_multiply_xx_0, 0), (self.low_pass_filter_1_0, 0))    
        self.connect((self.blocks_multiply_xx_1_0, 0), (self.blocks_complex_to_real_0, 0))    
        self.connect((self.blocks_sub_xx_0, 0), (self.blocks_multiply_const_vxx_0_0, 0))    
        self.connect((self.blocks_throttle_0, 0), (self.fir_filter_xxx_0_0, 0))    
        self.connect((self.blocks_throttle_0, 0), (self.wxgui_fftsink2_0_0, 0))    
        self.connect((self.blocks_throttle_0, 0), (self.wxgui_waterfallsink2_0, 0))    
        self.connect((self.fir_filter_xxx_0_0, 0), (self.low_pass_filter_0, 0))    
        self.connect((self.iir_filter_xxx_0, 0), (self.blocks_multiply_conjugate_cc_0, 0))    
        self.connect((self.low_pass_filter_0, 0), (self.blocks_complex_to_mag_0, 0))    
        self.connect((self.low_pass_filter_0, 0), (self.blocks_divide_xx_1, 0))    
        self.connect((self.low_pass_filter_1_0, 0), (self.blocks_add_xx_0, 1))    
        self.connect((self.low_pass_filter_1_0, 0), (self.blocks_sub_xx_0, 1))    
        self.connect((self.rfgain, 0), (self.blocks_throttle_0, 0))    
Example #10
0
    def connect_audio_stage(self, input_port):
        stereo_rate = self.demod_rate
        normalizer = TWO_PI / stereo_rate
        pilot_tone = 19000
        pilot_low = pilot_tone * 0.98
        pilot_high = pilot_tone * 1.02

        def make_audio_filter():
            return grfilter.fir_filter_fff(
                stereo_rate // self.__audio_int_rate,  # decimation
                firdes.low_pass(
                    1.0,
                    stereo_rate,
                    15000,
                    5000,
                    firdes.WIN_HAMMING))

        stereo_pilot_filter = grfilter.fir_filter_fcc(
            1,  # decimation
            firdes.complex_band_pass(
                1.0,
                stereo_rate,
                pilot_low,
                pilot_high,
                300))  # TODO magic number from gqrx
        stereo_pilot_pll = analog.pll_refout_cc(
            loop_bw=0.001,
            max_freq=normalizer * pilot_high,
            min_freq=normalizer * pilot_low)
        stereo_pilot_doubler = blocks.multiply_cc()
        stereo_pilot_out = blocks.complex_to_real()
        difference_channel_mixer = blocks.multiply_ff()
        difference_channel_filter = make_audio_filter()
        mono_channel_filter = make_audio_filter()
        mixL = blocks.add_ff(1)
        mixR = blocks.sub_ff(1)
        
        # connections
        self.connect(input_port, mono_channel_filter)
        if self.__decode_stereo:
            # stereo pilot tone tracker
            self.connect(
                input_port,
                stereo_pilot_filter,
                stereo_pilot_pll)
            self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 0))
            self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 1))
            self.connect(stereo_pilot_doubler, stereo_pilot_out)
        
            # pick out stereo left-right difference channel (at stereo_rate)
            self.connect(input_port, (difference_channel_mixer, 0))
            self.connect(stereo_pilot_out, (difference_channel_mixer, 1))
            self.connect(
                difference_channel_mixer,
                blocks.multiply_const_ff(6),  # TODO: Completely empirical fudge factor. This should not be necessary. I believe this is at least partly due to phase error in the pilot signal.
                difference_channel_filter)
        
            # recover left/right channels (at self.__audio_int_rate)
            self.connect(difference_channel_filter, (mixL, 1))
            self.connect(difference_channel_filter, (mixR, 1))
            self.connect(mono_channel_filter, (mixL, 0))
            self.connect(mono_channel_filter, (mixR, 0))
            resamplerL = self._make_resampler((mixL, 0), self.__audio_int_rate)
            resamplerR = self._make_resampler((mixR, 0), self.__audio_int_rate)
            deemphL = fm_emph.fm_deemph(self.__audio_int_rate, 75e-6)
            deemphR = fm_emph.fm_deemph(self.__audio_int_rate, 75e-6)
            self.connect(resamplerL, deemphL)
            self.connect(resamplerR, deemphR)
            self.connect_audio_output(deemphL, deemphR)
        else:
            resampler = self._make_resampler(mono_channel_filter, self.__audio_int_rate)
            deemph = fm_emph.fm_deemph(self.__audio_int_rate, 75e-6)
            self.connect(resampler, deemph)
            self.connect_audio_output(deemph, deemph)
Example #11
0
    def __init__(self):
        gr.top_block.__init__(self, "Am Dsb")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Am Dsb")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "am_dsb")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 50e3
        self.bw = bw = 5e3

        ##################################################
        # Blocks
        ##################################################
        self._bw_range = Range(5e3, 25e3, 1e3, 5e3, 200)
        self._bw_win = RangeWidget(self._bw_range, self.set_bw, 'Bandwidth',
                                   "counter_slider", float)
        self.top_grid_layout.addWidget(self._bw_win, 0, 0, 1, 1)
        for r in range(0, 1):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 1):
            self.top_grid_layout.setColumnStretch(c, 1)
        self.qtgui_waterfall_sink_x_0 = qtgui.waterfall_sink_c(
            1024,  #size
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "",  #name
            1  #number of inputs
        )
        self.qtgui_waterfall_sink_x_0.set_update_time(0.01)
        self.qtgui_waterfall_sink_x_0.enable_grid(False)
        self.qtgui_waterfall_sink_x_0.enable_axis_labels(True)

        if not True:
            self.qtgui_waterfall_sink_x_0.disable_legend()

        if "complex" == "float" or "complex" == "msg_float":
            self.qtgui_waterfall_sink_x_0.set_plot_pos_half(not True)

        labels = ['', '', '', '', '', '', '', '', '', '']
        colors = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_waterfall_sink_x_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_waterfall_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_waterfall_sink_x_0.set_color_map(i, colors[i])
            self.qtgui_waterfall_sink_x_0.set_line_alpha(i, alphas[i])

        self.qtgui_waterfall_sink_x_0.set_intensity_range(-140, 10)

        self._qtgui_waterfall_sink_x_0_win = sip.wrapinstance(
            self.qtgui_waterfall_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_waterfall_sink_x_0_win, 3,
                                       1, 1, 1)
        for r in range(3, 4):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(1, 2):
            self.top_grid_layout.setColumnStretch(c, 1)
        self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c(
            1024,  #size
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "",  #name
            2  #number of inputs
        )
        self.qtgui_freq_sink_x_0.set_update_time(0.01)
        self.qtgui_freq_sink_x_0.set_y_axis(-140, 10)
        self.qtgui_freq_sink_x_0.set_y_label('Relative Gain', 'dB')
        self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0,
                                                  "")
        self.qtgui_freq_sink_x_0.enable_autoscale(False)
        self.qtgui_freq_sink_x_0.enable_grid(False)
        self.qtgui_freq_sink_x_0.set_fft_average(0.1)
        self.qtgui_freq_sink_x_0.enable_axis_labels(True)
        self.qtgui_freq_sink_x_0.enable_control_panel(False)

        if not True:
            self.qtgui_freq_sink_x_0.disable_legend()

        if "complex" == "float" or "complex" == "msg_float":
            self.qtgui_freq_sink_x_0.set_plot_pos_half(not True)

        labels = ['Audio', 'AM DSB', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "dark blue"
        ]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(2):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_freq_sink_x_0_win = sip.wrapinstance(
            self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_win, 3, 0, 1,
                                       1)
        for r in range(3, 4):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 1):
            self.top_grid_layout.setColumnStretch(c, 1)
        self.fir_filter_xxx_0 = filter.fir_filter_fcc(
            1, (firdes.low_pass_2(1, samp_rate, bw, 1e3, 50)))
        self.fir_filter_xxx_0.declare_sample_delay(0)
        self.blocks_wavfile_source_0 = blocks.wavfile_source(
            '/home/prabhat/Downloads/Untitled folder/PIERS project/fm tx rx/Charlie Puth - Attention Official Video (1).wav',
            True)
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_float * 1,
                                                 samp_rate, True)
        self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
        self.blocks_add_const_vxx_0 = blocks.add_const_vff((1, ))

        ##################################################
        # Connections
        ##################################################
        self.connect((self.blocks_add_const_vxx_0, 0),
                     (self.fir_filter_xxx_0, 0))
        self.connect((self.blocks_float_to_complex_0, 0),
                     (self.qtgui_freq_sink_x_0, 0))
        self.connect((self.blocks_throttle_0, 0),
                     (self.blocks_add_const_vxx_0, 0))
        self.connect((self.blocks_throttle_0, 0),
                     (self.blocks_float_to_complex_0, 0))
        self.connect((self.blocks_wavfile_source_0, 0),
                     (self.blocks_throttle_0, 0))
        self.connect((self.fir_filter_xxx_0, 0), (self.qtgui_freq_sink_x_0, 1))
        self.connect((self.fir_filter_xxx_0, 0),
                     (self.qtgui_waterfall_sink_x_0, 0))
Example #12
0
    def __init__(self):
        gr.top_block.__init__(self, "Stereo Fm")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Stereo Fm")
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme("gnuradio-grc"))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "stereo_fm")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.demod_rate = demod_rate = 192000
        self.audio_decimation = audio_decimation = 4
        self.audio_rate = audio_rate = demod_rate / audio_decimation
        self.width_of_transition_band = width_of_transition_band = audio_rate / 32
        self.volume = volume = 1
        self.stereo_carr_loop_bw = stereo_carr_loop_bw = 2.0 * math.pi * 10 / 100
        self.samp_rate = samp_rate = 1000e3
        self.range1 = range1 = 88.1
        self.max_freq = max_freq = 2.0 * math.pi * (80) * 1e3 / demod_rate
        self.loop_bw = loop_bw = 2.0 * math.pi * 28 / 100

        ##################################################
        # Blocks
        ##################################################
        self._range1_layout = Qt.QVBoxLayout()
        self._range1_tool_bar = Qt.QToolBar(self)
        self._range1_layout.addWidget(self._range1_tool_bar)
        self._range1_tool_bar.addWidget(Qt.QLabel("Tune" + ": "))

        class qwt_counter_pyslot(Qwt.QwtCounter):
            def __init__(self, parent=None):
                Qwt.QwtCounter.__init__(self, parent)

            @pyqtSlot("double")
            def setValue(self, value):
                super(Qwt.QwtCounter, self).setValue(value)

        self._range1_counter = qwt_counter_pyslot()
        self._range1_counter.setRange(88, 108, 0.1)
        self._range1_counter.setNumButtons(2)
        self._range1_counter.setValue(self.range1)
        self._range1_tool_bar.addWidget(self._range1_counter)
        self._range1_counter.valueChanged.connect(self.set_range1)
        self._range1_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal, Qwt.QwtSlider.BottomScale, Qwt.QwtSlider.BgSlot)
        self._range1_slider.setRange(88, 108, 0.1)
        self._range1_slider.setValue(self.range1)
        self._range1_slider.setMinimumWidth(200)
        self._range1_slider.valueChanged.connect(self.set_range1)
        self._range1_layout.addWidget(self._range1_slider)
        self.top_layout.addLayout(self._range1_layout)
        self._volume_layout = Qt.QVBoxLayout()
        self._volume_tool_bar = Qt.QToolBar(self)
        self._volume_layout.addWidget(self._volume_tool_bar)
        self._volume_tool_bar.addWidget(Qt.QLabel("Volume" + ": "))

        class qwt_counter_pyslot(Qwt.QwtCounter):
            def __init__(self, parent=None):
                Qwt.QwtCounter.__init__(self, parent)

            @pyqtSlot("double")
            def setValue(self, value):
                super(Qwt.QwtCounter, self).setValue(value)

        self._volume_counter = qwt_counter_pyslot()
        self._volume_counter.setRange(0.000001, 100, 0.01)
        self._volume_counter.setNumButtons(2)
        self._volume_counter.setValue(self.volume)
        self._volume_tool_bar.addWidget(self._volume_counter)
        self._volume_counter.valueChanged.connect(self.set_volume)
        self._volume_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal, Qwt.QwtSlider.BottomScale, Qwt.QwtSlider.BgSlot)
        self._volume_slider.setRange(0.000001, 100, 0.01)
        self._volume_slider.setValue(self.volume)
        self._volume_slider.setMinimumWidth(200)
        self._volume_slider.valueChanged.connect(self.set_volume)
        self._volume_layout.addWidget(self._volume_slider)
        self.top_layout.addLayout(self._volume_layout)
        self.stereo_carrier_pll_recovery = analog.pll_refout_cc(
            stereo_carr_loop_bw, -2.0 * math.pi * 18990 / demod_rate, -2.0 * math.pi * 19010 / demod_rate
        )
        self.stereo_carrier__filter = filter.fir_filter_fcc(
            1,
            firdes.complex_band_pass(1, demod_rate, -19020, -18980, width_of_transition_band, firdes.WIN_HAMMING, 6.76),
        )
        self.stereo_carr_gen = blocks.multiply_vcc(1)
        self.rtl2832_source_0 = baz.rtl_source_c(defer_creation=True, output_size=gr.sizeof_gr_complex)
        self.rtl2832_source_0.set_verbose(True)
        self.rtl2832_source_0.set_vid(0x0)
        self.rtl2832_source_0.set_pid(0x0)
        self.rtl2832_source_0.set_tuner_name("")
        self.rtl2832_source_0.set_default_timeout(0)
        self.rtl2832_source_0.set_use_buffer(True)
        self.rtl2832_source_0.set_fir_coefficients(([]))

        self.rtl2832_source_0.set_read_length(0)

        if self.rtl2832_source_0.create() == False:
            raise Exception("Failed to create RTL2832 Source: rtl2832_source_0")

        self.rtl2832_source_0.set_sample_rate(samp_rate)

        self.rtl2832_source_0.set_frequency(range1 * 1e6)

        self.rtl2832_source_0.set_auto_gain_mode(True)
        self.rtl2832_source_0.set_relative_gain(True)
        self.rtl2832_source_0.set_gain(1)

        self.root_raised_cosine_filter_0 = filter.fir_filter_ccf(
            1, firdes.root_raised_cosine(1, 192000, 2375 / 2, 0.4, 100)
        )
        self.rational_resampler_xxx_0_0 = filter.rational_resampler_ccc(
            interpolation=demod_rate, decimation=int(samp_rate), taps=None, fractional_bw=None
        )
        self.qtgui_const_sink_x_1 = qtgui.const_sink_c(1024, "", 1)  # size  # name  # number of inputs
        self.qtgui_const_sink_x_1.set_update_time(0.10)
        self.qtgui_const_sink_x_1.set_y_axis(-2, 2)
        self.qtgui_const_sink_x_1.set_x_axis(-2, 2)
        self.qtgui_const_sink_x_1.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, "")
        self.qtgui_const_sink_x_1.enable_autoscale(True)
        self.qtgui_const_sink_x_1.enable_grid(True)

        labels = ["", "", "", "", "", "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = ["blue", "red", "red", "red", "red", "red", "red", "red", "red", "red"]
        styles = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        markers = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_const_sink_x_1.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_const_sink_x_1.set_line_label(i, labels[i])
            self.qtgui_const_sink_x_1.set_line_width(i, widths[i])
            self.qtgui_const_sink_x_1.set_line_color(i, colors[i])
            self.qtgui_const_sink_x_1.set_line_style(i, styles[i])
            self.qtgui_const_sink_x_1.set_line_marker(i, markers[i])
            self.qtgui_const_sink_x_1.set_line_alpha(i, alphas[i])

        self._qtgui_const_sink_x_1_win = sip.wrapinstance(self.qtgui_const_sink_x_1.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_const_sink_x_1_win)
        self.fm_demod = analog.pll_freqdet_cf(loop_bw, max_freq, -max_freq)
        self.digital_mpsk_receiver_cc_0 = digital.mpsk_receiver_cc(
            2, 0, 1 * cmath.pi / 100.0, -0.06, 0.06, 0.5, 0.05, demod_rate / 2375.0, 0.001, 0.005
        )
        self.RDS_signal_gen = blocks.multiply_vcc(1)
        self.RDS_sig_filter = filter.fir_filter_fcc(
            1,
            firdes.complex_band_pass(
                1, demod_rate, 57000 - 1500, 57000 + 1500, width_of_transition_band, firdes.WIN_HAMMING, 6.76
            ),
        )
        self.RDS_carr_gen = blocks.multiply_vcc(1)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.RDS_carr_gen, 0), (self.RDS_signal_gen, 0))
        self.connect((self.RDS_sig_filter, 0), (self.RDS_signal_gen, 1))
        self.connect((self.RDS_signal_gen, 0), (self.root_raised_cosine_filter_0, 0))
        self.connect((self.digital_mpsk_receiver_cc_0, 0), (self.qtgui_const_sink_x_1, 0))
        self.connect((self.fm_demod, 0), (self.RDS_sig_filter, 0))
        self.connect((self.fm_demod, 0), (self.stereo_carrier__filter, 0))
        self.connect((self.rational_resampler_xxx_0_0, 0), (self.fm_demod, 0))
        self.connect((self.root_raised_cosine_filter_0, 0), (self.digital_mpsk_receiver_cc_0, 0))
        self.connect((self.rtl2832_source_0, 0), (self.rational_resampler_xxx_0_0, 0))
        self.connect((self.stereo_carr_gen, 0), (self.RDS_carr_gen, 1))
        self.connect((self.stereo_carrier__filter, 0), (self.stereo_carrier_pll_recovery, 0))
        self.connect((self.stereo_carrier_pll_recovery, 0), (self.RDS_carr_gen, 0))
        self.connect((self.stereo_carrier_pll_recovery, 0), (self.stereo_carr_gen, 1))
        self.connect((self.stereo_carrier_pll_recovery, 0), (self.stereo_carr_gen, 0))
Example #13
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="FM Stereo Receiver")

        ##################################################
        # Variables
        ##################################################
        self.smux_filt_samprate = smux_filt_samprate = 256e3
        self.smux_decim = smux_decim = 8
        self.samp_rate = samp_rate = 2.048e6
        self.right_gain = right_gain = 3
        self.left_gain = left_gain = 3
        self.bpf_base = bpf_base = 23e3
        self.RF_Gain = RF_Gain = 45
        self.CF = CF = 99.3e6

        ##################################################
        # Blocks
        ##################################################
        self._samp_rate_text_box = forms.text_box(
            parent=self.GetWin(),
            value=self.samp_rate,
            callback=self.set_samp_rate,
            label=
            "Sample Rate: 1.024M, 1.4M, 1.8M, 1.92M, 2.048M, 2.4M & 2. 56M",
            converter=forms.float_converter(),
        )
        self.GridAdd(self._samp_rate_text_box, 1, 0, 1, 1)
        _right_gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._right_gain_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_right_gain_sizer,
            value=self.right_gain,
            callback=self.set_right_gain,
            label="R Audio Gain",
            converter=forms.float_converter(),
            proportion=0,
        )
        self._right_gain_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_right_gain_sizer,
            value=self.right_gain,
            callback=self.set_right_gain,
            minimum=0,
            maximum=5,
            num_steps=100,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_right_gain_sizer, 0, 1, 1, 1)
        self.notebook_0 = self.notebook_0 = wx.Notebook(self.GetWin(),
                                                        style=wx.NB_TOP)
        self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
                                "BB Spectrum")
        self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
                                "Demod Spectrum")
        self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
                                "Stereo Spectrum")
        self.notebook_0.AddPage(grc_wxgui.Panel(self.notebook_0),
                                "Stereo Signal")
        self.GridAdd(self.notebook_0, 2, 0, 1, 2)
        _left_gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._left_gain_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_left_gain_sizer,
            value=self.left_gain,
            callback=self.set_left_gain,
            label="L Audio Gain",
            converter=forms.float_converter(),
            proportion=0,
        )
        self._left_gain_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_left_gain_sizer,
            value=self.left_gain,
            callback=self.set_left_gain,
            minimum=0,
            maximum=5,
            num_steps=100,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_left_gain_sizer, 0, 0, 1, 1)
        _RF_Gain_sizer = wx.BoxSizer(wx.VERTICAL)
        self._RF_Gain_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_RF_Gain_sizer,
            value=self.RF_Gain,
            callback=self.set_RF_Gain,
            label="RF Gain",
            converter=forms.float_converter(),
            proportion=0,
        )
        self._RF_Gain_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_RF_Gain_sizer,
            value=self.RF_Gain,
            callback=self.set_RF_Gain,
            minimum=0,
            maximum=100,
            num_steps=45,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_RF_Gain_sizer, 1, 1, 1, 1)
        self.wxgui_waterfallsink2_0 = waterfallsink2.waterfall_sink_c(
            self.notebook_0.GetPage(0).GetWin(),
            baseband_freq=0,
            dynamic_range=100,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=samp_rate,
            fft_size=512,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title="Baseband Waterfall",
            size=(800, 100),
        )
        self.notebook_0.GetPage(0).GridAdd(self.wxgui_waterfallsink2_0.win, 3,
                                           0, 1, 2)
        self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
            self.notebook_0.GetPage(3).GetWin(),
            title="Scope Plot",
            sample_rate=32e3,
            v_scale=0,
            v_offset=0,
            t_scale=0,
            ac_couple=False,
            xy_mode=False,
            num_inputs=2,
            trig_mode=wxgui.TRIG_MODE_AUTO,
            y_axis_label="Counts",
            size=(800, 500),
        )
        self.notebook_0.GetPage(3).Add(self.wxgui_scopesink2_0.win)
        self.wxgui_fftsink2_0_1 = fftsink2.fft_sink_f(
            self.notebook_0.GetPage(2).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=32e3,
            fft_size=1024,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title="Difference FFT ",
            peak_hold=False,
        )
        self.notebook_0.GetPage(2).Add(self.wxgui_fftsink2_0_1.win)
        self.wxgui_fftsink2_0_0_0 = fftsink2.fft_sink_f(
            self.notebook_0.GetPage(1).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=samp_rate / 8,
            fft_size=1024,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title="Demodulated FFT",
            peak_hold=False,
            size=(800, 800),
        )
        self.notebook_0.GetPage(1).Add(self.wxgui_fftsink2_0_0_0.win)
        self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c(
            self.notebook_0.GetPage(0).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=samp_rate,
            fft_size=1024,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title="Baseband FFT",
            peak_hold=False,
            size=(800, 100),
        )
        self.notebook_0.GetPage(0).GridAdd(self.wxgui_fftsink2_0_0.win, 2, 0,
                                           1, 2)
        self.wxgui_fftsink2_0 = fftsink2.fft_sink_f(
            self.notebook_0.GetPage(2).GetWin(),
            baseband_freq=0,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=32e3,
            fft_size=1024,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title="Sum FFT",
            peak_hold=False,
        )
        self.notebook_0.GetPage(2).Add(self.wxgui_fftsink2_0.win)
        self.rfgain = blocks.multiply_const_vcc((RF_Gain, ))
        self.low_pass_filter_1_0 = filter.fir_filter_fff(
            smux_decim,
            firdes.low_pass(1, smux_filt_samprate, 15e3, 500,
                            firdes.WIN_HAMMING, 1))
        self.low_pass_filter_0 = filter.fir_filter_ccf(
            2,
            firdes.low_pass(2, samp_rate / 4, 100e3, 500, firdes.WIN_KAISER,
                            6.76))
        self.iir_filter_xxx_0 = filter.iir_filter_ccf(
            (-0.00266, 0.00504, -0.00309, -0.00136, 0.00663, -0.01052, 0.01103,
             -0.00731, 0.00016, 0.00800, -0.01396, 0.01490, -0.00971, -0.00035,
             0.01173, -0.01979, 0.02054, -0.01240, -0.00273, 0.01960, -0.03122,
             0.03124, -0.01669, -0.01017, 0.04137, -0.06448, 0.06476, -0.02634,
             -0.07449, 0.33571, -0.00000, -0.33571, 0.07449, 0.02634, -0.06476,
             0.06448, -0.04137, 0.01017, 0.01669, -0.03124, 0.03122, -0.01960,
             0.00273, 0.01240, -0.02054, 0.01979, -0.01173, 0.00035, 0.00971,
             -0.01490, 0.01396, -0.00800, -0.00016, 0.00731, -0.01103, 0.01052,
             -0.00663, 0.00136, 0.00309, -0.00504, 0.00266), (1, ), False)
        self.fir_filter_xxx_0_0 = filter.fir_filter_ccf(4, (1, 1, 1, 1))
        self.fir_filter_xxx_0_0.declare_sample_delay(0)
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex * 1,
                                                 samp_rate, True)
        self.blocks_sub_xx_0 = blocks.sub_ff(1)
        self.blocks_multiply_xx_1_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_xx_0 = blocks.multiply_vff(1)
        self.blocks_multiply_const_vxx_0_0 = blocks.multiply_const_vff(
            (right_gain, ))
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff(
            (left_gain, ))
        self.blocks_multiply_conjugate_cc_0 = blocks.multiply_conjugate_cc(1)
        self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
        self.blocks_file_source_0_0 = blocks.file_source(
            gr.sizeof_gr_complex * 1,
            "/Users/bretttt/iCloud_drive/16S/engs110/project/radio_dat/IQ_Data_STEREO1",
            True)
        self.blocks_divide_xx_1 = blocks.divide_cc(1)
        self.blocks_delay_2 = blocks.delay(gr.sizeof_gr_complex * 1, 30)
        self.blocks_complex_to_real_0 = blocks.complex_to_real(1)
        self.blocks_complex_to_mag_0 = blocks.complex_to_mag(1)
        self.blocks_complex_to_imag_0 = blocks.complex_to_imag(1)
        self.blocks_add_xx_0 = blocks.add_vff(1)
        self.blocks_add_const_vxx_0 = blocks.add_const_vcc((0.1, ))
        self.baseband_LPF = filter.fir_filter_fff(
            smux_decim,
            firdes.low_pass(1, smux_filt_samprate, 15e3, 500,
                            firdes.WIN_KAISER, 6.76))
        self.band_pass_filter_0_0_0 = filter.fir_filter_fcc(
            1,
            firdes.complex_band_pass(1, smux_filt_samprate, 18000, 20000, 1000,
                                     firdes.WIN_KAISER, 1))
        self.band_pass_filter_0 = filter.fir_filter_fff(
            1,
            firdes.band_pass(1, smux_filt_samprate, bpf_base, bpf_base + 30e3,
                             500, firdes.WIN_KAISER, 6.76))
        self.audio_sink_0_0_0_0 = audio.sink(32000, "", True)
        self.analog_pll_refout_cc_0_0 = analog.pll_refout_cc(
            3.14 / 100, 0.152 * 3.14, 0.144 * 3.14)
        self.analog_fm_deemph_0_0 = analog.fm_deemph(fs=samp_rate / 8,
                                                     tau=75e-6)
        self.analog_fm_deemph_0 = analog.fm_deemph(fs=samp_rate / 8, tau=75e-6)
        self.analog_const_source_x_0 = analog.sig_source_f(
            0, analog.GR_CONST_WAVE, 0, 0, 0)
        _CF_sizer = wx.BoxSizer(wx.VERTICAL)
        self._CF_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_CF_sizer,
            value=self.CF,
            callback=self.set_CF,
            label="Center Frequency",
            converter=forms.float_converter(),
            proportion=0,
        )
        self._CF_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_CF_sizer,
            value=self.CF,
            callback=self.set_CF,
            minimum=80e6,
            maximum=108e6,
            num_steps=280,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_CF_sizer, 3, 0, 1, 2)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.analog_const_source_x_0, 0),
                     (self.blocks_float_to_complex_0, 1))
        self.connect((self.analog_fm_deemph_0, 0),
                     (self.audio_sink_0_0_0_0, 0))
        self.connect((self.analog_fm_deemph_0_0, 0),
                     (self.audio_sink_0_0_0_0, 1))
        self.connect((self.analog_pll_refout_cc_0_0, 0),
                     (self.blocks_multiply_xx_1_0, 0))
        self.connect((self.analog_pll_refout_cc_0_0, 0),
                     (self.blocks_multiply_xx_1_0, 1))
        self.connect((self.band_pass_filter_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.band_pass_filter_0_0_0, 0),
                     (self.analog_pll_refout_cc_0_0, 0))
        self.connect((self.baseband_LPF, 0), (self.blocks_add_xx_0, 0))
        self.connect((self.baseband_LPF, 0), (self.blocks_sub_xx_0, 0))
        self.connect((self.blocks_add_const_vxx_0, 0),
                     (self.blocks_divide_xx_1, 1))
        self.connect((self.blocks_add_xx_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.blocks_complex_to_imag_0, 0),
                     (self.band_pass_filter_0, 0))
        self.connect((self.blocks_complex_to_imag_0, 0),
                     (self.band_pass_filter_0_0_0, 0))
        self.connect((self.blocks_complex_to_imag_0, 0),
                     (self.baseband_LPF, 0))
        self.connect((self.blocks_complex_to_imag_0, 0),
                     (self.wxgui_fftsink2_0_0_0, 0))
        self.connect((self.blocks_complex_to_mag_0, 0),
                     (self.blocks_float_to_complex_0, 0))
        self.connect((self.blocks_complex_to_real_0, 0),
                     (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_delay_2, 0),
                     (self.blocks_multiply_conjugate_cc_0, 1))
        self.connect((self.blocks_divide_xx_1, 0), (self.blocks_delay_2, 0))
        self.connect((self.blocks_divide_xx_1, 0), (self.iir_filter_xxx_0, 0))
        self.connect((self.blocks_file_source_0_0, 0), (self.rfgain, 0))
        self.connect((self.blocks_float_to_complex_0, 0),
                     (self.blocks_add_const_vxx_0, 0))
        self.connect((self.blocks_multiply_conjugate_cc_0, 0),
                     (self.blocks_complex_to_imag_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.analog_fm_deemph_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.wxgui_fftsink2_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.wxgui_scopesink2_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0_0, 0),
                     (self.analog_fm_deemph_0_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0_0, 0),
                     (self.wxgui_fftsink2_0_1, 0))
        self.connect((self.blocks_multiply_const_vxx_0_0, 0),
                     (self.wxgui_scopesink2_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.low_pass_filter_1_0, 0))
        self.connect((self.blocks_multiply_xx_1_0, 0),
                     (self.blocks_complex_to_real_0, 0))
        self.connect((self.blocks_sub_xx_0, 0),
                     (self.blocks_multiply_const_vxx_0_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.fir_filter_xxx_0_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.wxgui_fftsink2_0_0, 0))
        self.connect((self.blocks_throttle_0, 0),
                     (self.wxgui_waterfallsink2_0, 0))
        self.connect((self.fir_filter_xxx_0_0, 0), (self.low_pass_filter_0, 0))
        self.connect((self.iir_filter_xxx_0, 0),
                     (self.blocks_multiply_conjugate_cc_0, 0))
        self.connect((self.low_pass_filter_0, 0),
                     (self.blocks_complex_to_mag_0, 0))
        self.connect((self.low_pass_filter_0, 0), (self.blocks_divide_xx_1, 0))
        self.connect((self.low_pass_filter_1_0, 0), (self.blocks_add_xx_0, 1))
        self.connect((self.low_pass_filter_1_0, 0), (self.blocks_sub_xx_0, 1))
        self.connect((self.rfgain, 0), (self.blocks_throttle_0, 0))
Example #14
0
    def __init__(self):
        gr.top_block.__init__(self, "FM Radio")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("FM Radio")
        try:
             self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
             pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "fm_radio")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.valid_gains = valid_gains = [0.0, 0.9, 1.4, 2.7, 3.7, 7.7, 8.7, 12.5, 14.4, 15.7, 16.6, 19.7, 20.7, 22.9, 25.4, 28.0, 29.7, 32.8, 33.8, 36.4, 37.2, 38.6, 40.2, 42.1, 43.4, 43.9, 44.5, 48.0, 49.6]
        self.samp_rate = samp_rate = 2.048e6
        self.baseband_decimation = baseband_decimation = 10
        self.rf_gain = rf_gain = len(valid_gains)-1
        self.rds_dec = rds_dec = 10
        self.pilot_tone = pilot_tone = 19e3
        self.baseband_rate = baseband_rate = samp_rate // baseband_decimation
        self.stereo_subcarrier = stereo_subcarrier = pilot_tone * 2
        self.stereo_button = stereo_button = 0
        self.slider_volume = slider_volume = 0
        self.sdr_gain = sdr_gain = valid_gains[rf_gain]
        self.rds_symbols_per_bit = rds_symbols_per_bit = 2
        self.rds_subcarrier = rds_subcarrier = pilot_tone * 3
        self.rds_samp_rate = rds_samp_rate = baseband_rate / rds_dec
        self.rds_bitrate = rds_bitrate = 1.1875e3
        self.rds_bandwidth = rds_bandwidth = 2.83e3
        self.fm_station = fm_station = 102.7
        self.fm_broadcast_seperation = fm_broadcast_seperation = 0.2
        self.fm_broadcast_low = fm_broadcast_low = 87.1
        self.fm_broadcast_high = fm_broadcast_high = 107.9
        self.audio_rate = audio_rate = 48e3

        ##################################################
        # Blocks
        ##################################################
        self.notebook_top = Qt.QTabWidget()
        self.notebook_top_widget_0 = Qt.QWidget()
        self.notebook_top_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_top_widget_0)
        self.notebook_top_grid_layout_0 = Qt.QGridLayout()
        self.notebook_top_layout_0.addLayout(self.notebook_top_grid_layout_0)
        self.notebook_top.addTab(self.notebook_top_widget_0, "RF Receive")
        self.notebook_top_widget_1 = Qt.QWidget()
        self.notebook_top_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_top_widget_1)
        self.notebook_top_grid_layout_1 = Qt.QGridLayout()
        self.notebook_top_layout_1.addLayout(self.notebook_top_grid_layout_1)
        self.notebook_top.addTab(self.notebook_top_widget_1, "Baseband")
        self.notebook_top_widget_2 = Qt.QWidget()
        self.notebook_top_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_top_widget_2)
        self.notebook_top_grid_layout_2 = Qt.QGridLayout()
        self.notebook_top_layout_2.addLayout(self.notebook_top_grid_layout_2)
        self.notebook_top.addTab(self.notebook_top_widget_2, "Mono Audio")
        self.notebook_top_widget_3 = Qt.QWidget()
        self.notebook_top_layout_3 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_top_widget_3)
        self.notebook_top_grid_layout_3 = Qt.QGridLayout()
        self.notebook_top_layout_3.addLayout(self.notebook_top_grid_layout_3)
        self.notebook_top.addTab(self.notebook_top_widget_3, "Sub-Carrier Generation")
        self.notebook_top_widget_4 = Qt.QWidget()
        self.notebook_top_layout_4 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_top_widget_4)
        self.notebook_top_grid_layout_4 = Qt.QGridLayout()
        self.notebook_top_layout_4.addLayout(self.notebook_top_grid_layout_4)
        self.notebook_top.addTab(self.notebook_top_widget_4, "Stereo")
        self.notebook_top_widget_5 = Qt.QWidget()
        self.notebook_top_layout_5 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_top_widget_5)
        self.notebook_top_grid_layout_5 = Qt.QGridLayout()
        self.notebook_top_layout_5.addLayout(self.notebook_top_grid_layout_5)
        self.notebook_top.addTab(self.notebook_top_widget_5, "RDS")
        self.top_grid_layout.addWidget(self.notebook_top, 3, 0, 1, 8)
        self._slider_volume_range = Range(0, 11.1, 0.1, 0, 100)
        self._slider_volume_win = RangeWidget(self._slider_volume_range, self.set_slider_volume, 'Volume', "counter_slider", float)
        self.top_grid_layout.addWidget(self._slider_volume_win, 1, 1, 1, 1)
        self.notebook_subcarriers = Qt.QTabWidget()
        self.notebook_subcarriers_widget_0 = Qt.QWidget()
        self.notebook_subcarriers_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_subcarriers_widget_0)
        self.notebook_subcarriers_grid_layout_0 = Qt.QGridLayout()
        self.notebook_subcarriers_layout_0.addLayout(self.notebook_subcarriers_grid_layout_0)
        self.notebook_subcarriers.addTab(self.notebook_subcarriers_widget_0, "Pilot Signal")
        self.notebook_subcarriers_widget_1 = Qt.QWidget()
        self.notebook_subcarriers_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_subcarriers_widget_1)
        self.notebook_subcarriers_grid_layout_1 = Qt.QGridLayout()
        self.notebook_subcarriers_layout_1.addLayout(self.notebook_subcarriers_grid_layout_1)
        self.notebook_subcarriers.addTab(self.notebook_subcarriers_widget_1, "Spectrum")
        self.notebook_top_grid_layout_3.addWidget(self.notebook_subcarriers, 0, 0, 1, 1)
        self.notebook_rds = Qt.QTabWidget()
        self.notebook_rds_widget_0 = Qt.QWidget()
        self.notebook_rds_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_rds_widget_0)
        self.notebook_rds_grid_layout_0 = Qt.QGridLayout()
        self.notebook_rds_layout_0.addLayout(self.notebook_rds_grid_layout_0)
        self.notebook_rds.addTab(self.notebook_rds_widget_0, "RDS Signal")
        self.notebook_rds_widget_1 = Qt.QWidget()
        self.notebook_rds_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.notebook_rds_widget_1)
        self.notebook_rds_grid_layout_1 = Qt.QGridLayout()
        self.notebook_rds_layout_1.addLayout(self.notebook_rds_grid_layout_1)
        self.notebook_rds.addTab(self.notebook_rds_widget_1, "RDS Bitstream")
        self.notebook_top_grid_layout_5.addWidget(self.notebook_rds, 0, 0, 1, 1)
        self._fm_station_range = Range(fm_broadcast_low, fm_broadcast_high, fm_broadcast_seperation, 102.7, 200)
        self._fm_station_win = RangeWidget(self._fm_station_range, self.set_fm_station, "FM Station", "counter_slider", float)
        self.top_grid_layout.addWidget(self._fm_station_win, 0, 0, 1, 8)
        self._stereo_button_options = (0, 1, )
        self._stereo_button_labels = ("Mono", "Stereo", )
        self._stereo_button_tool_bar = Qt.QToolBar(self)
        self._stereo_button_tool_bar.addWidget(Qt.QLabel("Audio Output"+": "))
        self._stereo_button_combo_box = Qt.QComboBox()
        self._stereo_button_tool_bar.addWidget(self._stereo_button_combo_box)
        for label in self._stereo_button_labels: self._stereo_button_combo_box.addItem(label)
        self._stereo_button_callback = lambda i: Qt.QMetaObject.invokeMethod(self._stereo_button_combo_box, "setCurrentIndex", Qt.Q_ARG("int", self._stereo_button_options.index(i)))
        self._stereo_button_callback(self.stereo_button)
        self._stereo_button_combo_box.currentIndexChanged.connect(
        	lambda i: self.set_stereo_button(self._stereo_button_options[i]))
        self.top_grid_layout.addWidget(self._stereo_button_tool_bar, 1, 2, 1, 1)
        self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + "" )
        self.rtlsdr_source_0.set_sample_rate(samp_rate)
        self.rtlsdr_source_0.set_center_freq(fm_station * 1e6, 0)
        self.rtlsdr_source_0.set_freq_corr(14, 0)
        self.rtlsdr_source_0.set_dc_offset_mode(2, 0)
        self.rtlsdr_source_0.set_iq_balance_mode(0, 0)
        self.rtlsdr_source_0.set_gain_mode(False, 0)
        self.rtlsdr_source_0.set_gain(sdr_gain, 0)
        self.rtlsdr_source_0.set_if_gain(0, 0)
        self.rtlsdr_source_0.set_bb_gain(0, 0)
        self.rtlsdr_source_0.set_antenna("", 0)
        self.rtlsdr_source_0.set_bandwidth(0, 0)
          
        self.root_raised_cosine_filter_0 = filter.fir_filter_ccf(1, firdes.root_raised_cosine(
        	2, rds_samp_rate, rds_bitrate * rds_symbols_per_bit, 0.275, 16))
        self._rf_gain_range = Range(0, len(valid_gains)-1, 1, len(valid_gains)-1, 200)
        self._rf_gain_win = RangeWidget(self._rf_gain_range, self.set_rf_gain, "RF Gain", "counter_slider", int)
        self.top_grid_layout.addWidget(self._rf_gain_win, 1, 0, 1, 1)
        self.rds_qt_panel_0 = self.rds_qt_panel_0 = rds.qt_panel()
        self.notebook_top_layout_5.addWidget(self.rds_qt_panel_0)
          
        self.rational_resampler_xxx_0_0_0_1 = filter.rational_resampler_fff(
                interpolation=int(audio_rate),
                decimation=int(baseband_rate),
                taps=None,
                fractional_bw=None,
        )
        self.rational_resampler_xxx_0_0_0_0 = filter.rational_resampler_fff(
                interpolation=int(audio_rate),
                decimation=int(baseband_rate),
                taps=None,
                fractional_bw=None,
        )
        self.rational_resampler_xxx_0_0_0 = filter.rational_resampler_fff(
                interpolation=int(audio_rate),
                decimation=int(baseband_rate),
                taps=None,
                fractional_bw=None,
        )
        self.qtgui_time_sink_x_1 = qtgui.time_sink_f(
        	1024, #size
        	samp_rate, #samp_rate
        	"RBDS Bit Stream", #name
        	2 #number of inputs
        )
        self.qtgui_time_sink_x_1.set_update_time(0.10)
        self.qtgui_time_sink_x_1.set_y_axis(-1.7, 1.7)
        
        self.qtgui_time_sink_x_1.set_y_label("Amplitude", "")
        
        self.qtgui_time_sink_x_1.enable_tags(-1, False)
        self.qtgui_time_sink_x_1.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
        self.qtgui_time_sink_x_1.enable_autoscale(False)
        self.qtgui_time_sink_x_1.enable_grid(True)
        self.qtgui_time_sink_x_1.enable_control_panel(False)
        
        if not True:
          self.qtgui_time_sink_x_1.disable_legend()
        
        labels = ["Raw Bit Stream", "Differential Decoded", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "blue"]
        styles = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1,
                   -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        
        for i in xrange(2):
            if len(labels[i]) == 0:
                self.qtgui_time_sink_x_1.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_time_sink_x_1.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_1.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_1.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_1.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_1.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_1.set_line_alpha(i, alphas[i])
        
        self._qtgui_time_sink_x_1_win = sip.wrapinstance(self.qtgui_time_sink_x_1.pyqwidget(), Qt.QWidget)
        self.notebook_rds_layout_1.addWidget(self._qtgui_time_sink_x_1_win)
        self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
        	1024, #size
        	baseband_rate, #samp_rate
        	"19 KHz Pilot Signal", #name
        	1 #number of inputs
        )
        self.qtgui_time_sink_x_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0.set_y_axis(-1.5, 1.5)
        
        self.qtgui_time_sink_x_0.set_y_label("Amplitude", "counts")
        
        self.qtgui_time_sink_x_0.enable_tags(-1, False)
        self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
        self.qtgui_time_sink_x_0.enable_autoscale(False)
        self.qtgui_time_sink_x_0.enable_grid(False)
        self.qtgui_time_sink_x_0.enable_control_panel(False)
        
        if not False:
          self.qtgui_time_sink_x_0.disable_legend()
        
        labels = ["", "", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "blue"]
        styles = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1,
                   -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        
        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_time_sink_x_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])
        
        self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
        self.notebook_subcarriers_grid_layout_0.addWidget(self._qtgui_time_sink_x_0_win, 0, 1, 1, 1)
        self.qtgui_freq_sink_x_1 = qtgui.freq_sink_c(
        	1024, #size
        	firdes.WIN_BLACKMAN_hARRIS, #wintype
        	0, #fc
        	rds_samp_rate, #bw
        	"RDS Subcarrier Signal (DSB-SSC)", #name
        	2 #number of inputs
        )
        self.qtgui_freq_sink_x_1.set_update_time(0.10)
        self.qtgui_freq_sink_x_1.set_y_axis(-100, 0)
        self.qtgui_freq_sink_x_1.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
        self.qtgui_freq_sink_x_1.enable_autoscale(False)
        self.qtgui_freq_sink_x_1.enable_grid(False)
        self.qtgui_freq_sink_x_1.set_fft_average(1.0)
        self.qtgui_freq_sink_x_1.enable_control_panel(False)
        
        if not False:
          self.qtgui_freq_sink_x_1.disable_legend()
        
        if complex == type(float()):
          self.qtgui_freq_sink_x_1.set_plot_pos_half(not True)
        
        labels = ["", "", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "dark blue"]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(2):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_1.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_1.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_1.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_1.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_1.set_line_alpha(i, alphas[i])
        
        self._qtgui_freq_sink_x_1_win = sip.wrapinstance(self.qtgui_freq_sink_x_1.pyqwidget(), Qt.QWidget)
        self.notebook_rds_grid_layout_0 .addWidget(self._qtgui_freq_sink_x_1_win,  0, 0, 1, 1)
        self.qtgui_freq_sink_x_0_1_0_1_0 = qtgui.freq_sink_f(
        	1024, #size
        	firdes.WIN_BLACKMAN_hARRIS, #wintype
        	0, #fc
        	audio_rate, #bw
        	"Stereo Audio Left", #name
        	2 #number of inputs
        )
        self.qtgui_freq_sink_x_0_1_0_1_0.set_update_time(0.10)
        self.qtgui_freq_sink_x_0_1_0_1_0.set_y_axis(-100, -30)
        self.qtgui_freq_sink_x_0_1_0_1_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
        self.qtgui_freq_sink_x_0_1_0_1_0.enable_autoscale(False)
        self.qtgui_freq_sink_x_0_1_0_1_0.enable_grid(False)
        self.qtgui_freq_sink_x_0_1_0_1_0.set_fft_average(0.1)
        self.qtgui_freq_sink_x_0_1_0_1_0.enable_control_panel(False)
        
        if not False:
          self.qtgui_freq_sink_x_0_1_0_1_0.disable_legend()
        
        if float == type(float()):
          self.qtgui_freq_sink_x_0_1_0_1_0.set_plot_pos_half(not False)
        
        labels = ["Stereo Left", "Stereo Right", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "dark blue"]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(2):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0_1_0_1_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0_1_0_1_0.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0_1_0_1_0.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0_1_0_1_0.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0_1_0_1_0.set_line_alpha(i, alphas[i])
        
        self._qtgui_freq_sink_x_0_1_0_1_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0_1_0_1_0.pyqwidget(), Qt.QWidget)
        self.notebook_top_grid_layout_4.addWidget(self._qtgui_freq_sink_x_0_1_0_1_0_win, 0, 0, 1, 1)
        self.qtgui_freq_sink_x_0_1_0_1 = qtgui.freq_sink_f(
        	1024, #size
        	firdes.WIN_BLACKMAN_hARRIS, #wintype
        	0, #fc
        	audio_rate, #bw
        	"Stereo Audio Right", #name
        	2 #number of inputs
        )
        self.qtgui_freq_sink_x_0_1_0_1.set_update_time(0.10)
        self.qtgui_freq_sink_x_0_1_0_1.set_y_axis(-100, -30)
        self.qtgui_freq_sink_x_0_1_0_1.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
        self.qtgui_freq_sink_x_0_1_0_1.enable_autoscale(False)
        self.qtgui_freq_sink_x_0_1_0_1.enable_grid(False)
        self.qtgui_freq_sink_x_0_1_0_1.set_fft_average(0.1)
        self.qtgui_freq_sink_x_0_1_0_1.enable_control_panel(False)
        
        if not False:
          self.qtgui_freq_sink_x_0_1_0_1.disable_legend()
        
        if float == type(float()):
          self.qtgui_freq_sink_x_0_1_0_1.set_plot_pos_half(not False)
        
        labels = ["Stereo Right", "Stereo Right", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "dark blue"]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(2):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0_1_0_1.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0_1_0_1.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0_1_0_1.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0_1_0_1.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0_1_0_1.set_line_alpha(i, alphas[i])
        
        self._qtgui_freq_sink_x_0_1_0_1_win = sip.wrapinstance(self.qtgui_freq_sink_x_0_1_0_1.pyqwidget(), Qt.QWidget)
        self.notebook_top_grid_layout_4.addWidget(self._qtgui_freq_sink_x_0_1_0_1_win, 0, 1, 1, 1)
        self.qtgui_freq_sink_x_0_1_0_0 = qtgui.freq_sink_f(
        	1024, #size
        	firdes.WIN_BLACKMAN_hARRIS, #wintype
        	0, #fc
        	baseband_rate, #bw
        	"Pilot & Stereo Carrier", #name
        	2 #number of inputs
        )
        self.qtgui_freq_sink_x_0_1_0_0.set_update_time(0.10)
        self.qtgui_freq_sink_x_0_1_0_0.set_y_axis(-80, 0)
        self.qtgui_freq_sink_x_0_1_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
        self.qtgui_freq_sink_x_0_1_0_0.enable_autoscale(False)
        self.qtgui_freq_sink_x_0_1_0_0.enable_grid(False)
        self.qtgui_freq_sink_x_0_1_0_0.set_fft_average(0.1)
        self.qtgui_freq_sink_x_0_1_0_0.enable_control_panel(False)
        
        if not True:
          self.qtgui_freq_sink_x_0_1_0_0.disable_legend()
        
        if float == type(float()):
          self.qtgui_freq_sink_x_0_1_0_0.set_plot_pos_half(not False)
        
        labels = ["Pilot Tone", "Stereo Carrier", "RDS Carrier", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "dark blue"]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(2):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0_1_0_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0_1_0_0.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0_1_0_0.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0_1_0_0.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0_1_0_0.set_line_alpha(i, alphas[i])
        
        self._qtgui_freq_sink_x_0_1_0_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0_1_0_0.pyqwidget(), Qt.QWidget)
        self.notebook_subcarriers_grid_layout_1.addWidget(self._qtgui_freq_sink_x_0_1_0_0_win, 0, 0, 1, 1)
        self.qtgui_freq_sink_x_0_0_0 = qtgui.freq_sink_f(
        	1024, #size
        	firdes.WIN_BLACKMAN_hARRIS, #wintype
        	0, #fc
        	audio_rate, #bw
        	"Mono Audio (L+R)", #name
        	2 #number of inputs
        )
        self.qtgui_freq_sink_x_0_0_0.set_update_time(0.10)
        self.qtgui_freq_sink_x_0_0_0.set_y_axis(-100, -30)
        self.qtgui_freq_sink_x_0_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
        self.qtgui_freq_sink_x_0_0_0.enable_autoscale(False)
        self.qtgui_freq_sink_x_0_0_0.enable_grid(False)
        self.qtgui_freq_sink_x_0_0_0.set_fft_average(0.2)
        self.qtgui_freq_sink_x_0_0_0.enable_control_panel(False)
        
        if not False:
          self.qtgui_freq_sink_x_0_0_0.disable_legend()
        
        if float == type(float()):
          self.qtgui_freq_sink_x_0_0_0.set_plot_pos_half(not False)
        
        labels = ["", "", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "dark blue"]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(2):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0_0_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0_0_0.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0_0_0.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0_0_0.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0_0_0.set_line_alpha(i, alphas[i])
        
        self._qtgui_freq_sink_x_0_0_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0_0_0.pyqwidget(), Qt.QWidget)
        self.notebook_top_grid_layout_2.addWidget(self._qtgui_freq_sink_x_0_0_0_win, 1, 0, 1, 5)
        self.qtgui_freq_sink_x_0_0 = qtgui.freq_sink_f(
        	1024, #size
        	firdes.WIN_BLACKMAN_hARRIS, #wintype
        	0, #fc
        	baseband_rate, #bw
        	"FM Baseband", #name
        	1 #number of inputs
        )
        self.qtgui_freq_sink_x_0_0.set_update_time(0.10)
        self.qtgui_freq_sink_x_0_0.set_y_axis(-100, -30)
        self.qtgui_freq_sink_x_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
        self.qtgui_freq_sink_x_0_0.enable_autoscale(False)
        self.qtgui_freq_sink_x_0_0.enable_grid(False)
        self.qtgui_freq_sink_x_0_0.set_fft_average(0.1)
        self.qtgui_freq_sink_x_0_0.enable_control_panel(False)
        
        if not False:
          self.qtgui_freq_sink_x_0_0.disable_legend()
        
        if float == type(float()):
          self.qtgui_freq_sink_x_0_0.set_plot_pos_half(not False)
        
        labels = ["", "", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "dark blue"]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0_0.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0_0.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0_0.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0_0.set_line_alpha(i, alphas[i])
        
        self._qtgui_freq_sink_x_0_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0_0.pyqwidget(), Qt.QWidget)
        self.notebook_top_grid_layout_1.addWidget(self._qtgui_freq_sink_x_0_0_win, 0, 1, 1, 1)
        self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c(
        	1024, #size
        	firdes.WIN_BLACKMAN_hARRIS, #wintype
        	fm_station * 1e6, #fc
        	samp_rate, #bw
        	"RF Frequency", #name
        	1 #number of inputs
        )
        self.qtgui_freq_sink_x_0.set_update_time(0.10)
        self.qtgui_freq_sink_x_0.set_y_axis(-90, 0)
        self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
        self.qtgui_freq_sink_x_0.enable_autoscale(False)
        self.qtgui_freq_sink_x_0.enable_grid(False)
        self.qtgui_freq_sink_x_0.set_fft_average(0.1)
        self.qtgui_freq_sink_x_0.enable_control_panel(False)
        
        if not False:
          self.qtgui_freq_sink_x_0.disable_legend()
        
        if complex == type(float()):
          self.qtgui_freq_sink_x_0.set_plot_pos_half(not True)
        
        labels = ["", "", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
                  "magenta", "yellow", "dark red", "dark green", "dark blue"]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i])
        
        self._qtgui_freq_sink_x_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
        self.notebook_top_grid_layout_0.addWidget(self._qtgui_freq_sink_x_0_win, 0, 1, 1, 1)
        self.qtgui_const_sink_x_0 = qtgui.const_sink_c(
        	1024, #size
        	"RDS BPSK Constellation", #name
        	1 #number of inputs
        )
        self.qtgui_const_sink_x_0.set_update_time(0.10)
        self.qtgui_const_sink_x_0.set_y_axis(-1.6, 1.6)
        self.qtgui_const_sink_x_0.set_x_axis(-1.6, 1.6)
        self.qtgui_const_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, "")
        self.qtgui_const_sink_x_0.enable_autoscale(False)
        self.qtgui_const_sink_x_0.enable_grid(True)
        
        if not False:
          self.qtgui_const_sink_x_0.disable_legend()
        
        labels = ["RBDS BPSK", "", "", "", "",
                  "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1,
                  1, 1, 1, 1, 1]
        colors = ["blue", "red", "red", "red", "red",
                  "red", "red", "red", "red", "red"]
        styles = [0, 0, 0, 0, 0,
                  0, 0, 0, 0, 0]
        markers = [0, 0, 0, 0, 0,
                   0, 0, 0, 0, 0]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_const_sink_x_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_const_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_const_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_const_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_const_sink_x_0.set_line_style(i, styles[i])
            self.qtgui_const_sink_x_0.set_line_marker(i, markers[i])
            self.qtgui_const_sink_x_0.set_line_alpha(i, alphas[i])
        
        self._qtgui_const_sink_x_0_win = sip.wrapinstance(self.qtgui_const_sink_x_0.pyqwidget(), Qt.QWidget)
        self.notebook_rds_grid_layout_0.addWidget(self._qtgui_const_sink_x_0_win, 0, 1, 1, 1)
        self.low_pass_filter_4 = filter.fir_filter_fff(1, firdes.low_pass(
        	1, baseband_rate, 60e3, 1e3, firdes.WIN_HAMMING, 6.76))
        self.low_pass_filter_2 = filter.fir_filter_fff(1, firdes.low_pass(
        	1, baseband_rate, 16e3, 1e3, firdes.WIN_HAMMING, 6.76))
        self.low_pass_filter_1 = filter.fir_filter_fff(1, firdes.low_pass(
        	10, baseband_rate, 15e3, 3e3, firdes.WIN_HAMMING, 6.76))
        self.low_pass_filter_0 = filter.fir_filter_ccf(baseband_decimation, firdes.low_pass(
        	1, samp_rate, 75e3, 1e3, firdes.WIN_HAMMING, 6.76))
        self.gr_rds_parser_0 = rds.parser(False, False, 1)
        self.gr_rds_decoder_0 = rds.decoder(False, False)
        self.freq_xlating_fir_filter_xxx_1 = filter.freq_xlating_fir_filter_fcc(rds_dec, (firdes.low_pass(2500,baseband_rate,rds_bandwidth,1e3,firdes.WIN_HAMMING)), rds_subcarrier, baseband_rate)
        self.digital_mpsk_receiver_cc_0 = digital.mpsk_receiver_cc(2, 0, (2 * cmath.pi) / 100, -0.00006, 0.00006, 0.5, 0.05, rds_samp_rate / (rds_bitrate * 2), ((rds_samp_rate / (rds_bitrate * 2)) ** 2)/ 4, 0.005)
        self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(2)
        self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
        self.blocks_uchar_to_float_0_0 = blocks.uchar_to_float()
        self.blocks_uchar_to_float_0 = blocks.uchar_to_float()
        self.blocks_sub_xx_0 = blocks.sub_ff(1)
        self.blocks_multiply_xx_1 = blocks.multiply_vff(1)
        self.blocks_multiply_xx_0 = blocks.multiply_vff(1)
        self.blocks_multiply_const_vxx_1_0_1_0_1 = blocks.multiply_const_vff((11, ))
        self.blocks_multiply_const_vxx_1_0_1_0_0 = blocks.multiply_const_vff((11, ))
        self.blocks_multiply_const_vxx_1_0_1_0 = blocks.multiply_const_vff((11, ))
        self.blocks_multiply_const_vxx_1_0_1 = blocks.multiply_const_vff((slider_volume, ))
        self.blocks_multiply_const_vxx_1_0_0 = blocks.multiply_const_vff((slider_volume, ))
        self.blocks_multiply_const_vxx_1_0 = blocks.multiply_const_vff((slider_volume, ))
        self.blocks_keep_one_in_n_0 = blocks.keep_one_in_n(gr.sizeof_char*1, 2)
        self.blocks_complex_to_real_1 = blocks.complex_to_real(1)
        self.blocks_complex_to_real_0 = blocks.complex_to_real(1)
        self.blocks_add_xx_0 = blocks.add_vff(1)
        self.blocks_add_const_vxx_0_0 = blocks.add_const_vff((0.5, ))
        self.blocks_add_const_vxx_0 = blocks.add_const_vff((-1.5, ))
        self.blks2_selector_0_0 = grc_blks2.selector(
        	item_size=gr.sizeof_float*1,
        	num_inputs=2,
        	num_outputs=1,
        	input_index=0,
        	output_index=0,
        )
        self.blks2_selector_0 = grc_blks2.selector(
        	item_size=gr.sizeof_float*1,
        	num_inputs=2,
        	num_outputs=1,
        	input_index=0,
        	output_index=0,
        )
        self.band_pass_filter_1 = filter.fir_filter_fff(1, firdes.band_pass(
        	1, baseband_rate, stereo_subcarrier - 0.5e3, stereo_subcarrier + 0.5e3, 0.5e3, firdes.WIN_HAMMING, 6.76))
        self.band_pass_filter_0_0 = filter.fir_filter_fff(1, firdes.band_pass(
        	1, baseband_rate, 23e3, 53e3, 1e3, firdes.WIN_HAMMING, 6.76))
        self.band_pass_filter_0 = filter.fir_filter_fcc(1, firdes.complex_band_pass(
        	1, baseband_rate, pilot_tone - 0.5e3, pilot_tone+0.5e3, 1e3, firdes.WIN_HAMMING, 6.76))
        self.audio_sink_0 = audio.sink(48000, "", True)
        self.analog_wfm_rcv_0 = analog.wfm_rcv(
        	quad_rate=baseband_rate,
        	audio_decimation=1,
        )
        self.analog_pll_refout_cc_0 = analog.pll_refout_cc(1e-3, 2 * cmath.pi * (19000+200) / baseband_rate, 2 * cmath.pi * (19000-200) / baseband_rate)
        self.analog_fm_deemph_0_0_0_1 = analog.fm_deemph(fs=baseband_rate, tau=75e-6)
        self.analog_fm_deemph_0_0_0_0 = analog.fm_deemph(fs=baseband_rate, tau=75e-6)
        self.analog_fm_deemph_0_0_0 = analog.fm_deemph(fs=baseband_rate, tau=75e-6)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.gr_rds_decoder_0, 'out'), (self.gr_rds_parser_0, 'in'))    
        self.msg_connect((self.gr_rds_parser_0, 'out'), (self.rds_qt_panel_0, 'in'))    
        self.connect((self.analog_fm_deemph_0_0_0, 0), (self.rational_resampler_xxx_0_0_0, 0))    
        self.connect((self.analog_fm_deemph_0_0_0_0, 0), (self.rational_resampler_xxx_0_0_0_0, 0))    
        self.connect((self.analog_fm_deemph_0_0_0_1, 0), (self.rational_resampler_xxx_0_0_0_1, 0))    
        self.connect((self.analog_pll_refout_cc_0, 0), (self.blocks_complex_to_real_1, 0))    
        self.connect((self.analog_wfm_rcv_0, 0), (self.low_pass_filter_4, 0))    
        self.connect((self.band_pass_filter_0, 0), (self.analog_pll_refout_cc_0, 0))    
        self.connect((self.band_pass_filter_0_0, 0), (self.blocks_multiply_xx_1, 1))    
        self.connect((self.band_pass_filter_1, 0), (self.blocks_multiply_xx_1, 0))    
        self.connect((self.band_pass_filter_1, 0), (self.qtgui_freq_sink_x_0_1_0_0, 1))    
        self.connect((self.blks2_selector_0, 0), (self.audio_sink_0, 0))    
        self.connect((self.blks2_selector_0_0, 0), (self.audio_sink_0, 1))    
        self.connect((self.blocks_add_const_vxx_0, 0), (self.qtgui_time_sink_x_1, 1))    
        self.connect((self.blocks_add_const_vxx_0_0, 0), (self.qtgui_time_sink_x_1, 0))    
        self.connect((self.blocks_add_xx_0, 0), (self.analog_fm_deemph_0_0_0_0, 0))    
        self.connect((self.blocks_complex_to_real_0, 0), (self.digital_binary_slicer_fb_0, 0))    
        self.connect((self.blocks_complex_to_real_1, 0), (self.blocks_multiply_xx_0, 0))    
        self.connect((self.blocks_complex_to_real_1, 0), (self.blocks_multiply_xx_0, 1))    
        self.connect((self.blocks_complex_to_real_1, 0), (self.qtgui_freq_sink_x_0_1_0_0, 0))    
        self.connect((self.blocks_complex_to_real_1, 0), (self.qtgui_time_sink_x_0, 0))    
        self.connect((self.blocks_keep_one_in_n_0, 0), (self.blocks_uchar_to_float_0, 0))    
        self.connect((self.blocks_keep_one_in_n_0, 0), (self.digital_diff_decoder_bb_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_1_0, 0), (self.blks2_selector_0, 1))    
        self.connect((self.blocks_multiply_const_vxx_1_0, 0), (self.qtgui_freq_sink_x_0_1_0_1, 1))    
        self.connect((self.blocks_multiply_const_vxx_1_0_0, 0), (self.blks2_selector_0_0, 1))    
        self.connect((self.blocks_multiply_const_vxx_1_0_0, 0), (self.qtgui_freq_sink_x_0_1_0_1_0, 1))    
        self.connect((self.blocks_multiply_const_vxx_1_0_1, 0), (self.blks2_selector_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_1_0_1, 0), (self.blks2_selector_0_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_1_0_1, 0), (self.qtgui_freq_sink_x_0_0_0, 1))    
        self.connect((self.blocks_multiply_const_vxx_1_0_1_0, 0), (self.qtgui_freq_sink_x_0_0_0, 0))    
        self.connect((self.blocks_multiply_const_vxx_1_0_1_0_0, 0), (self.qtgui_freq_sink_x_0_1_0_1, 0))    
        self.connect((self.blocks_multiply_const_vxx_1_0_1_0_1, 0), (self.qtgui_freq_sink_x_0_1_0_1_0, 0))    
        self.connect((self.blocks_multiply_xx_0, 0), (self.band_pass_filter_1, 0))    
        self.connect((self.blocks_multiply_xx_1, 0), (self.low_pass_filter_2, 0))    
        self.connect((self.blocks_sub_xx_0, 0), (self.analog_fm_deemph_0_0_0, 0))    
        self.connect((self.blocks_uchar_to_float_0, 0), (self.blocks_add_const_vxx_0_0, 0))    
        self.connect((self.blocks_uchar_to_float_0_0, 0), (self.blocks_add_const_vxx_0, 0))    
        self.connect((self.digital_binary_slicer_fb_0, 0), (self.blocks_keep_one_in_n_0, 0))    
        self.connect((self.digital_diff_decoder_bb_0, 0), (self.blocks_uchar_to_float_0_0, 0))    
        self.connect((self.digital_diff_decoder_bb_0, 0), (self.gr_rds_decoder_0, 0))    
        self.connect((self.digital_mpsk_receiver_cc_0, 0), (self.blocks_complex_to_real_0, 0))    
        self.connect((self.digital_mpsk_receiver_cc_0, 0), (self.qtgui_const_sink_x_0, 0))    
        self.connect((self.freq_xlating_fir_filter_xxx_1, 0), (self.qtgui_freq_sink_x_1, 0))    
        self.connect((self.freq_xlating_fir_filter_xxx_1, 0), (self.root_raised_cosine_filter_0, 0))    
        self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0))    
        self.connect((self.low_pass_filter_1, 0), (self.analog_fm_deemph_0_0_0_1, 0))    
        self.connect((self.low_pass_filter_1, 0), (self.blocks_add_xx_0, 0))    
        self.connect((self.low_pass_filter_1, 0), (self.blocks_sub_xx_0, 0))    
        self.connect((self.low_pass_filter_2, 0), (self.blocks_add_xx_0, 1))    
        self.connect((self.low_pass_filter_2, 0), (self.blocks_sub_xx_0, 1))    
        self.connect((self.low_pass_filter_4, 0), (self.band_pass_filter_0, 0))    
        self.connect((self.low_pass_filter_4, 0), (self.band_pass_filter_0_0, 0))    
        self.connect((self.low_pass_filter_4, 0), (self.freq_xlating_fir_filter_xxx_1, 0))    
        self.connect((self.low_pass_filter_4, 0), (self.low_pass_filter_1, 0))    
        self.connect((self.low_pass_filter_4, 0), (self.qtgui_freq_sink_x_0_0, 0))    
        self.connect((self.rational_resampler_xxx_0_0_0, 0), (self.blocks_multiply_const_vxx_1_0, 0))    
        self.connect((self.rational_resampler_xxx_0_0_0, 0), (self.blocks_multiply_const_vxx_1_0_1_0_0, 0))    
        self.connect((self.rational_resampler_xxx_0_0_0_0, 0), (self.blocks_multiply_const_vxx_1_0_0, 0))    
        self.connect((self.rational_resampler_xxx_0_0_0_0, 0), (self.blocks_multiply_const_vxx_1_0_1_0_1, 0))    
        self.connect((self.rational_resampler_xxx_0_0_0_1, 0), (self.blocks_multiply_const_vxx_1_0_1, 0))    
        self.connect((self.rational_resampler_xxx_0_0_0_1, 0), (self.blocks_multiply_const_vxx_1_0_1_0, 0))    
        self.connect((self.root_raised_cosine_filter_0, 0), (self.digital_mpsk_receiver_cc_0, 0))    
        self.connect((self.root_raised_cosine_filter_0, 0), (self.qtgui_freq_sink_x_1, 1))    
        self.connect((self.rtlsdr_source_0, 0), (self.low_pass_filter_0, 0))    
        self.connect((self.rtlsdr_source_0, 0), (self.qtgui_freq_sink_x_0, 0))    
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self,
                                         title="Vor Receive Realtime Clean")

        ##################################################
        # Variables
        ##################################################
        self.morse_vol = morse_vol = 10
        self.samp_rate = samp_rate = 32000
        self.rtl_gain = rtl_gain = 42
        self.rtl_freq = rtl_freq = 112500e3
        self.morse_gain = morse_gain = pow(10, morse_vol / 10)
        self.morse_amp_level = morse_amp_level = 0
        self.PI = PI = 3.14159

        ##################################################
        # Blocks
        ##################################################
        self.wxgui_scopesink2_1_0_0 = scopesink2.scope_sink_f(
            self.GetWin(),
            title='Morse',
            sample_rate=samp_rate / (1600),
            v_scale=0,
            v_offset=0,
            t_scale=0,
            ac_couple=False,
            xy_mode=False,
            num_inputs=1,
            trig_mode=wxgui.TRIG_MODE_STRIPCHART,
            y_axis_label='Amp',
        )
        self.Add(self.wxgui_scopesink2_1_0_0.win)
        self.rtlsdr_source_0 = osmosdr.source(args="numchan=" + str(1) + " " +
                                              '')
        self.rtlsdr_source_0.set_sample_rate(samp_rate * 64)
        self.rtlsdr_source_0.set_center_freq(rtl_freq, 0)
        self.rtlsdr_source_0.set_freq_corr(0, 0)
        self.rtlsdr_source_0.set_dc_offset_mode(0, 0)
        self.rtlsdr_source_0.set_iq_balance_mode(0, 0)
        self.rtlsdr_source_0.set_gain_mode(False, 0)
        self.rtlsdr_source_0.set_gain(rtl_gain, 0)
        self.rtlsdr_source_0.set_if_gain(20, 0)
        self.rtlsdr_source_0.set_bb_gain(20, 0)
        self.rtlsdr_source_0.set_antenna('', 0)
        self.rtlsdr_source_0.set_bandwidth(0, 0)

        self.pfb_decimator_ccf_0 = pfb.decimator_ccf(
            64, (firdes.low_pass(1, samp_rate * 64, 16e3, 200e3)), 0, 100,
            True, True)
        self.pfb_decimator_ccf_0.declare_sample_delay(0)

        _morse_vol_sizer = wx.BoxSizer(wx.VERTICAL)
        self._morse_vol_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_morse_vol_sizer,
            value=self.morse_vol,
            callback=self.set_morse_vol,
            label='Morse Volume (dB):',
            converter=forms.float_converter(),
            proportion=0,
        )
        self._morse_vol_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_morse_vol_sizer,
            value=self.morse_vol,
            callback=self.set_morse_vol,
            minimum=-25,
            maximum=25,
            num_steps=1000,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.Add(_morse_vol_sizer)

        def _morse_amp_level_probe():
            while True:
                val = self.morse_amp.level()
                try:
                    self.set_morse_amp_level(val)
                except AttributeError:
                    pass
                time.sleep(1.0 / (25))

        _morse_amp_level_thread = threading.Thread(
            target=_morse_amp_level_probe)
        _morse_amp_level_thread.daemon = True
        _morse_amp_level_thread.start()

        self.hilbert_fc_0 = filter.hilbert_fc(64, firdes.WIN_HAMMING, 6.76)
        self.goertzel_fc_0_0 = fft.goertzel_fc(samp_rate, 3200, 30)
        self.goertzel_fc_0 = fft.goertzel_fc(samp_rate, 3200, 30)
        self.freq_xlating_fft_filter_ccc_0 = filter.freq_xlating_fft_filter_ccc(
            1, (firdes.low_pass(1, samp_rate, 480 * 2, 500 * 2)), 9960,
            samp_rate)
        self.freq_xlating_fft_filter_ccc_0.set_nthreads(1)
        self.freq_xlating_fft_filter_ccc_0.declare_sample_delay(0)
        self.blocks_tcp_server_sink_0 = blocks.tcp_server_sink(
            gr.sizeof_gr_complex * 1, '0.0.0.0', 20000, True)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff(
            (morse_gain, ))
        self.blocks_multiply_conjugate_cc_0 = blocks.multiply_conjugate_cc(1)
        self.blocks_integrate_xx_1 = blocks.integrate_ff(1600, 1)
        self.blocks_integrate_xx_0 = blocks.integrate_cc(8, 1)
        self.blocks_complex_to_mag_squared_0 = blocks.complex_to_mag_squared(1)
        self.blocks_complex_to_mag_0 = blocks.complex_to_mag(1)
        self.band_pass_filter_0 = filter.fir_filter_fcc(
            1,
            firdes.complex_band_pass(1, samp_rate, 1010, 1030, 100,
                                     firdes.WIN_HAMMING, 6.76))
        self.audio_sink_0_0 = audio.sink(samp_rate, '', True)
        self.analog_wfm_rcv_0 = analog.wfm_rcv(
            quad_rate=samp_rate,
            audio_decimation=1,
        )
        self.analog_agc3_xx_0 = analog.agc3_cc(1e-3, 1e-4, 1.0, 1.0, 1)
        self.analog_agc3_xx_0.set_max_gain(65536)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.analog_agc3_xx_0, 0),
                     (self.blocks_complex_to_mag_0, 0))
        self.connect((self.analog_wfm_rcv_0, 0), (self.goertzel_fc_0_0, 0))
        self.connect((self.band_pass_filter_0, 0),
                     (self.blocks_complex_to_mag_squared_0, 0))
        self.connect((self.blocks_complex_to_mag_0, 0),
                     (self.band_pass_filter_0, 0))
        self.connect((self.blocks_complex_to_mag_0, 0),
                     (self.goertzel_fc_0, 0))
        self.connect((self.blocks_complex_to_mag_0, 0), (self.hilbert_fc_0, 0))
        self.connect((self.blocks_complex_to_mag_squared_0, 0),
                     (self.blocks_integrate_xx_1, 0))
        self.connect((self.blocks_complex_to_mag_squared_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.blocks_integrate_xx_0, 0),
                     (self.blocks_tcp_server_sink_0, 0))
        self.connect((self.blocks_integrate_xx_1, 0),
                     (self.wxgui_scopesink2_1_0_0, 0))
        self.connect((self.blocks_multiply_conjugate_cc_0, 0),
                     (self.blocks_integrate_xx_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.audio_sink_0_0, 0))
        self.connect((self.freq_xlating_fft_filter_ccc_0, 0),
                     (self.analog_wfm_rcv_0, 0))
        self.connect((self.goertzel_fc_0, 0),
                     (self.blocks_multiply_conjugate_cc_0, 0))
        self.connect((self.goertzel_fc_0_0, 0),
                     (self.blocks_multiply_conjugate_cc_0, 1))
        self.connect((self.hilbert_fc_0, 0),
                     (self.freq_xlating_fft_filter_ccc_0, 0))
        self.connect((self.pfb_decimator_ccf_0, 0), (self.analog_agc3_xx_0, 0))
        self.connect((self.rtlsdr_source_0, 0), (self.pfb_decimator_ccf_0, 0))
Example #16
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="AM Transmission")
        _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
        self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 480000
        self.vol = vol = 1
        self.transmit_type = transmit_type = 1

        self.taps_rx = taps_rx = firdes.band_pass(1.0, samp_rate, 120e3, 180e3,
                                                  2000, firdes.WIN_HAMMING,
                                                  6.76)

        self.source = source = 0
        self.level_signal = level_signal = 0
        self.level_carrier = level_carrier = 0.1

        self.fft_taps = fft_taps = firdes.low_pass(1.0, samp_rate, 180e3, 5000,
                                                   firdes.WIN_HAMMING, 6.76)

        self.audio_taps = audio_taps = firdes.low_pass(2, samp_rate, 10e3,
                                                       1000,
                                                       firdes.WIN_HAMMING,
                                                       6.76)

        ##################################################
        # Blocks
        ##################################################
        _vol_sizer = wx.BoxSizer(wx.VERTICAL)
        self._vol_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_vol_sizer,
            value=self.vol,
            callback=self.set_vol,
            label='Volume',
            converter=forms.float_converter(),
            proportion=0,
        )
        self._vol_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_vol_sizer,
            value=self.vol,
            callback=self.set_vol,
            minimum=0,
            maximum=2,
            num_steps=20,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_vol_sizer, 0, 40, 1, 10)
        self._transmit_type_chooser = forms.radio_buttons(
            parent=self.GetWin(),
            value=self.transmit_type,
            callback=self.set_transmit_type,
            label='Type',
            choices=[0, 1],
            labels=["SC", "TC"],
            style=wx.RA_HORIZONTAL,
        )
        self.GridAdd(self._transmit_type_chooser, 0, 30, 1, 10)
        self.tabs = self.tabs = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
        self.tabs.AddPage(grc_wxgui.Panel(self.tabs), "Audio")
        self.tabs.AddPage(grc_wxgui.Panel(self.tabs), "Signal")
        self.tabs.AddPage(grc_wxgui.Panel(self.tabs), "Spectrum")
        self.tabs.AddPage(grc_wxgui.Panel(self.tabs), "Trap")
        self.Add(self.tabs)
        self._source_chooser = forms.radio_buttons(
            parent=self.GetWin(),
            value=self.source,
            callback=self.set_source,
            label='Source',
            choices=[0, 1],
            labels=['Tone', 'Audio'],
            style=wx.RA_HORIZONTAL,
        )
        self.GridAdd(self._source_chooser, 0, 0, 1, 10)
        _level_signal_sizer = wx.BoxSizer(wx.VERTICAL)
        self._level_signal_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_level_signal_sizer,
            value=self.level_signal,
            callback=self.set_level_signal,
            label='Signal',
            converter=forms.float_converter(),
            proportion=0,
        )
        self._level_signal_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_level_signal_sizer,
            value=self.level_signal,
            callback=self.set_level_signal,
            minimum=0,
            maximum=1,
            num_steps=10,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_level_signal_sizer, 0, 20, 1, 10)
        self.wxgui_scopesink2_2 = scopesink2.scope_sink_f(
            self.tabs.GetPage(3).GetWin(),
            title='Trapezoid',
            sample_rate=samp_rate,
            v_scale=0.5,
            v_offset=0,
            t_scale=4,
            ac_couple=True,
            xy_mode=True,
            num_inputs=2,
            trig_mode=wxgui.TRIG_MODE_AUTO,
            y_axis_label='Counts',
        )
        self.tabs.GetPage(3).Add(self.wxgui_scopesink2_2.win)
        self.wxgui_scopesink2_1 = scopesink2.scope_sink_f(
            self.tabs.GetPage(0).GetWin(),
            title='Audio Source',
            sample_rate=samp_rate,
            v_scale=0,
            v_offset=0,
            t_scale=5e-3,
            ac_couple=False,
            xy_mode=False,
            num_inputs=1,
            trig_mode=wxgui.TRIG_MODE_AUTO,
            y_axis_label='Amplitude',
        )
        self.tabs.GetPage(0).Add(self.wxgui_scopesink2_1.win)
        self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
            self.tabs.GetPage(1).GetWin(),
            title='Transmit Signal',
            sample_rate=samp_rate,
            v_scale=0,
            v_offset=0,
            t_scale=5e-3,
            ac_couple=False,
            xy_mode=False,
            num_inputs=1,
            trig_mode=wxgui.TRIG_MODE_NORM,
            y_axis_label='Amplitude',
        )
        self.tabs.GetPage(1).Add(self.wxgui_scopesink2_0.win)
        self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
            self.tabs.GetPage(2).GetWin(),
            baseband_freq=150e3,
            y_per_div=10,
            y_divs=10,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=samp_rate / 8,
            fft_size=512,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title='Transmit Spectrum',
            peak_hold=False,
        )
        self.tabs.GetPage(2).Add(self.wxgui_fftsink2_0.win)
        self.msg_tone = analog.sig_source_f(samp_rate, analog.GR_COS_WAVE, 800,
                                            level_signal, 0)
        _level_carrier_sizer = wx.BoxSizer(wx.VERTICAL)
        self._level_carrier_text_box = forms.text_box(
            parent=self.GetWin(),
            sizer=_level_carrier_sizer,
            value=self.level_carrier,
            callback=self.set_level_carrier,
            label='Carrier',
            converter=forms.float_converter(),
            proportion=0,
        )
        self._level_carrier_slider = forms.slider(
            parent=self.GetWin(),
            sizer=_level_carrier_sizer,
            value=self.level_carrier,
            callback=self.set_level_carrier,
            minimum=0,
            maximum=1,
            num_steps=10,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.GridAdd(_level_carrier_sizer, 0, 10, 1, 10)
        self.interp_fir_filter_xxx_0 = filter.interp_fir_filter_fff(
            30, (audio_taps))
        self.interp_fir_filter_xxx_0.declare_sample_delay(0)
        self.freq_xlating_fir_filter_xxx_0 = filter.freq_xlating_fir_filter_fcc(
            8, (fft_taps), 150e3, samp_rate)
        self.fir_filter_xxx_0 = filter.fir_filter_fcc(2, (taps_rx))
        self.fir_filter_xxx_0.declare_sample_delay(0)
        self.carrier = analog.sig_source_f(samp_rate, analog.GR_COS_WAVE,
                                           150000, level_carrier, 0)
        self.blocks_wavfile_source_0 = blocks.wavfile_source(
            '/home/akio/chop_sample.wav', True)
        self.blocks_wavfile_sink_0 = blocks.wavfile_sink(
            'fading.wav', 1, 48000, 16)
        self.blocks_multiply_xx_0 = blocks.multiply_vff(1)
        self.blocks_multiply_const_vxx_1 = blocks.multiply_const_vff((vol, ))
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff(
            (level_signal * 35, ))
        self.blocks_add_const_vxx_0 = blocks.add_const_vff((transmit_type, ))
        self.blks2_selector_0 = grc_blks2.selector(
            item_size=gr.sizeof_float * 1,
            num_inputs=2,
            num_outputs=1,
            input_index=source,
            output_index=0,
        )
        self.audio_sink_0 = audio.sink(48000, '', True)
        self.analog_am_demod_cf_0 = analog.am_demod_cf(
            channel_rate=samp_rate / 2,
            audio_decim=5,
            audio_pass=10000,
            audio_stop=11000,
        )

        ##################################################
        # Connections
        ##################################################
        self.connect((self.analog_am_demod_cf_0, 0),
                     (self.blocks_multiply_const_vxx_1, 0))
        self.connect((self.blks2_selector_0, 0),
                     (self.blocks_add_const_vxx_0, 0))
        self.connect((self.blks2_selector_0, 0), (self.wxgui_scopesink2_1, 0))
        self.connect((self.blks2_selector_0, 0), (self.wxgui_scopesink2_2, 0))
        self.connect((self.blocks_add_const_vxx_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.interp_fir_filter_xxx_0, 0))
        self.connect((self.blocks_multiply_const_vxx_1, 0),
                     (self.audio_sink_0, 0))
        self.connect((self.blocks_multiply_const_vxx_1, 0),
                     (self.blocks_wavfile_sink_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.fir_filter_xxx_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.freq_xlating_fir_filter_xxx_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.wxgui_scopesink2_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.wxgui_scopesink2_2, 1))
        self.connect((self.blocks_wavfile_source_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.carrier, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.fir_filter_xxx_0, 0),
                     (self.analog_am_demod_cf_0, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_0, 0),
                     (self.wxgui_fftsink2_0, 0))
        self.connect((self.interp_fir_filter_xxx_0, 0),
                     (self.blks2_selector_0, 1))
        self.connect((self.msg_tone, 0), (self.blks2_selector_0, 0))
Example #17
0
    def __init__(self, demod_rate, audio_decimation, deemph_tau):
        """
        Hierarchical block for demodulating a broadcast FM signal.

        The input is the downconverted complex baseband signal (gr_complex).
        The output is two streams of the demodulated audio (float) 0=Left, 1=Right.

        Args:
            demod_rate: input sample rate of complex baseband input. (float)
            audio_decimation: how much to decimate demod_rate to get to audio. (integer)
            deemph_tau: deemphasis ime constant in seconds (75us in US, 50us in EUR). (float)
        """
        gr.hier_block2.__init__(self, "wfm_rcv_pll",
                                # Input signature
                                gr.io_signature(1, 1, gr.sizeof_gr_complex),
                                gr.io_signature(2, 2, gr.sizeof_float))      # Output signature

        if audio_decimation != int(audio_decimation):
            raise ValueError("audio_decimation needs to be an integer")
        audio_decimation = int(audio_decimation)

        ##################################################
        # Variables
        ##################################################
        self.demod_rate = demod_rate
        self.deemph_tau = deemph_tau
        self.stereo_carrier_filter_coeffs = stereo_carrier_filter_coeffs = firdes.band_pass(
            -2.0, demod_rate, 37600, 38400, 400, fft.window.WIN_HAMMING, 6.76)
        self.pilot_carrier_filter_coeffs = pilot_carrier_filter_coeffs = firdes.complex_band_pass(
            1.0, demod_rate, 18980, 19020, 1500, fft.window.WIN_HAMMING, 6.76)
        self.deviation = deviation = 75000
        self.audio_filter_coeffs = audio_filter_coeffs = firdes.low_pass(
            1, demod_rate, 15000, 1500, fft.window.WIN_HAMMING, 6.76)
        self.audio_decim = audio_decim = audio_decimation
        self.audio_rate = audio_rate = demod_rate / audio_decim
        self.samp_delay = samp_delay = (len(
            pilot_carrier_filter_coeffs) - 1) // 2 + (len(stereo_carrier_filter_coeffs) - 1) // 2

        ##################################################
        # Blocks
        ##################################################
        self.pilot_carrier_bpf = filter.fir_filter_fcc(
            1, pilot_carrier_filter_coeffs)
        self.pilot_carrier_bpf.declare_sample_delay(0)
        self.stereo_carrier_bpf = filter.fft_filter_fff(
            1, stereo_carrier_filter_coeffs, 1)
        self.stereo_carrier_bpf.declare_sample_delay(0)
        self.stereo_audio_lpf = filter.fft_filter_fff(
            audio_decim, audio_filter_coeffs, 1)
        self.stereo_audio_lpf.declare_sample_delay(0)
        self.mono_audio_lpf = filter.fft_filter_fff(
            audio_decim, audio_filter_coeffs, 1)
        self.mono_audio_lpf.declare_sample_delay(0)
        self.blocks_stereo_multiply = blocks.multiply_ff(1)
        self.blocks_pilot_multiply = blocks.multiply_cc(1)
        self.blocks_complex_to_imag = blocks.complex_to_imag(1)
        self.blocks_right_sub = blocks.sub_ff(1)
        self.blocks_left_add = blocks.add_ff(1)
        self.analog_quadrature_demod_cf = analog.quadrature_demod_cf(
            demod_rate / (2 * math.pi * deviation))
        self.analog_pll_refout_cc = analog.pll_refout_cc(
            0.001, 2 * math.pi * 19200 / demod_rate, 2 * math.pi * 18800 / demod_rate)
        self.analog_right_fm_deemph = analog.fm_deemph(
            fs=audio_rate, tau=deemph_tau)
        self.analog_left_fm_deemph = analog.fm_deemph(
            fs=audio_rate, tau=deemph_tau)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_float * 1, samp_delay)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.analog_left_fm_deemph, 0), (self, 0))
        self.connect((self.analog_right_fm_deemph, 0), (self, 1))
        self.connect((self.analog_pll_refout_cc, 0),
                     (self.blocks_pilot_multiply, 1))
        self.connect((self.analog_pll_refout_cc, 0),
                     (self.blocks_pilot_multiply, 0))
        self.connect((self.analog_quadrature_demod_cf, 0),
                     (self.blocks_delay_0, 0))
        self.connect((self.blocks_delay_0, 0),
                     (self.blocks_stereo_multiply, 0))
        self.connect((self.blocks_delay_0, 0), (self.mono_audio_lpf, 0))
        self.connect((self.analog_quadrature_demod_cf, 0),
                     (self.pilot_carrier_bpf, 0))
        self.connect((self.blocks_left_add, 0),
                     (self.analog_left_fm_deemph, 0))
        self.connect((self.blocks_right_sub, 0),
                     (self.analog_right_fm_deemph, 0))
        self.connect((self.blocks_complex_to_imag, 0),
                     (self.stereo_carrier_bpf, 0))
        self.connect((self.blocks_pilot_multiply, 0),
                     (self.blocks_complex_to_imag, 0))
        self.connect((self.blocks_stereo_multiply, 0),
                     (self.stereo_audio_lpf, 0))  # L - R path
        self.connect((self.mono_audio_lpf, 0), (self.blocks_left_add, 1))
        self.connect((self.mono_audio_lpf, 0), (self.blocks_right_sub, 0))
        self.connect((self.stereo_audio_lpf, 0), (self.blocks_left_add, 0))
        self.connect((self.stereo_audio_lpf, 0), (self.blocks_right_sub, 1))
        self.connect((self.stereo_carrier_bpf, 0),
                     (self.blocks_stereo_multiply, 1))
        self.connect((self.pilot_carrier_bpf, 0),
                     (self.analog_pll_refout_cc, 0))
        self.connect((self, 0), (self.analog_quadrature_demod_cf, 0))
Example #18
0
    def __init__ (self, demod_rate, audio_decimation):
        """
        Hierarchical block for demodulating a broadcast FM signal.

        The input is the downconverted complex baseband signal
        (gr_complex).  The output is two streams of the demodulated
        audio (float) 0=Left, 1=Right.

        Args:
            demod_rate: input sample rate of complex baseband input. (float)
            audio_decimation: how much to decimate demod_rate to get to audio. (integer)
        """
        gr.hier_block2.__init__(self, "wfm_rcv_fmdet",
                                gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
                                gr.io_signature(2, 2, gr.sizeof_float))      # Output signature
        lowfreq = -125e3 / demod_rate
        highfreq = 125e3 / demod_rate
        audio_rate = demod_rate / audio_decimation

        # We assign to self so that outsiders can grab the demodulator
        # if they need to.  E.g., to plot its output.
        #
        # input: complex; output: float

        self.fm_demod = analog.fmdet_cf(demod_rate, lowfreq, highfreq, 0.05)

        # input: float; output: float
        self.deemph_Left  = fm_deemph(audio_rate)
        self.deemph_Right = fm_deemph(audio_rate)

        # compute FIR filter taps for audio filter
        width_of_transition_band = audio_rate / 32
        audio_coeffs = filter.firdes.low_pass(1.0 ,         # gain
                                              demod_rate,   # sampling rate
                                              15000 ,
                                              width_of_transition_band,
                                              filter.firdes.WIN_HAMMING)

        # input: float; output: float
        self.audio_filter = filter.fir_filter_fff(audio_decimation, audio_coeffs)
        if 1:
            # Pick off the stereo carrier/2 with this filter. It
            # attenuated 10 dB so apply 10 dB gain We pick off the
            # negative frequency half because we want to base band by
            # it!
            ##  NOTE THIS WAS HACKED TO OFFSET INSERTION LOSS DUE TO
            ##  DEEMPHASIS

            stereo_carrier_filter_coeffs = \
                filter.firdes.complex_band_pass(10.0,
                                                demod_rate,
                                                -19020,
                                                -18980,
                                                width_of_transition_band,
                                                filter.firdes.WIN_HAMMING)

            #print "len stereo carrier filter = ",len(stereo_carrier_filter_coeffs)
            #print "stereo carrier filter ", stereo_carrier_filter_coeffs
            #print "width of transition band = ",width_of_transition_band, " audio rate = ", audio_rate

            # Pick off the double side band suppressed carrier
            # Left-Right audio. It is attenuated 10 dB so apply 10 dB
            # gain

            stereo_dsbsc_filter_coeffs = \
                filter.firdes.complex_band_pass(20.0,
                                                demod_rate,
                                                38000-15000 / 2,
                                                38000+15000 / 2,
                                                width_of_transition_band,
                                                filter.firdes.WIN_HAMMING)
            #print "len stereo dsbsc filter = ",len(stereo_dsbsc_filter_coeffs)
            #print "stereo dsbsc filter ", stereo_dsbsc_filter_coeffs

            # construct overlap add filter system from coefficients
            # for stereo carrier
            self.stereo_carrier_filter = \
                filter.fir_filter_fcc(audio_decimation,
                                      stereo_carrier_filter_coeffs)

            # carrier is twice the picked off carrier so arrange to do
            # a commplex multiply
            self.stereo_carrier_generator = blocks.multiply_cc();

            # Pick off the rds signal
            stereo_rds_filter_coeffs = \
                filter.firdes.complex_band_pass(30.0,
                                                demod_rate,
                                                57000 - 1500,
                                                57000 + 1500,
                                                width_of_transition_band,
                                                filter.firdes.WIN_HAMMING)
            #print "len stereo dsbsc filter = ",len(stereo_dsbsc_filter_coeffs)
            #print "stereo dsbsc filter ", stereo_dsbsc_filter_coeffs
            # construct overlap add filter system from coefficients for stereo carrier

            self.rds_signal_filter = \
                filter.fir_filter_fcc(audio_decimation,
                                      stereo_rds_filter_coeffs)
            self.rds_carrier_generator = blocks.multiply_cc();
            self.rds_signal_generator = blocks.multiply_cc();
            self_rds_signal_processor = blocks.null_sink(gr.sizeof_gr_complex);

            loop_bw = 2*math.pi/100.0
            max_freq = -2.0*math.pi*18990/audio_rate;
            min_freq = -2.0*math.pi*19010/audio_rate;
            self.stereo_carrier_pll_recovery = analog.pll_refout_cc(loop_bw,
                                                                    max_freq,
                                                                    min_freq);

            #self.stereo_carrier_pll_recovery.squelch_enable(False)
            ##pll_refout does not have squelch yet, so disabled for
            #now

            # set up mixer (multiplier) to get the L-R signal at
            # baseband

            self.stereo_basebander = blocks.multiply_cc();

            # pick off the real component of the basebanded L-R
            # signal.  The imaginary SHOULD be zero

            self.LmR_real = blocks.complex_to_real();
            self.Make_Left = blocks.add_ff();
            self.Make_Right = blocks.sub_ff();

            self.stereo_dsbsc_filter = \
                filter.fir_filter_fcc(audio_decimation,
                                      stereo_dsbsc_filter_coeffs)


        if 1:

            # send the real signal to complex filter to pick off the
            # carrier and then to one side of a multiplier
            self.connect(self, self.fm_demod, self.stereo_carrier_filter,
                         self.stereo_carrier_pll_recovery,
                         (self.stereo_carrier_generator,0))

            # send the already filtered carrier to the otherside of the carrier
            # the resulting signal from this multiplier is the carrier
            # with correct phase but at -38000 Hz.
            self.connect(self.stereo_carrier_pll_recovery, (self.stereo_carrier_generator,1))

            # send the new carrier to one side of the mixer (multiplier)
            self.connect(self.stereo_carrier_generator, (self.stereo_basebander,0))

            # send the demphasized audio to the DSBSC pick off filter,  the complex
            # DSBSC signal at +38000 Hz is sent to the other side of the mixer/multiplier
            # the result is BASEBANDED DSBSC with phase zero!
            self.connect(self.fm_demod,self.stereo_dsbsc_filter, (self.stereo_basebander,1))

            # Pick off the real part since the imaginary is
            # theoretically zero and then to one side of a summer
            self.connect(self.stereo_basebander, self.LmR_real, (self.Make_Left,0))

            #take the same real part of the DSBSC baseband signal and
            #send it to negative side of a subtracter
            self.connect(self.LmR_real,(self.Make_Right,1))

            # Make rds carrier by taking the squared pilot tone and
            # multiplying by pilot tone
            self.connect(self.stereo_basebander,(self.rds_carrier_generator,0))
            self.connect(self.stereo_carrier_pll_recovery,(self.rds_carrier_generator,1))

            # take signal, filter off rds, send into mixer 0 channel
            self.connect(self.fm_demod,self.rds_signal_filter,(self.rds_signal_generator,0))

            # take rds_carrier_generator output and send into mixer 1
            # channel
            self.connect(self.rds_carrier_generator,(self.rds_signal_generator,1))

            # send basebanded rds signal and send into "processor"
            # which for now is a null sink
            self.connect(self.rds_signal_generator,self_rds_signal_processor)


        if 1:
            # pick off the audio, L+R that is what we used to have and
            # send it to the summer
            self.connect(self.fm_demod, self.audio_filter, (self.Make_Left, 1))

            # take the picked off L+R audio and send it to the PLUS
            # side of the subtractor
            self.connect(self.audio_filter,(self.Make_Right, 0))

            # The result of  Make_Left  gets    (L+R) +  (L-R) and results in 2*L
            # The result of Make_Right gets  (L+R) - (L-R) and results in 2*R
            self.connect(self.Make_Left , self.deemph_Left, (self, 0))
            self.connect(self.Make_Right, self.deemph_Right, (self, 1))
Example #19
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="Top Block")
        _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
        self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

        ##################################################
        # Variables
        ##################################################
        self.symbol_rate = symbol_rate = 200
        self.samp_rate = samp_rate = 8000
        self.samp_per_sym = samp_per_sym = samp_rate/symbol_rate
        self.fsk_deviation_hz = fsk_deviation_hz = symbol_rate * 0.5

        ##################################################
        # Blocks
        ##################################################
        self.wxgui_waterfallsink2_0_0 = waterfallsink2.waterfall_sink_f(
        	self.GetWin(),
        	baseband_freq=0,
        	dynamic_range=100,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=samp_rate,
        	fft_size=512,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="Waterfall Plot",
        )
        self.Add(self.wxgui_waterfallsink2_0_0.win)
        self.wxgui_scopesink2_1 = scopesink2.scope_sink_f(
        	self.GetWin(),
        	title="Scope Plot",
        	sample_rate=samp_rate,
        	v_scale=0,
        	v_offset=0,
        	t_scale=0.02,
        	ac_couple=False,
        	xy_mode=False,
        	num_inputs=1,
        	trig_mode=wxgui.TRIG_MODE_AUTO,
        	y_axis_label="Counts",
        )
        self.Add(self.wxgui_scopesink2_1.win)
        self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(samp_per_sym*(1+0.0), 0.25*0.175*0.175, 0.5, 0.175, 0.005)
        self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
        self.blocks_pack_k_bits_bb_0 = blocks.pack_k_bits_bb(8)
        self.blocks_file_sink_0_0 = blocks.file_sink(gr.sizeof_char*1, "/tmp/msk-bin", False)
        self.blocks_file_sink_0_0.set_unbuffered(True)
        self.blocks_complex_to_float_0 = blocks.complex_to_float(1)
        self.blocks_add_const_vxx_0 = blocks.add_const_vff((-79, ))
        self.band_pass_filter_0 = filter.fir_filter_fcc(1, firdes.complex_band_pass(
        	1, samp_rate, 750, 1250, 10, firdes.WIN_HAMMING, 6.76))
        self.audio_source_0 = audio.source(samp_rate, "dsp0", True)
        self.analog_quadrature_demod_cf_0 = analog.quadrature_demod_cf(samp_rate/(2*math.pi*fsk_deviation_hz/8.0))

        ##################################################
        # Connections
        ##################################################
        self.connect((self.audio_source_0, 0), (self.band_pass_filter_0, 0))
        self.connect((self.band_pass_filter_0, 0), (self.analog_quadrature_demod_cf_0, 0))
        self.connect((self.analog_quadrature_demod_cf_0, 0), (self.digital_clock_recovery_mm_xx_0, 0))
        self.connect((self.analog_quadrature_demod_cf_0, 0), (self.wxgui_scopesink2_1, 0))
        self.connect((self.digital_clock_recovery_mm_xx_0, 0), (self.blocks_add_const_vxx_0, 0))
        self.connect((self.blocks_add_const_vxx_0, 0), (self.digital_binary_slicer_fb_0, 0))
        self.connect((self.digital_binary_slicer_fb_0, 0), (self.blocks_pack_k_bits_bb_0, 0))
        self.connect((self.blocks_pack_k_bits_bb_0, 0), (self.blocks_file_sink_0_0, 0))
        self.connect((self.band_pass_filter_0, 0), (self.blocks_complex_to_float_0, 0))
        self.connect((self.blocks_complex_to_float_0, 0), (self.wxgui_waterfallsink2_0_0, 0))
Example #20
0
	def connect_audio_stage(self):
		demod_rate = self.demod_rate
		stereo_rate = self.post_demod_rate
		audio_rate = self.audio_rate
		normalizer = 2 * math.pi / stereo_rate
		pilot_tone = 19000
		pilot_low = pilot_tone * 0.9
		pilot_high = pilot_tone * 1.1

		def make_audio_filter():
			return grfilter.fir_filter_fff(
				1,  # decimation
				firdes.low_pass(
					1.0,
					stereo_rate,
					15000,
					5000,
					firdes.WIN_HAMMING))

		stereo_pilot_filter = grfilter.fir_filter_fcc(
			1,  # decimation
			firdes.complex_band_pass(
				1.0,
				stereo_rate,
				pilot_low,
				pilot_high,
				300))  # TODO magic number from gqrx
		stereo_pilot_pll = analog.pll_refout_cc(
			0.001,  # TODO magic number from gqrx
			normalizer * pilot_high,
			normalizer * pilot_low)
		stereo_pilot_doubler = blocks.multiply_cc()
		stereo_pilot_out = blocks.complex_to_imag()
		difference_channel_mixer = blocks.multiply_ff()
		difference_channel_filter = make_audio_filter()
		difference_real = blocks.complex_to_real(1)
		mono_channel_filter = make_audio_filter()
		resamplerL = self._make_resampler()
		resamplerR = self._make_resampler()
		mixL = blocks.add_ff(1)
		mixR = blocks.sub_ff(1)
		
		# connections
		if self.audio_filter:
			self.connect(self.demod_block, mono_channel_filter)
			mono = mono_channel_filter
		else:
			mono = self.demod_block

		if self.stereo:
			# stereo pilot tone tracker
			self.connect(
				self.demod_block,
				stereo_pilot_filter,
				stereo_pilot_pll)
			self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 0))
			self.connect(stereo_pilot_pll, (stereo_pilot_doubler, 1))
			self.connect(stereo_pilot_doubler, stereo_pilot_out)
		
			# pick out stereo left-right difference channel
			self.connect(self.demod_block, (difference_channel_mixer, 0))
			self.connect(stereo_pilot_out, (difference_channel_mixer, 1))
			self.connect(difference_channel_mixer, difference_channel_filter)
		
			# recover left/right channels
			self.connect(difference_channel_filter, (mixL, 1))
			self.connect(difference_channel_filter, (mixR, 1))
			self.connect(mono, (mixL, 0), resamplerL)
			self.connect(mono, (mixR, 0), resamplerR)
			self.connect_audio_output(resamplerL, resamplerR)
		else:
			self.connect(mono, resamplerL)
			self.connect_audio_output(resamplerL, resamplerL)
Example #21
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="Top Block")
        _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
        self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

        ##################################################
        # Variables
        ##################################################
        self.symbol_rate = symbol_rate = 200
        self.samp_rate = samp_rate = 8000
        self.samp_per_sym = samp_per_sym = samp_rate / symbol_rate
        self.fsk_deviation_hz = fsk_deviation_hz = symbol_rate * 0.5

        ##################################################
        # Blocks
        ##################################################
        self.wxgui_waterfallsink2_0_0 = waterfallsink2.waterfall_sink_f(
            self.GetWin(),
            baseband_freq=0,
            dynamic_range=100,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=samp_rate,
            fft_size=512,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title="Waterfall Plot",
        )
        self.Add(self.wxgui_waterfallsink2_0_0.win)
        self.wxgui_scopesink2_1 = scopesink2.scope_sink_f(
            self.GetWin(),
            title="Scope Plot",
            sample_rate=samp_rate,
            v_scale=0,
            v_offset=0,
            t_scale=0.02,
            ac_couple=False,
            xy_mode=False,
            num_inputs=1,
            trig_mode=wxgui.TRIG_MODE_AUTO,
            y_axis_label="Counts",
        )
        self.Add(self.wxgui_scopesink2_1.win)
        self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(
            samp_per_sym * (1 + 0.0), 0.25 * 0.175 * 0.175, 0.5, 0.175, 0.005)
        self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb()
        self.blocks_pack_k_bits_bb_0 = blocks.pack_k_bits_bb(8)
        self.blocks_file_sink_0_0 = blocks.file_sink(gr.sizeof_char * 1,
                                                     "/tmp/msk-bin", False)
        self.blocks_file_sink_0_0.set_unbuffered(True)
        self.blocks_complex_to_float_0 = blocks.complex_to_float(1)
        self.blocks_add_const_vxx_0 = blocks.add_const_vff((-79, ))
        self.band_pass_filter_0 = filter.fir_filter_fcc(
            1,
            firdes.complex_band_pass(1, samp_rate, 750, 1250, 10,
                                     firdes.WIN_HAMMING, 6.76))
        self.audio_source_0 = audio.source(samp_rate, "dsp0", True)
        self.analog_quadrature_demod_cf_0 = analog.quadrature_demod_cf(
            samp_rate / (2 * math.pi * fsk_deviation_hz / 8.0))

        ##################################################
        # Connections
        ##################################################
        self.connect((self.audio_source_0, 0), (self.band_pass_filter_0, 0))
        self.connect((self.band_pass_filter_0, 0),
                     (self.analog_quadrature_demod_cf_0, 0))
        self.connect((self.analog_quadrature_demod_cf_0, 0),
                     (self.digital_clock_recovery_mm_xx_0, 0))
        self.connect((self.analog_quadrature_demod_cf_0, 0),
                     (self.wxgui_scopesink2_1, 0))
        self.connect((self.digital_clock_recovery_mm_xx_0, 0),
                     (self.blocks_add_const_vxx_0, 0))
        self.connect((self.blocks_add_const_vxx_0, 0),
                     (self.digital_binary_slicer_fb_0, 0))
        self.connect((self.digital_binary_slicer_fb_0, 0),
                     (self.blocks_pack_k_bits_bb_0, 0))
        self.connect((self.blocks_pack_k_bits_bb_0, 0),
                     (self.blocks_file_sink_0_0, 0))
        self.connect((self.band_pass_filter_0, 0),
                     (self.blocks_complex_to_float_0, 0))
        self.connect((self.blocks_complex_to_float_0, 0),
                     (self.wxgui_waterfallsink2_0_0, 0))
Example #22
0
    def __init__(self, demod_rate, audio_decimation):
        """
        Hierarchical block for demodulating a broadcast FM signal.

        The input is the downconverted complex baseband signal (gr_complex).
        The output is two streams of the demodulated audio (float) 0=Left, 1=Right.

        Args:
            demod_rate: input sample rate of complex baseband input. (float)
            audio_decimation: how much to decimate demod_rate to get to audio. (integer)
        """
        gr.hier_block2.__init__(self, "wfm_rcv_pll",
                                gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
                                gr.io_signature(2, 2, gr.sizeof_float))      # Output signature
        bandwidth = 250e3
        audio_rate = demod_rate / audio_decimation


        # We assign to self so that outsiders can grab the demodulator
        # if they need to.  E.g., to plot its output.
        #
        # input: complex; output: float
        loop_bw = 2*math.pi/100.0
        max_freq = 2.0*math.pi*90e3/demod_rate
        self.fm_demod = analog.pll_freqdet_cf(loop_bw, max_freq,-max_freq)

        # input: float; output: float
        self.deemph_Left  = fm_deemph(audio_rate)
        self.deemph_Right = fm_deemph(audio_rate)

        # compute FIR filter taps for audio filter
        width_of_transition_band = audio_rate / 32
        audio_coeffs = filter.firdes.low_pass(1.0 ,         # gain
                                              demod_rate,      # sampling rate
                                              15000 ,
                                              width_of_transition_band,
                                              filter.firdes.WIN_HAMMING)
        # input: float; output: float
        self.audio_filter = filter.fir_filter_fff(audio_decimation, audio_coeffs)
        if 1:
            # Pick off the stereo carrier/2 with this filter. It attenuated 10 dB so apply 10 dB gain
            # We pick off the negative frequency half because we want to base band by it!
            ##  NOTE  THIS WAS HACKED TO OFFSET INSERTION LOSS DUE TO DEEMPHASIS

            stereo_carrier_filter_coeffs = \
                filter.firdes.complex_band_pass(10.0,
                                                demod_rate,
                                                -19020,
                                                -18980,
                                                width_of_transition_band,
                                                filter.firdes.WIN_HAMMING)

            #print "len stereo carrier filter = ",len(stereo_carrier_filter_coeffs)
            #print "stereo carrier filter ", stereo_carrier_filter_coeffs
            #print "width of transition band = ",width_of_transition_band, " audio rate = ", audio_rate

            # Pick off the double side band suppressed carrier Left-Right audio. It is attenuated 10 dB so apply 10 dB gain

            stereo_dsbsc_filter_coeffs = \
                filter.firdes.complex_band_pass(20.0,
                                                demod_rate,
                                                38000-15000 / 2,
                                                38000+15000 / 2,
                                                width_of_transition_band,
                                                filter.firdes.WIN_HAMMING)
            #print "len stereo dsbsc filter = ",len(stereo_dsbsc_filter_coeffs)
            #print "stereo dsbsc filter ", stereo_dsbsc_filter_coeffs
            # construct overlap add filter system from coefficients for stereo carrier

            self.stereo_carrier_filter = \
                filter.fir_filter_fcc(audio_decimation, stereo_carrier_filter_coeffs)

            # carrier is twice the picked off carrier so arrange to do a complex multiply

            self.stereo_carrier_generator = blocks.multiply_cc();

            # Pick off the rds signal

            stereo_rds_filter_coeffs = \
                filter.firdes.complex_band_pass(30.0,
                                                demod_rate,
                                                57000 - 1500,
                                                57000 + 1500,
                                                width_of_transition_band,
                                                filter.firdes.WIN_HAMMING)
            #print "len stereo dsbsc filter = ",len(stereo_dsbsc_filter_coeffs)
            #print "stereo dsbsc filter ", stereo_dsbsc_filter_coeffs
            # construct overlap add filter system from coefficients for stereo carrier

            self.rds_signal_filter = \
                filter.fir_filter_fcc(audio_decimation, stereo_rds_filter_coeffs)

            self.rds_carrier_generator = blocks.multiply_cc();
            self.rds_signal_generator = blocks.multiply_cc();
            self_rds_signal_processor = blocks.null_sink(gr.sizeof_gr_complex);

            loop_bw = 2*math.pi/100.0
            max_freq = -2.0*math.pi*18990/audio_rate;
            min_freq = -2.0*math.pi*19010/audio_rate;

            self.stereo_carrier_pll_recovery = \
                analog.pll_refout_cc(loop_bw, max_freq, min_freq);
            #self.stereo_carrier_pll_recovery.squelch_enable(False) #pll_refout does not have squelch yet, so disabled for now

            # set up mixer (multiplier) to get the L-R signal at baseband

            self.stereo_basebander = blocks.multiply_cc();

            # pick off the real component of the basebanded L-R signal.  The imaginary SHOULD be zero

            self.LmR_real = blocks.complex_to_real();
            self.Make_Left = blocks.add_ff();
            self.Make_Right = blocks.sub_ff();

            self.stereo_dsbsc_filter = \
                filter.fir_filter_fcc(audio_decimation, stereo_dsbsc_filter_coeffs)

        if 1:

            # send the real signal to complex filter to pick off the carrier and then to one side of a multiplier
            self.connect(self, self.fm_demod, self.stereo_carrier_filter,
                         self.stereo_carrier_pll_recovery, (self.stereo_carrier_generator,0))
            # send the already filtered carrier to the otherside of the carrier
            self.connect(self.stereo_carrier_pll_recovery, (self.stereo_carrier_generator,1))
            # the resulting signal from this multiplier is the carrier with correct phase but at -38000 Hz.

            # send the new carrier to one side of the mixer (multiplier)
            self.connect(self.stereo_carrier_generator, (self.stereo_basebander,0))
            # send the demphasized audio to the DSBSC pick off filter,  the complex
            # DSBSC signal at +38000 Hz is sent to the other side of the mixer/multiplier
            self.connect(self.fm_demod,self.stereo_dsbsc_filter, (self.stereo_basebander,1))
            # the result is BASEBANDED DSBSC with phase zero!

            # Pick off the real part since the imaginary is theoretically zero and then to one side of a summer
            self.connect(self.stereo_basebander, self.LmR_real, (self.Make_Left,0))
            #take the same real part of the DSBSC baseband signal and send it to negative side of a subtracter
            self.connect(self.LmR_real,(self.Make_Right,1))

            # Make rds carrier by taking the squared pilot tone and multiplying by pilot tone
            self.connect(self.stereo_basebander,(self.rds_carrier_generator,0))
            self.connect(self.stereo_carrier_pll_recovery,(self.rds_carrier_generator,1))
            # take signal, filter off rds,  send into mixer 0 channel
            self.connect(self.fm_demod,self.rds_signal_filter,(self.rds_signal_generator,0))
            # take rds_carrier_generator output and send into mixer 1 channel
            self.connect(self.rds_carrier_generator,(self.rds_signal_generator,1))
            # send basebanded rds signal and send into "processor" which for now is a null sink
            self.connect(self.rds_signal_generator,self_rds_signal_processor)


        if 1:
            # pick off the audio, L+R that is what we used to have and send it to the summer
            self.connect(self.fm_demod, self.audio_filter, (self.Make_Left, 1))
            # take the picked off L+R audio and send it to the PLUS side of the subtractor
            self.connect(self.audio_filter,(self.Make_Right, 0))
            # The result of  Make_Left  gets    (L+R) +  (L-R) and results in 2*L
            # The result of Make_Right gets  (L+R) - (L-R) and results in 2*R
            self.connect(self.Make_Left , self.deemph_Left, (self, 0))
            self.connect(self.Make_Right, self.deemph_Right, (self, 1))
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="Vor Receive Realtime Clean")
        _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
        self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

        ##################################################
        # Variables
        ##################################################
        self.morse_vol = morse_vol = 10
        self.samp_rate = samp_rate = 32000
        self.rtl_gain = rtl_gain = 42
        self.rtl_freq = rtl_freq = 115.5e6+64
        self.morse_gain = morse_gain = pow(10,morse_vol/10)
        self.morse_amp_level = morse_amp_level = 0

        ##################################################
        # Blocks
        ##################################################
        self.wxgui_scopesink2_1_0_0 = scopesink2.scope_sink_f(
        	self.GetWin(),
        	title='Morse',
        	sample_rate=samp_rate/(1600),
        	v_scale=0,
        	v_offset=0,
        	t_scale=0,
        	ac_couple=False,
        	xy_mode=False,
        	num_inputs=1,
        	trig_mode=wxgui.TRIG_MODE_STRIPCHART,
        	y_axis_label='Amp',
        )
        self.Add(self.wxgui_scopesink2_1_0_0.win)
        self.wxgui_scopesink2_0 = scopesink2.scope_sink_f(
        	self.GetWin(),
        	title='Scope Plot',
        	sample_rate=samp_rate,
        	v_scale=0,
        	v_offset=0,
        	t_scale=0.02,
        	ac_couple=False,
        	xy_mode=False,
        	num_inputs=2,
        	trig_mode=wxgui.TRIG_MODE_AUTO,
        	y_axis_label='Counts',
        )
        self.Add(self.wxgui_scopesink2_0.win)
        self.wxgui_numbersink2_1 = numbersink2.number_sink_f(
        	self.GetWin(),
        	unit='Units',
        	minval=0,
        	maxval=360,
        	factor=1.0,
        	decimal_places=10,
        	ref_level=0,
        	sample_rate=1,
        	number_rate=15,
        	average=False,
        	avg_alpha=None,
        	label='Number Plot',
        	peak_hold=False,
        	show_gauge=False,
        )
        self.Add(self.wxgui_numbersink2_1.win)
        _morse_vol_sizer = wx.BoxSizer(wx.VERTICAL)
        self._morse_vol_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_morse_vol_sizer,
        	value=self.morse_vol,
        	callback=self.set_morse_vol,
        	label='Morse Volume (dB):',
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._morse_vol_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_morse_vol_sizer,
        	value=self.morse_vol,
        	callback=self.set_morse_vol,
        	minimum=-25,
        	maximum=25,
        	num_steps=1000,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.Add(_morse_vol_sizer)

        def _morse_amp_level_probe():
            while True:
                val = self.morse_amp.level()
                try:
                    self.set_morse_amp_level(val)
                except AttributeError:
                    pass
                time.sleep(1.0 / (25))
        _morse_amp_level_thread = threading.Thread(target=_morse_amp_level_probe)
        _morse_amp_level_thread.daemon = True
        _morse_amp_level_thread.start()

        self.low_pass_filter_0_1_0 = filter.fir_filter_fff(1, firdes.low_pass(
        	1, samp_rate, 1000, 500, firdes.WIN_HAMMING, 6.76))
        self.low_pass_filter_0_1 = filter.fir_filter_ccf(1, firdes.low_pass(
        	1, samp_rate, 1000, 500, firdes.WIN_HAMMING, 6.76))
        self.iio_modulo_const_ff_0 = iio.modulo_const_ff(360, 1)
        self.goertzel_fc_0_0 = fft.goertzel_fc(samp_rate, 3200, 30)
        self.goertzel_fc_0 = fft.goertzel_fc(samp_rate, 3200, 30)
        self.fir_filter_xxx_0_0 = filter.fir_filter_fff(1, (filter.optfir.low_pass(1, samp_rate, 100, 200, 0.1,  60)))
        self.fir_filter_xxx_0_0.declare_sample_delay(0)
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_1 = blocks.multiply_const_vff((-180/pi, ))
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vff((morse_gain, ))
        self.blocks_multiply_conjugate_cc_0 = blocks.multiply_conjugate_cc(1)
        self.blocks_integrate_xx_1 = blocks.integrate_ff(1600, 1)
        self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
        self.blocks_file_source_0_0_0 = blocks.file_source(gr.sizeof_gr_complex*1, '/tmp/vor_simulation.cfile', False)
        self.blocks_complex_to_mag_squared_0 = blocks.complex_to_mag_squared(1)
        self.blocks_complex_to_arg_0 = blocks.complex_to_arg(1)
        self.blocks_add_const_vxx_1 = blocks.add_const_vff((360, ))
        self.band_pass_filter_0 = filter.fir_filter_fcc(1, firdes.complex_band_pass(
        	1, samp_rate, 1010, 1030, 100, firdes.WIN_HAMMING, 6.76))
        self.audio_sink_0_0 = audio.sink(samp_rate, '', True)
        self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, -9960, 1, 0)
        self.analog_fm_demod_cf_0 = analog.fm_demod_cf(
        	channel_rate=samp_rate,
        	audio_decim=1,
        	deviation=1000,
        	audio_pass=100,
        	audio_stop=200,
        	gain=1.0,
        	tau=75e-6,
        )
        self.analog_am_demod_cf_0 = analog.am_demod_cf(
        	channel_rate=samp_rate,
        	audio_decim=1,
        	audio_pass=12000,
        	audio_stop=13000,
        )

        ##################################################
        # Connections
        ##################################################
        self.connect((self.analog_am_demod_cf_0, 0), (self.band_pass_filter_0, 0))
        self.connect((self.analog_am_demod_cf_0, 0), (self.blocks_float_to_complex_0, 0))
        self.connect((self.analog_am_demod_cf_0, 0), (self.low_pass_filter_0_1_0, 0))
        self.connect((self.analog_fm_demod_cf_0, 0), (self.goertzel_fc_0_0, 0))
        self.connect((self.analog_fm_demod_cf_0, 0), (self.wxgui_scopesink2_0, 1))
        self.connect((self.analog_sig_source_x_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.band_pass_filter_0, 0), (self.blocks_complex_to_mag_squared_0, 0))
        self.connect((self.blocks_add_const_vxx_1, 0), (self.iio_modulo_const_ff_0, 0))
        self.connect((self.blocks_complex_to_arg_0, 0), (self.blocks_multiply_const_vxx_1, 0))
        self.connect((self.blocks_complex_to_mag_squared_0, 0), (self.blocks_integrate_xx_1, 0))
        self.connect((self.blocks_complex_to_mag_squared_0, 0), (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.blocks_file_source_0_0_0, 0), (self.blocks_throttle_0, 0))
        self.connect((self.blocks_float_to_complex_0, 0), (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_integrate_xx_1, 0), (self.wxgui_scopesink2_1_0_0, 0))
        self.connect((self.blocks_multiply_conjugate_cc_0, 0), (self.blocks_complex_to_arg_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.audio_sink_0_0, 0))
        self.connect((self.blocks_multiply_const_vxx_1, 0), (self.blocks_add_const_vxx_1, 0))
        self.connect((self.blocks_multiply_xx_0, 0), (self.low_pass_filter_0_1, 0))
        self.connect((self.blocks_throttle_0, 0), (self.analog_am_demod_cf_0, 0))
        self.connect((self.fir_filter_xxx_0_0, 0), (self.goertzel_fc_0, 0))
        self.connect((self.fir_filter_xxx_0_0, 0), (self.wxgui_scopesink2_0, 0))
        self.connect((self.goertzel_fc_0, 0), (self.blocks_multiply_conjugate_cc_0, 0))
        self.connect((self.goertzel_fc_0_0, 0), (self.blocks_multiply_conjugate_cc_0, 1))
        self.connect((self.iio_modulo_const_ff_0, 0), (self.wxgui_numbersink2_1, 0))
        self.connect((self.low_pass_filter_0_1, 0), (self.analog_fm_demod_cf_0, 0))
        self.connect((self.low_pass_filter_0_1_0, 0), (self.fir_filter_xxx_0_0, 0))