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
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
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)
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)
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))
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))
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")
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))
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)
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))
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))
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))
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))
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))
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))
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))
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))
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)
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))
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))