def __init__(self):
gr.top_block.__init__(self)
##################################################
# Variables
##################################################
self.signal_freq = signal_freq = 5000
self.samp_rate = samp_rate = 48000
self.bw = bw = 200
##################################################
# Blocks
##################################################
self.gr_probe_ref = gr.probe_signal_f()
self.gr_probe_mag = gr.probe_signal_f()
self.gr_probe_arg = gr.probe_signal_f()
self.gr_nlog10_ff_ref = gr.nlog10_ff(1, 1, 0)
self.gr_nlog10_ff_0 = gr.nlog10_ff(1, 1, 0)
self.gr_divide_xx_0 = gr.divide_cc(1)
self.gr_complex_to_mag_ref = gr.complex_to_mag(1)
self.gr_complex_to_mag_0 = gr.complex_to_mag(1)
self.gr_complex_to_arg_0 = gr.complex_to_arg(1)
self.band_pass_filter_0_0 = gr.fir_filter_fcc(
1,
firdes.complex_band_pass(
1, samp_rate, signal_freq - bw / 2, signal_freq + bw / 2, 100, firdes.WIN_BLACKMAN, 6.76
),
)
self.band_pass_filter_0 = gr.fir_filter_fcc(
1,
firdes.complex_band_pass(
1, samp_rate, signal_freq - bw / 2, signal_freq + bw / 2, 100, firdes.WIN_BLACKMAN, 6.76
),
)
self.audio_source_0 = audio.source(samp_rate, "", True)
##################################################
# Connections
##################################################
self.connect((self.band_pass_filter_0_0, 0), (self.gr_complex_to_mag_0, 0))
self.connect((self.gr_complex_to_mag_0, 0), (self.gr_nlog10_ff_0, 0))
self.connect((self.gr_divide_xx_0, 0), (self.gr_complex_to_arg_0, 0))
self.connect((self.band_pass_filter_0_0, 0), (self.gr_divide_xx_0, 0))
self.connect((self.band_pass_filter_0, 0), (self.gr_divide_xx_0, 1))
self.connect((self.audio_source_0, 1), (self.band_pass_filter_0_0, 0))
self.connect((self.audio_source_0, 0), (self.band_pass_filter_0, 0))
self.connect((self.gr_nlog10_ff_0, 0), (self.gr_probe_mag, 0))
self.connect((self.gr_complex_to_arg_0, 0), (self.gr_probe_arg, 0))
self.connect((self.band_pass_filter_0, 0), (self.gr_complex_to_mag_ref, 0))
self.connect((self.gr_complex_to_mag_ref, 0), (self.gr_nlog10_ff_ref, 0))
self.connect((self.gr_nlog10_ff_ref, 0), (self.gr_probe_ref, 0))
def set_signal_freq(self, signal_freq):
self.signal_freq = signal_freq
self.band_pass_filter_0.set_taps(
firdes.complex_band_pass(
1,
self.samp_rate,
self.signal_freq - self.bw / 2,
self.signal_freq + self.bw / 2,
100,
firdes.WIN_BLACKMAN,
6.76,
)
)
self.band_pass_filter_0_0.set_taps(
firdes.complex_band_pass(
1,
self.samp_rate,
self.signal_freq - self.bw / 2,
self.signal_freq + self.bw / 2,
100,
firdes.WIN_BLACKMAN,
6.76,
)
)
def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="Audio Fft 2") ################################################## # Variables ################################################## self.samp_rate = samp_rate = 48000 ################################################## # Blocks ################################################## self.wxgui_numbersink2_0_0 = numbersink2.number_sink_f( self.GetWin(), unit="deg", minval=-90, maxval=90, factor=90/3.14159, decimal_places=10, ref_level=0, sample_rate=samp_rate, number_rate=15, average=False, avg_alpha=None, label="Angle", peak_hold=False, show_gauge=True, ) self.Add(self.wxgui_numbersink2_0_0.win) self.wxgui_numbersink2_0 = numbersink2.number_sink_f( self.GetWin(), unit="mag", minval=-100, maxval=0, factor=20, decimal_places=10, ref_level=0, sample_rate=samp_rate, number_rate=15, average=False, avg_alpha=None, label="Magnitude", peak_hold=False, show_gauge=True, ) self.Add(self.wxgui_numbersink2_0.win) self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c( self.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="Reflect", peak_hold=False, win=window.hamming, ) self.Add(self.wxgui_fftsink2_0_0.win) self.wxgui_fftsink2_0 = fftsink2.fft_sink_c( self.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="Reference", peak_hold=False, win=window.hamming, ) self.Add(self.wxgui_fftsink2_0.win) self.gr_nlog10_ff_0 = gr.nlog10_ff(1, 1, 0) self.gr_divide_xx_0 = gr.divide_cc(1) self.gr_complex_to_mag_0 = gr.complex_to_mag(1) self.gr_complex_to_arg_0 = gr.complex_to_arg(1) self.band_pass_filter_0_0 = gr.fir_filter_fcc(1, firdes.complex_band_pass( 1, samp_rate, 4.8e3, 5.2e3, 100, firdes.WIN_HAMMING, 6.76)) self.band_pass_filter_0 = gr.fir_filter_fcc(1, firdes.complex_band_pass( 1, samp_rate, 4.8e3, 5.2e3, 100, firdes.WIN_HAMMING, 6.76)) self.audio_source_0 = audio.source(samp_rate, "", True) ################################################## # Connections ################################################## self.connect((self.audio_source_0, 0), (self.band_pass_filter_0, 0)) self.connect((self.band_pass_filter_0, 0), (self.wxgui_fftsink2_0, 0)) self.connect((self.audio_source_0, 1), (self.band_pass_filter_0_0, 0)) self.connect((self.band_pass_filter_0_0, 0), (self.wxgui_fftsink2_0_0, 0)) self.connect((self.band_pass_filter_0, 0), (self.gr_divide_xx_0, 0)) self.connect((self.band_pass_filter_0_0, 0), (self.gr_divide_xx_0, 1)) self.connect((self.gr_divide_xx_0, 0), (self.gr_complex_to_arg_0, 0)) self.connect((self.gr_complex_to_arg_0, 0), (self.wxgui_numbersink2_0_0, 0)) self.connect((self.gr_complex_to_mag_0, 0), (self.gr_nlog10_ff_0, 0)) self.connect((self.gr_nlog10_ff_0, 0), (self.wxgui_numbersink2_0, 0)) self.connect((self.band_pass_filter_0_0, 0), (self.gr_complex_to_mag_0, 0))
def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate self.band_pass_filter_0.set_taps(firdes.complex_band_pass(1, self.samp_rate, 4.8e3, 5.2e3, 100, firdes.WIN_HAMMING, 6.76)) self.wxgui_fftsink2_0.set_sample_rate(self.samp_rate) self.wxgui_fftsink2_0_0.set_sample_rate(self.samp_rate) self.band_pass_filter_0_0.set_taps(firdes.complex_band_pass(1, self.samp_rate, 4.8e3, 5.2e3, 100, firdes.WIN_HAMMING, 6.76))