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@@ -29,26 +29,25 @@ class fm_radio(gr.top_block):
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channel_width_hertz = 250000
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audio_sample_rate_hertz = 48000
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- self.rtlsdr_source_0 = osmosdr.source()
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- self.rtlsdr_source_0.set_sample_rate(samp_rate)
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- self.rtlsdr_source_0.set_center_freq((98.3 * 1e6), 0)
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- self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
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+ rtlsdr_source = osmosdr.source()
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+ rtlsdr_source.set_sample_rate(samp_rate)
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+ rtlsdr_source.set_center_freq((98.3 * 1e6), 0)
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+ resampler = filter.rational_resampler_fff(
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interpolation=audio_sample_rate_hertz, decimation=channel_width_hertz
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)
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- self.low_pass_filter_0 = filter.fir_filter_ccf(
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+ low_pass_filter = filter.fir_filter_ccf(
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(int(samp_rate / channel_width_hertz)),
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firdes.low_pass(2, samp_rate, 100000, 10000, window.WIN_KAISER, 6.76),
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)
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- self.audio_sink_0 = audio.sink(audio_sample_rate_hertz, "", True)
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- self.analog_wfm_rcv_0 = analog.wfm_rcv(
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- quad_rate=channel_width_hertz,
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- audio_decimation=1,
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+ audio_sink = audio.sink(audio_sample_rate_hertz, "", True)
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+ wbfm_demodulator = analog.wfm_rcv(
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+ quad_rate=channel_width_hertz, audio_decimation=1
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)
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- self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_0, 0))
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- self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0, 0))
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- self.connect((self.rational_resampler_xxx_0, 0), (self.audio_sink_0, 0))
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- self.connect((self.rtlsdr_source_0, 0), (self.low_pass_filter_0, 0))
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+ self.connect((wbfm_demodulator, 0), (resampler, 0))
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+ self.connect((low_pass_filter, 0), (wbfm_demodulator, 0))
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+ self.connect((resampler, 0), (audio_sink, 0))
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+ self.connect((rtlsdr_source, 0), (low_pass_filter, 0))
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def main(top_block_cls=fm_radio, options=None):
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