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https://github.com/romanz/amodem.git
synced 2026-03-17 15:16:00 +08:00
remove not needed except
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@@ -249,39 +249,36 @@ def iread(fd, skip):
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def main(args):
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log.info('Running MODEM @ {:.1f} kbps'.format(modem.modem_bps / 1e3))
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signal = iread(args.input, args.skip)
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size = 0
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signal, amplitude = detect(signal, config.Fc)
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bits = receive(signal, modem.freqs, gain=1.0/amplitude)
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try:
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log.info('Running MODEM @ {:.1f} kbps'.format(modem.modem_bps / 1e3))
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for chunk in decode(bits):
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args.output.write(chunk)
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size = size + len(chunk)
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except Exception:
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log.exception('Decoding failed')
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signal = iread(args.input, args.skip)
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duration = time.time() - stats['rx_start']
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audio_time = stats['rx_bits'] / float(modem.modem_bps)
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log.debug('Demodulated %.3f kB @ %.3f seconds (%.1f%% realtime)',
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stats['rx_bits'] / 8e3, duration, 100 * duration / audio_time)
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size = 0
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signal, amplitude = detect(signal, config.Fc)
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bits = receive(signal, modem.freqs, gain=1.0/amplitude)
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try:
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for chunk in decode(bits):
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args.output.write(chunk)
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size = size + len(chunk)
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except Exception:
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log.exception('Decoding failed')
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log.info('Received %.3f kB @ %.3f seconds = %.3f kB/s',
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size * 1e-3, duration, size * 1e-3 / duration)
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duration = time.time() - stats['rx_start']
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audio_time = stats['rx_bits'] / float(modem.modem_bps)
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log.debug('Demodulated %.3f kB @ %.3f seconds (%.1f%% realtime)',
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stats['rx_bits'] / 8e3, duration, 100 * duration / audio_time)
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pylab.figure()
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symbol_list = np.array(stats['symbol_list'])
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for i, freq in enumerate(modem.freqs):
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pylab.subplot(HEIGHT, WIDTH, i+1)
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constellation(symbol_list[i], modem.qam.symbols,
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'$F_c = {} Hz$'.format(freq))
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log.info('Received %.3f kB @ %.3f seconds = %.3f kB/s',
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size * 1e-3, duration, size * 1e-3 / duration)
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pylab.figure()
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symbol_list = np.array(stats['symbol_list'])
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for i, freq in enumerate(modem.freqs):
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pylab.subplot(HEIGHT, WIDTH, i+1)
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constellation(symbol_list[i], modem.qam.symbols,
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'$F_c = {} Hz$'.format(freq))
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except Exception as e:
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log.exception(e)
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finally:
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pylab.show()
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pylab.show()
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def constellation(y, symbols, title):
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