FM Demod blks2_fm_demod_cf from gnuradio import blks2 blks2.fm_demod_cf( channel_rate=$chan_rate, audio_decim=$audio_decim, deviation=$deviation, audio_pass=$audio_pass, audio_stop=$audio_stop, gain=$gain, tau=$tau, ) Channel Rate chan_rate real Audio Decimation audio_decim int Deviation deviation 75000 real Audio Pass audio_pass 15000 real Audio Stop audio_stop 16000 real Gain gain 1.0 real Tau tau 75e-6 real in complex out float