Log Power FFT blks2_logpwrfft_x from gnuradio import blks2 blks2.logpwrfft_$(type.fcn)( sample_rate=$sample_rate, fft_size=$fft_size, ref_scale=$ref_scale, frame_rate=$frame_rate, avg_alpha=$avg_alpha, average=$average, ) set_sample_rate($sample_rate) set_avg_alpha($avg_alpha) Input Type type enum Complex complex fcn:c Float float fcn:f Sample Rate sample_rate samp_rate real FFT Size fft_size 1024 int Reference Scale ref_scale 2 real Frame Rate frame_rate 30 real Average Alpha avg_alpha 1.0 real Average average False enum On True Off False in $type out float $fft_size