Matyooo

Hamming function should be the following

1

float hamming(float x) { return (0.54-0.46*cos(2*M_PI*(0.5+(x/2)))); } //hamming window function used for FIR filter design

You should decimate in two steps.

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One step before demodulation, decimation factor is samp_rate / amfm_bw Other step is after demodulation, factor is amfm_bw / output_rate. Linear interpolation should be used in second step instead of...