channelizer.py 文件源码

def filter_records_fir(coeffs,
                           num_taps, # ignored
                           decim_factor,
                           recs,
                           record_length, # ignored (uses shape of recs)
                           num_records, # ignored (uses shape of recs)
                           result):
        # split out a, b coefficients
        b = coeffs[:len(coeffs)//2]
        a = coeffs[len(coeffs)//2:]

        filtered_signal = scipy.signal.lfilter(b, a, recs)
        result[:] = np.copy(filtered_signal[:, ::decim_factor], order="C")