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I have noticed that all filter taps from the firdes class are normalized by dividing them over the sum of all taps magnitude Not strictly: for (int i = 0; i < ntaps; i++) taps[i] = taps[i] / scale * gain; is not summing over the magnitude, but over the taps. (doesn't make a difference here, all these taps are positive real numbers, but for other ...


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