When you automatically remove silences from speech or podcast recordings, you cut hundreds of audio slices and stitch them back together.

If you do this naively by simply concatenating raw audio arrays:

# Naive concatenation: guaranteed audio artifacts clean_audio = np . concatenate ([ segment_a , segment_b ])

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Your output will be riddled with audible clicks, pops, and ticks . Every single edit point sounds like a tiny vinyl scratch.

Here is why naive concatenation fails, what a linear crossfade fixes (and what it doesn't), how an equal-power crossfade works in NumPy, and what we actually ship in VoxCut .

Why Edit Points Pop: Amplitude Discontinuities

Digital audio is a sequence of samples (e.g.…