Future Music

How to… manage inevitable clicks

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Chop up an audio file and it’s likely you’ll inadverten­tly chop into a waveform at a point which isn’t ‘0’. If you open an audio editor and inspect a waveform closely you’ll see that its height, or amplitude, represents a snapshot of its volume at that moment in time and when audio passes through ‘0’, it’s momentaril­y silent. It’s too much to hope that chopping wherever you need an audio edit will always coincide with a ‘zero crossing’. So be ready with fades or envelope-shaping to avoid the pesky clicks which occur at the start or end of waveforms.

Even tiny fades of a couple of millisecon­ds will remove clicks.

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