The digital ceiling cuts off the waveform
Digital audio stores sound as a stream of numbers representing the signal’s level at successive moments. In a fixed-format recording, those numbers have a maximum and minimum: the system cannot represent a level above its ceiling. If an input or an audio-processing step demands more, the excess is discarded. Instead of continuing to rise and fall smoothly, the waveform hits the ceiling and stays there briefly.
That flat top is more than a visual blemish. A smooth tone contains a relatively orderly set of frequencies; abruptly cutting its peaks adds extra frequency components, including higher ones. The ear can perceive those additions as a rough, buzzy edge—especially when clipping is sustained or affects a loud sound.
Why turning it down may not fix it
Once the peaks have been cut, lowering the track’s volume reduces the damaged signal but does not reconstruct the missing shape. The original peak values are gone. This is why preventing overload during recording or processing matters: leave headroom, meaning room between the signal’s usual peaks and the digital ceiling.
A limiter can reduce brief peaks before they hit that ceiling, though doing so heavily may change the sound’s punch and dynamics. Clipping is therefore not simply “too much volume” at the speakers; it is damage introduced when the digital signal exceeds what that stage can represent. A track can play quietly and still carry the harsh imprint of peaks that were flattened earlier.
