SoftClipping

Soft clipping is a type of signal processing distortion that occurs when an audio signal's amplitude exceeds the maximum level a device can handle. Unlike hard clipping, which abruptly cuts off the waveform, soft clipping gradually rounds off the peaks. This rounding results in a smoother, more musical distortion that can add warmth and saturation to a sound.

The effect of soft clipping is often described as "tube-like" or "tape saturation." It introduces harmonic overtones that can enrich the original signal. While hard clipping can sound harsh and unpleasant, soft clipping is generally more pleasing to the ear. It is commonly used in audio mixing and mastering to control dynamics, add character, and prevent digital clipping.

Many audio processors and software plugins offer soft clipping as a feature. It can be applied to individual tracks or to the master output of a mix. The degree of soft clipping can usually be adjusted, allowing users to control the amount of saturation and distortion introduced. The circuitry or algorithm responsible for soft clipping typically employs a non-linear transfer function that compresses and limits the signal's peaks gradually rather than abruptly. This controlled compression helps to maintain a fuller sound while still managing signal levels.