CLIPPING
An electronic process for limiting the amplitude of video or audio signals. Sometimes, clipping is performed prior to Modulation and sometimes to limit signal level, so that it will not exceed a predetermined, allowed level. In video, the term SOFT clipping is used when the luminance signal is limited, and HARD clipping is used when both luminance and chrominance signals are limited. Clipping a signal can distort it, resulting in additional, unwanted harmonics.
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