Adaptive differential pulse-code modulation
= Adaptive differential pulse-code modulation
{wiki=Adaptive_differential_pulse-code_modulation}
Adaptive Differential Pulse-Code Modulation (ADPCM) is an audio signal encoding technique that aims to reduce the bit rate of audio data while maintaining acceptable sound quality. It is a form of differential pulse-code modulation (DPCM), which encodes the difference between successive audio sample values rather than the absolute sample values themselves.