 Differential pulse-code modulation

Differential Pulse-Code Modulation (DPCM) is a signal encoding technique used primarily in audio and video compression, as well as in digital communications. It is an extension of Pulse-Code Modulation (PCM) and is specifically designed to reduce the bit rate required for transmission by exploiting the correlation between successive samples. ### How DPCM Works: 1. **Prediction**: DPCM predicts the current sample value based on previous samples.