Adaptive Differential Pulse Code Modulation (ADPCM)

Adaptive Differential Pulse Code Modulation (ADPCM) is a method for compressing audio signals by predicting future sound samples based on previous ones. Instead of transmitting the entire sound wave, it sends only the difference between predicted and actual samples, which usually has less information. The "adaptive" aspect means the system dynamically adjusts how it predicts and compresses data to maintain quality even as the sound changes. This process reduces the amount of data needed, making it efficient for storing or transmitting audio, such as in phone calls or voice recordings, without significantly compromising sound quality.