Adaptive Differential Pulsation Code Modulation
Adaptive Differential (Delta) Pulse Code Manipulation based on PCM. Loss-impaired compression for audio-data (e.g. CD-ROM/XA, CD-i) possible on 3 different levels. Only differences between the signals are saved. By using this format, up to 16 hours of audio files can be recorded onto one disc (14400 Hertz radio quality).