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About Adaptive DPCM
ADPCM, or Adaptive DPCM, is a variant of DPCM (Differential Pulse-Code Modulation) which varies the quantization step size to allow further reduction of the required bandwidth for a given signal-to-noise ratio. The Pulse-Code Modulation values are encoded here as differences between the current and the previous value. For audio this encoding type reduces the number of bits required per sample by about 25% compared to PCM.
The ADPCM algorithm maps a series of 8 bit PCM samples into a series of 4 bit ADPCM samples. Thus the capacity of the line is doubled. |
Supported by converters
Convertability