DPCM

(redirected from differential PCM)

DPCM

DPCM

(Differential PCM) A PCM technique that codes the difference between sample points to compress the digital data. Because audio waves propagate in predictable patterns, DPCM predicts the next sample and codes the difference between the prediction and the actual point. The differences are smaller numbers than the numerical value of each sample on the full scale and thereby reduce the resulting bitstream. See PCM, ADPCM and sampling.
References in periodicals archive ?
The Entropia chip leads the market with the capability to process 336 channels of either Pulse Code Modulation (PCM) or Adaptive Differential PCM (ADPCM) on a single chip.
The Entropia chip leads the market with capability to process 336 channels of either Pulse Code Modulation (PCM) or Adaptive Differential PCM (ADPCM) on a single chip.
The Entropia chips for the enterprise market support industry-leading 64, 48, 32, or 24-channel densities using Pulse Code Modulation (PCM) or Adaptive Differential PCM (ADPCM).
Entropia provided support for 256 full duplex Adaptive Differential PCM (ADPCM32) AAL2 channels in its initial release in July 2000.

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