Definition of Adaptive digital pulse code modulation

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Adaptive Digital Pulse Code Modulation
<communications> (ADPCM) A compression technique which records only the difference between samples and adjusts the coding scale dynamically to accomodate large and small differences. ADPCM is simple to implement, but introduces much noise.
[Used where? Does the Sony minidisk use ADPCM or ATRAC?]
(1998-12-10)

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