differential pulse-code modulation

differential pulse-code modulation

[dif·ə′ren·chəl ′pəls ‚kōd ‚mäj·ə′lā·shən]
(communications)
A type of pulse-code modulation proposed for television transmission, in which only the differences between the continuous picture elements on the scanning lines are transmitted, enabling the bandwidth of the signal to be reduced. Abbreviated DPCM.
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It also has recording features such as real-time MP3 or adaptive differential pulse-code modulation (ADPCM) encoding for both speech and music (jukebox).

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