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Computing (FOLDOC) dictionary
Pulse Code Modulation
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data (PCM) A method by which an audio signal is represented
as digital data.
Virtually all digital audio systems use PCM, including, CD,
DAT, F1 format, 1630 format, DASH, DCC, and MD. Many people
get confused because "PCM" is also slang for Sony's F1 format
which stores PCM digital audio on videotape.