pulse code modulation

pulse-code modulation

[puhls-kohd]
noun Telecommunications.
a form of modulation that transforms a wave-form, as an audio signal, into a binary signal in which information is conveyed by a coded order of pulses for transmission, storage on a disk, or processing by a computer. Abbreviation: PCM

Origin:
1945–50

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pulse code modulation
 
n
electronics pcm a form of pulse modulation in which the information is carried by coded groups of pulses

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Computing Dictionary

Pulse Code Modulation definition

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.
(1995-02-09)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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