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pulse-code modulation

[puhls-kohd]

noun

Telecommunications.

  1. 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. PCM

pulse code modulation

noun

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

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of pulse-code modulation1

First recorded in 1945–50

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pulsebeatpulse dialing

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