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pulse-code modulation

[puhls-kohd]
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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. Abbreviation: PCM
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Origin of pulse-code modulation

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for pulse code modulation

pulse code modulation

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