Difference between revisions of "Pulse Code Modulation"

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'''Pulse Code Modulation''' ('''PCM''') is a method of recording sound as digital data. The amplitude of the audio signal is sampled at a regular [[sampling frequency]], and [[Quantization|quantized]] with a fixed [[bit depth]].
 
'''Pulse Code Modulation''' ('''PCM''') is a method of recording sound as digital data. The amplitude of the audio signal is sampled at a regular [[sampling frequency]], and [[Quantization|quantized]] with a fixed [[bit depth]].
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This technology was created by Alec Reeves in 1937.
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See also: [[PDM]] and [[PAM]]
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[http://homepage.ntlworld.com/quantium/ahr/pcm.htm A page on PCM history]
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Revision as of 13:41, 22 March 2005

Pulse Code Modulation (PCM) is a method of recording sound as digital data. The amplitude of the audio signal is sampled at a regular sampling frequency, and quantized with a fixed bit depth.

This technology was created by Alec Reeves in 1937.

See also: PDM and PAM

A page on PCM history