Pulse Code Modulation: Difference between revisions
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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]]. | ||
This technology was created by Alec Reeves in 1937. | |||
See also: [[PDM]] and [[PAM]] | |||
[http://homepage.ntlworld.com/quantium/ahr/pcm.htm A page on PCM history] | |||
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Revision as of 12:41, 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.
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