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Pulse-code modulation

Pulse-code modulation (PCM) is a method used to digitally represent analog signals. It is the standard form of digital audio in computers, compact discs, digital telephony and other digital audio applications. In a PCM stream, the amplitude of the analog signal is sampled at uniform intervals, and each sample is quantized to the nearest value within a…

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Contained by
Audio CD, AES3, WAV, AIFF, AU, M2TS, VOB, and many others
Free format?
Yes
Internet media type
audio/L16, audio/L8, audio/L20, audio/L24
Magic number
Varies
Open format?
Yes
Type code
"AIFF" for L16, none

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Overview

History

Implementations

Modulation

Demodulation

Standard sampling precision and rates

Limitations

Processing and coding

Encoding for serial transmission

Nomenclature

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Map overview Semantic statistics

Pulse-code modulation

Nodes143
Edges142
Triples60
Avg. degree1.99
Density0.013986
Components1

How this topic connects Entity context

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Pulse-code modulation

Top relations

related to External links · 28
Pulse-code modulation → Audio, Bell Labs, Bob Badgley, Contains, DAT Audio, How, Information, January, July, L16, L8, Linear Sampled Audio, LPCM, March, Media Type Registration, Microsoft's Media Control Interface, Minimal Control, MultimediaWikiRalph Miller, N-ary Pulse Code Modulation, Payload Formats
related to Processing and coding · 15
Pulse-code modulation → Adaptive, ADPCM, An, Delta, Differential PCM, DPCM, For, If, Linear PCM, LPCM, MDCT, Older, PCM, Some, These
related to Nomenclature · 4
Pulse-code modulation → In, PCM, The, This
Contained by · 1
Pulse-code modulation → Audio CD, AES3, WAV, AIFF, AU, M2TS, VOB, and many others
Filename extension · 1
Pulse-code modulation → .mw-parser-output .monospaced{font-family:monospace,monospace} .L16, .WAV, .AIFF, .AU, .PCM
Free format? · 1
Pulse-code modulation → Yes
Internet media type · 1
Pulse-code modulation → audio/L16, audio/L8, audio/L20, audio/L24
Magic number · 1
Pulse-code modulation → Varies
Open format? · 1
Pulse-code modulation → Yes
Type code · 1
Pulse-code modulation → "AIFF" for L16, none

Important terminology Word statistics

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Important terminology

pcm used digital audio signal modulation lpcm sample system data format telephony code analog sampling khz encoding value linear samples

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Pulse-code modulationContained byAudio CD, AES3, WAV, AIFF, AU, M2TS, VOB, and many others1.00infobox
Pulse-code modulationFilename extension.mw-parser-output .monospaced{font-family:monospace,monospace} .L16, .WAV, .AIFF, .AU, .PCM1.00infobox
Pulse-code modulationFree format?Yes1.00infobox
Pulse-code modulationInternet media typeaudio/L16, audio/L8, audio/L20, audio/L241.00infobox
Pulse-code modulationMagic numberVaries1.00infobox
Pulse-code modulationOpen format?Yes1.00infobox
Pulse-code modulationType code"AIFF" for L16, none1.00infobox
Pulse-code modulationType of formatUncompressed audio1.00infobox
the public switched telephone networkinstance oftelecommunication networks0.80text
AUinstance ofLPCM data may also be stored in other formats0.80text
raw audio formatinstance ofLPCM data may also be stored in other formats0.80text
run-length limited encodinginstance ofthe density of 1-symbols is called ones-density.Ones-density is often controlled using precoding techniques0.80text

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