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pulse code modulation

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.01 sec.
pulse code modulation: see modulation modulation, in communications, process in which some characteristic of a wave (the carrier wave) is made to vary in accordance with an information-bearing signal wave (the modulating wave); demodulation is the process by which the original signal is recovered from
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See PCM.

(data)Pulse Code Modulation - (PCM) A method by which an audio signal is represented as digital data.

Virtually all digital audio systems use PCM, including, CD, DAT, F1 format, 1630 format, DASH, DCC, and MD. Many people get confused because "PCM" is also slang for Sony's F1 format which stores PCM digital audio on videotape.


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In order to lighten the circuitry, the compression ratio was limited to one-third (1/3), and a differential pulse code modulation (DPCM)(*2) scheme featuring simple structures was adopted.
Fujitsu Develops SmartCODEC(TM) Streamlined Image Compression ... by JCN Newswires
Other features include its Dynamic Acoustics technology, which allows the piano to replicate the direct sounds of hammers striking string, delivering the reflective and resonating sounds of an acoustic piano performance, and its Pulse Code Modulation, which includes settings for grand, upright and electric piano and also features the tones of a harpsichord, pipe organ and strings.
Meisel introduces digital tuner/metronome combination. (Music ... by American Music Teacher
92 also includes a capability called pulse code modulation (PCM) upstream, which boosts the upstream data rates from the user to the ISP to reduce transfer times for large files and email attachments sent by the user.
CONEXANT APPLAUDS ITU RATIFICATION OF V.92 STANDARD by EDP Weekly's IT Monitor
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