pulse code modulation

基本解釋

This article will show how to play PCM (Pulse Code Modulation) audio.
本文將演示如何播放 PCM（脈沖編碼調制）音頻。
Similarly, the introduction of voice encoding techniques using pulse code modulation contributed to the concept's evolution.
利用脈沖編碼調制的話音編碼技術同樣也對這一概念的發(fā)展起了作用。
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The audio data should be in a format understood by the headset (for example, A-law PCM [Pulse Code Modulation] format for the Sony headset).
音頻數據應當是耳機可以理解的格式（例如，Sony 耳機的 A-law PCM [Pulse Code Modulation] 格式）。

Pulse-code modulation is simply a way of representing the analog electrical signal, in digital form.
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While it's always hard to pin down the exact origins of an idea -- especially one like pulse-code modulation, where a number of parties were involved -- sifting out the large and significant contributions from the gold pan of history tends to bring up the same names time and again.
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Shannon would also contribute to the further development of pulse-code modulation (along with Bell alumni Bernard M Oliver and John R Pierce) at around the same time, using technology that eliminated some of the issues (such as complex circuitry) from the earlier, but conceptually similar, implementation from Briton Alec Reeves in 1938.
ENGADGET: Primed: digital audio basics Mobile

a form of pulse modulation in which the information is carried by coded groups of pulses ( abbr: pcm)