pulse code modulation

基本解释

This article will show how to play PCM (Pulse Code Modulation) audio.
本文将演示如何播放 PCM（脉冲编码调制）音频。
Similarly, the introduction of voice encoding techniques using pulse code modulation contributed to the concept's evolution.
利用脉冲编码调制的话音编码技术同样也对这一概念的发展起了作用。
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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).
音频数据应当是耳机可以理解的格式（例如，Sony 耳机的 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.
ENGADGET: Primed: digital audio basics Mobile
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)