What does PCM mean in Shipping & Sailing?

This page is about the meanings of the acronym/abbreviation/shorthand PCM in the Miscellaneous field in general and in the Shipping & Sailing terminology in particular.

Patrol Craft, Missile

Ship Types

Miscellaneous » Shipping & Sailing

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Submitted by paul8539 on November 23, 2007

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Definition

What does PCM mean?

pcm
Pulse-code modulation (PCM) is a method used to digitally represent sampled 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 range of digital steps. Linear pulse-code modulation (LPCM) is a specific type of PCM in which the quantization levels are linearly uniform. This is in contrast to PCM encodings in which quantization levels vary as a function of amplitude (as with the A-law algorithm or the μ-law algorithm). Though PCM is a more general term, it is often used to describe data encoded as LPCM. A PCM stream has two basic properties that determine the stream's fidelity to the original analog signal: the sampling rate, which is the number of times per second that samples are taken; and the bit depth, which determines the number of possible digital values that can be used to represent each sample.

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    CMS
    A Center of Medical Services
    B Central Module Support
    C Central Monitor System
    D Content Management System