Pulse-code modulation (PCM)

موضوع: Pulse-code modulation (PCM) الأحد نوفمبر 14, 2010 8:14 pm

Pulse-code modulation (PCM): is a method used to digitally represent sampled analog signals, which was invented by Alec Reeves in 1937.

It is the standard form for digital audio in computers and various Blu-ray, Compact Disc and DVD formats, as well as other uses such as digital telephone systems.

A PCM stream is a digital representation of an analog signal, in which the magnitude of the analogue signal is sampled regularly at uniform intervals, with each sample being quantized to the nearest value within a range of digital steps.

There are three stages for PCM :

Sampling.
Quantization.
Coding.

I'll talk about three stages in coming times

THANK'S EVRY ONE

ونحن في الانتظار انشاء الله