Other
Pulse-code modulation (PCM) is a digital
representation of an analog signal where the magnitude of the signal is sampled
regularly at uniform intervals, then quantized to a series of symbols in a
digital (usually binary) code. PCM has been used in digital telephone systems
and is also the standard form for digital audio in computers and the compact
disc red book format. It is also standard in digital video, for example, using
ITU-R BT.601. However, straight PCM is not typically used for video in consumer
applications such as DVD or DVR because it requires too high a bit rate. Very
frequently, PCM encoding facilitates digital transmission from one point to
another (within a given system, or geographically) in serial form.
matlab
代码
调制
脉冲
No comment