什么是16位线性PCM [英] what is a 16 bit linear PCM

问题描述

大家好
任何人都可以帮助我了解帽子是16位线性pcm吗?

在OP中:我想从实现的角度了解它.我的意思是，我如何将信号转换为16位线性pcm?是否有任何源代码或示例?"

Hi to all
anyone can help me to know hat is 16 bit linear pcm?

From the OP: "I want to know about it from implementation point of view. I mean, how I can convert a singnal to 16 bit linear pcm? Is there any source code or example out?"

推荐答案

您的信号开始时是什么?如果您使用16位A/D进行标准采样(并进行线性量化，这是大多数A/D所做的事情)，则您具有16位线性PCM.如果您正在谈论在类型之间进行转换，那将是另一回事.

非线性算法或压缩算法有效地为感兴趣的电压电平添加了大量的量化状态(通常为较低的值)，从而将保真度添加到较低的级别并将较大的级别压缩为较少的状态. (包括u-law和A-law)

差分算法或增量算法有效地编码了电压电平的差异，而不是电压电平本身.它们通常用于以较低的比特率提供体面的音频. (包括DPCM)

What does your signal start off as? If you do standard sampling with a 16-bit A/D (and quantize linearly, which is what most A/D''s do already), you have 16-bit linear PCM. If you''re talking about converting between types, then that''s a different story.

Non-linear, or compressed, algorithms effectively add a larger number of quantization states for voltage levels that are of interest (typically the lower values), thereby adding fidelity to lower levels and compressing the large levels to a smaller number of states. (this includes u-law and A-law)

Differential, or delta, algorithms effectively encode the differences in voltage levels instead of the voltage level itself. They are commonly used for providing decent audio with lower bit rates. (includes DPCM)

在此处了解所有信息: http://wiki .multimedia.cx/index.php?title = PCM [ ^ ].

您甚至尝试过使用Google吗?

干杯！

-MRB

Read all about it here: http://wiki.multimedia.cx/index.php?title=PCM[^].

Did you even try to google that?

Cheers!

-MRB

Google [ ^ ]是您的朋友. 第一个结果. [ Bing [

Google[^] is your friend. First result.[^]
Bing[^] is also your friend. The first result from google is also the first result from bing.

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