将PCM转换为IMA ADPCM的算法? [英] Algorithm for converting PCM to IMA ADPCM?

问题描述

我有一种算法，可以从 http://wiki.multimedia.cx解压缩IMA ADPCM/index.php?title=IMA_ADPCM ，但无法将其重新压缩回IMA ADPCM.是否有一个简单的伪代码描述，还是我必须从解压缩算法对其进行逆向工程?

I have an algorithm for decompressing IMA ADPCM from http://wiki.multimedia.cx/index.php?title=IMA_ADPCM, but no way to re-compress it back to IMA ADPCM. Is there a simple pseudo code description, or do I have to reverse engineer it from the decompression algorithm?

之所以这样做，是因为我编写的服务器需要接收音频，将音轨合并在一起，然后再发送回去.

I'm doing this because I'm writing a server that needs to receive audio, merge the audio tracks together, then send it back out.

感谢您的帮助.

推荐答案

糟糕...

我确实环顾了一下，甚至找到了解决这个问题的方法: http://www. cs.columbia.edu/~hgs/audio/dvi/.

I did look around a bit and even found my way to this question: What is the algorithm of converting pcm to adpcm?. And to the site that held the answer for both questions: http://www.cs.columbia.edu/~hgs/audio/dvi/.

但是我对浏览如此多的页面和文档感到沮丧，当我找不到页面时，我放弃了寻找.

But I was too frustrated with looking through so many pages and documents that I gave up looking when I couldn't find the page.

但是我找到了. 第31-35页提供了算法以及运行该算法的示例.

But I found it. Pages 31-35 give the algorithm and a examples of running through it.

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