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如何在Windows（和OSX）中进行采样率转换

[英]How to do a sample rate conversion in Windows (and OSX)

原文 2008-09-03 12:48:42 9 2 c++/ windows/ macos/ audio

I am about to write an audio file converter for my side job at the university. 我准备为我在大学的旁边工作写一个音频文件转换器。
As part of this I would need sample rate conversion. 作为其中的一部分，我需要采样率转换。 However, my professor said that it would be pretty hard to write a sample rate converter that was both of good quality and fast. 然而，我的教授说，这将是非常难写一个采样率转换器，这是两个质量好，速度快。

On my research on the subject, I found some functions in the OSX CoreAudio-framework, that could do a sample rate conversion (AudioConverter.h). 在我对这个主题的研究中，我发现OSX CoreAudio框架中的一些函数可以进行采样率转换（AudioConverter.h）。 After all, an OS has to have some facilities to do that for its own audio stack. 毕竟，操作系统必须有一些设施才能为自己的音频堆栈做到这一点。

Do you know a similar method for C/C++ and Windows, that are either part of the OS or open source? 您是否知道C / C ++和Windows的类似方法，它们是操作系统的一部分还是开源的？
I am pretty sure that this function exists within DirectX Audio (XAudio2?), but I seem to be unable to find a reference to it in the MSDN library. 我很确定这个函数存在于DirectX Audio（XAudio2？）中，但我似乎无法在MSDN库中找到它的引用。

2 个解决方案

Try Secret Rabbit Code (= SRC = Sample Rate Conversion ) It's GPL, it's fast and it's high quality. 尝试秘密兔码（= SRC =采样率转换）这是GPL，它速度快，而且质量很高。 http://www.mega-nerd.com/SRC/license.html http://www.mega-nerd.com/SRC/license.html

If you're worried about quality, check out http://src.infinitewave.ca/ . 如果您担心质量问题，请访问http://src.infinitewave.ca/ 。 Very good comparisons on different resamplers. 对不同的重采样器进行了非常好的比较。