CODEWITHSUNDEEP
c++windowsmacosaudio
bastibe
bastibe

Reputation: 17189

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

I am about to write an audio file converter for my side job at the university.
As part of this I would need sample rate conversion. However, my professor said that it would be pretty hard to write a sample rate converter that was both of good quality and fast.

On my research on the subject, I found some functions in the OSX CoreAudio-framework, that could do a sample rate conversion (AudioConverter.h). After all, an OS has to have some facilities to do that for its own audio stack.

Do you know a similar method for C/C++ and Windows, that are either part of the OS or open source?
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.

Upvotes: 4

Views: 3717

Answers (2)

rcw3
rcw3

Reputation: 3034

If you're worried about quality, check out http://src.infinitewave.ca/. Very good comparisons on different resamplers.

Upvotes: 1

Mendelt
Mendelt

Reputation: 37483

Try Secret Rabbit Code (= SRC = Sample Rate Conversion ) It's GPL, it's fast and it's high quality. http://www.mega-nerd.com/SRC/license.html

Upvotes: 5

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