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I wish to record audio at 32 kHz on my Symbian device but it only supports 48 kHz. From searching the internet I believe the term for what I am trying to do is called downsizing. Is there a C++ library that will compile and run on Nokia Symbian phones that will do this for me? Or is the algorithm simple enough for me to implement on my own?

A: 

The term you are looking for is downsampling. You can probably get the code you need from the sources of the open source SoX utility.

Paul R