iPhone SDK: How to record voices with ambient noise supression?

Posted by Harkonian on Stack Overflow See other posts from Stack Overflow or by Harkonian
Published on 2010-02-26T19:08:55Z Indexed on 2010/04/14 16:33 UTC
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iphone-sdk

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core-audio

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noise-reduction

Can anyone point me in the right direction on how I would minimize ambient noise while recording someone speaking using the iPhone SDK Core Audio? I'm guessing a band-pass filter that eliminates any frequencies above and below the human vocal range might work. I have no idea how I would implement band filters on audio in the SDK though. The optimum solution would be one that eliminates the noise from the stream before it is written to memory/disk.

Some sample code would be appreciated.

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