How to implement microphone detecting??

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Level 1

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How to implement microphone detecting??

Hi all,
I've seen some iPhone apps can detect the strength or the direction when user blow to microphone.
Dose anyone know where I can find a description about how to implement this feature, I'll deeply appreciate your help.

mac, Mac OS X (10.5.5)

Posted on Feb 11, 2009 3:24 AM

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Answer 1

Feb 11, 2009 5:22 AM in response to ZZC

You will start an AudioSession and use the AudioQueue in record mode.

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Answer 2

ZZC Author

Level 1

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Feb 13, 2009 2:25 AM in response to jtgrassie

I've read audio session, but can't find anything about how to implement detecting strength or direction when user blowing to microphone.
Can you tell me where exactly the details about this technology can be found? Thanks.^^"

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Answer 3

orangekay

Level 5

4,085 points

Feb 13, 2009 2:47 AM in response to ZZC

In an advanced digital signal processing class most likely.

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Answer 4

Feb 13, 2009 11:57 AM in response to ZZC

You will have to analyse the buffers in your audioqueue.

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