AudioOutputUnitStart takes time

Posted by tokentoken on Stack Overflow See other posts from Stack Overflow or by tokentoken
Published on 2010-03-24T21:19:55Z Indexed on 2010/03/24 21:23 UTC
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core-audio

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iphone

Hello,

I'm making an iPhone game application using Core Audio, Extended Audio File Services.

It works OK, but when I first call AudioOutputUnitStart, it takes about 1-2 seconds. After the second call, no problem. For a game application, 1-2 seconds is very noticeable. (I tested this on iPhone simulator, and iPhone 3GS)

Also, if I leave the game for about 10 seconds, first call of AudioOutputUnitStart also takes time.

Maybe I have to call AudioOutputUnitStart beginning of the application to prevent the start-up time?

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