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Re: Do iPhone audio session interruptions effect volume of samples generated by audio queues in offline render mode?
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Re: Do iPhone audio session interruptions effect volume of samples generated by audio queues in offline render mode?


  • Subject: Re: Do iPhone audio session interruptions effect volume of samples generated by audio queues in offline render mode?
  • From: William Stewart <email@hidden>
  • Date: Thu, 24 Jun 2010 19:45:50 -0700

On Jun 24, 2010, at 6:42 PM, Neil Mix wrote:

> I've noticed (and we even had one customer report!) that incoming text messages will cause audio volume to drop twice -- once for the alert sound, and then once again a moment later for no reason.  At first I thought this must be some kind of intentional (if a bit strange) audio effect, but on second thought I'm wondering if there's an unintended side-effect going on here.

Yes there is.

>
> We're using audioQueue in offline-render mode and then shuffling the output to the remoteIO audio unit.  So I'm wondering if the first volume drop (synchronized with the alert sound) is the remoteIO volume adjustment, and the second dip is manipulation of the samples we're spooling up in the offline render (which would then play a second or two after the interruption).  Good guess, or crackpot theory?  If I guessed right, I'll be happy to write up a radar.

something along those lines. I believe we have this fixed, but please check this out on any upcoming seeds.

Bill

>
> Thanks,
>  -Neil _______________________________________________
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 >Do iPhone audio session interruptions effect volume of samples generated by audio queues in offline render mode? (From: Neil Mix <email@hidden>)

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