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from xcode5 to xcode6-beta6, sounds are now distorted on iOS7
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from xcode5 to xcode6-beta6, sounds are now distorted on iOS7

  • Subject: from xcode5 to xcode6-beta6, sounds are now distorted on iOS7
  • From: Pascal <email@hidden>
  • Date: Sun, 31 Aug 2014 09:46:41 +0200

Hi,

I have a remoteIO application that loads and plays samples on iOS. It works fine when built with xcode5. I use iOS7 as a deployment target. 

My application was originally built using the AudioUnitSampleType audio format and the kAudioFormatFlagsCanonical format flags. My sample files are 16 bits/44100Hz/Mono/Caf files.

Now I want to run it on iOS8.

Building my app with its original code on xcode6, the app runs fine on an iOS7 device but it produces no sounds on an iOS8 device.

As AudioUnitSampleType and kAudioFormatFlagsCanonical are deprecated in iOS8, I replaced them, after some researches, with float and kAudioFormatFlagIsFloat | kAudioFormatFlagIsPacked | kAudioFormatFlagIsNonInterleaved.

Now my app runs fine on iOS8 but the sounds are saturated on iOS7.

Has anyone experiences this? Any help ? Thanks, I am stuck here.

Pascal

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