Disable noise cancellation iPhone 4 microphone

I would like to know if it's possible 开发者_开发技巧to disable the noise reduction microphone via code.

My app plays background music that gets trim off because of this new mic. So i would like to have the background noise mic disabled while my app is open and running.

Thank you

Look in Apple's Audio Unit Properties Reference document for the kAUVoiceIOProperty_BypassVoiceProcessing and kAUVoiceIOProperty_VoiceProcessingEnableAGC properties, and how to configure and/or change them.

The new mic should be active only during phone calls and not when your app is playing music. Are you sure this is the problem ??