title: Disable programmatically noise suppression mic on iPhone 4/4S
body: <p>We have just launched an application on the AppStore very helpful and very friendly which appeals to a lot of people.
  The application name is <a href="http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=510509736&amp;mt=8" rel="nofollow">BadSignal</a>, it simulates the loss of the network. When you're on a  phone call or during a conversation on Skype for example and you do not know how to get rid of your contact, launch the application and follow the instructions on the screen.</p>
  
  <p>So much for the principle of operation.
  Only problem, the iPhone 4 and 4S are equipped with a noise cancellation, which reduces  noise and crackling during a phone conversation that has the effect of suppressing the noises emitted by the application.</p>
  
  <p>Do you know how to disable the second audio microphone during a session?
  The iPhone SDK allows it to turn off microphone or even an external library such as OpenAL or portaudio?</p>
  
  <p>Thx you in advance,
  Steeven</p>