iPhone does not vibrate while recording
core-audio, iphone
Solution
The answer is that Apple doesn't allow this. All audio sessions that allow recording turn off vibration.
Problem
I am modifying the AurioTouch example. I want to vibrate the phone in response to particular sound inputs. I can detect the inputs and `printf` them, but `AudioServicesPlaySystemSound(kSystemSoundID_Vibrate)` doesn't do anything while the session is `kAudioSessionCategory_PlayAndRecord`.