iOS: Sample code for simultaneous record and playback

Question

I\'m designing a simple proof of concept for multitrack recorder.

Obvious starting point is to play from file A.caf to headphones while simultaneously recording micr

Answer 1

I had this problem and I solved it in my project simply by changing the PreferredHardwareIOBufferDuration parameter of the AudioSession. I think I have just 6ms latency now, that is good enough for my app.

Check this answer that has a good explanation.