title: AEC ( Echo Cancellation Support ) in OSX Using AudioQueue
body: <p>I am developing VOIP Application on OSX and iOS and will be using AudioQueue for Audio flow, what want to Know is, by default does AudioQueue support acoustic echo cancellation or do we need to add support for it,<br>
  If we need to implement, i believe some open source library has to be implemented like Speex are there any Example available shows integration of AudioQueue with Speex or any other library </p>