title: iOS counterpart to androids AudioSource enumeration
body: <p>Android has the <code>MediaRecorder.AudioSource</code> Enumeration. With it, Android applies preprocessing to the audio data for example with the <code>VOICE_COMMUNICATION</code> option.</p>
  
  <p>Is there a counterpart to this on iOS? So far I am using <code>AudioInputQueue</code> to capture audio data from the microphone. However, I couldn't find an option which allows me to use basic preprocessing as with Androids <code>AudioSource</code> enumeration. </p>
  
  <p>Since I am working with Xamarin, the solution I am looking for needs to be accessible through Xamarin.</p>