title: Android emulator not detecting host audio input
body: <p>I am attempting to set up an Android emulator that is capable of receiving the host machine's audio input. This should be perfectly feasible, given the recent <a href="https://developer.android.com/studio/releases/emulator" rel="nofollow noreferrer">release notes found here</a>.</p>
  
  <p>I've attempted the following:</p>
  
  <ul>
  <li>Enabling the "Virtual microphone uses host audio input" found in
  extended controls.</li>
  <li>Launching an emulator via command line with the <code>-allow-host-audio</code> option.</li>
  <li>Toggling host microphone support via <code>adb emu avd hostmicon</code>.</li>
  </ul>
  
  <p>With each attempt I try to use the built in Google assistant to see if it can hear me through my host machine, however it has yet to work.</p>
  
  <p><strong>Questions:</strong></p>
  
  <ol>
  <li>Has anyone got this working?</li>
  <li>Is the feature currently broken?</li>
  <li>Does anything special need to be done on the host machine to support this?</li>
  </ol>
  
  <p>Thanks!</p>