title: Add iPod Equalizer effect using AVPlayer
body: <p>We are developing a music app using AVPlayer, which is at the end stage. Everything was on track until we started working on <strong>iPod Equalizer</strong> applying effects to the currents song.
  We are able to fetch the built in Equalizers list when we apply the <strong>AudioUnitProperty</strong> we don't see any effects in songs.</p>
  
  <p>Your valuable response will be helpful to us. </p>