title: Android : How to change Playback Rate of music using OpenSL ES
body: <p>I am working on a music player in which I need to change tempo (playback speed of music) without changing the pitch. </p>
  
  <p>I'm not able to find any native android class to do so. I tried SoundPool but it doesn't work with large music files and it also doesn't seems to work on many devices. I also tried AudioTrack but again no luck. </p>
  
  <p>Now I am trying android NDK audio example which use OpenSL ES to handle music. Now I just want to add set playback rate feature in this example. </p>
  
  <p>Can anyone show me how do I add change playback rate function in it?</p>