Slowing Audio Playback in Android

I'm making an Android application where I need to slow down the audio being played so the user can hear the sentences clearer. I have no idea how to approach this. While I do know a little about signal processing I do not know how to incorporate that with the Andr开发者_如何学运维oid. Are there any APIs or something that can help me?

Thanks

I guess this is what you want. There is a method for setting the playback rate, here -> http://developer.android.com/reference/android/media/AudioTrack.html#setPlaybackRate(int)