How do you determine the audio latency (AudioTrack) on Android?

Question

I have an app in which I use an AudioTrack in streaming mode to play dynamically generated audio. The app doesn\'t have to respond instantaneously to inputs, s

Answer 1

Consider driver's latency. There's hidden function AudioManager.getOutputLatency(int) to get this.

Call it like this:

AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
try{
   Method m = am.getClass().getMethod("getOutputLatency", int.class);
   latency = (Integer)m.invoke(am, AudioManager.STREAM_MUSIC);
}catch(Exception e){
}

I get about 45 - 50 ms on different devices. Use the result in your calculations.