How to detect level audio level of current segment of mp3 playing using AVAudioPlayer

Question

If i am palying a sound using the AVAudioPlayer in the AVFoundation framework (I can already do this), is there any way to detect the current level of the audio playing, like a VU meter that is listening to the mp3 playing.

I don't want to detect the audio of the mic, just the file playing.

I want to animate a mouth to prerecorded audio that will be played, and don't want to program a whole load of animations (100's and 100's).

In a way the mouth is responding like a VU meter.

I can do all the animation I just need to know how to detect the level.

Anyone done this or know how to?

Answer 1

The aurioTouch sample code from Apple shows how to visualize audio input (time-domain, spectral).

As Apple's sample is pretty complex, you might want to start with this tutorial, which shows how to setup the RemoteIO audio unit: Using RemoteIO audio unit