Add iPod Equalizer effect using AVPlayer

Question

We are developing a music app using AVPlayer, which is at the end stage. Everything was on track until we started working on iPod Equalizer applying effects to

Answer 1

Use MTAudioProcessingTap + AUGraph + AudioUnit can do that, the official demo AudioTapProcessor show you how to use MTAudioProcessingTap to handle audio data and then combine with AVPlayer on it's process callback, replace it's AudioUnit by using AUGraph +AudioUnit