AVAudioEngine apply audio effects

Question

I am trying to make audio processing application. Is there a way to apply audio effects to audio file using AVAudioEngine?

Answer 1

Yes, you sure can, You can use:

• AVAudioPlayerNode
• AVAudioUnitDistortion (or any other effect unit)
• engine.outputNode (speaker)

The general connection of the graph looks like:

func connectNodes()
{
    engine.connect(unitfilePlayer, to:unitdistortionUnit, format:unitfilePlayerformat)
    engine.connect(unitdistortionUnit, to:unitspeaker, format:engine.mainMixerNode.outputFormat(forBus: 0))
}

So the graph looks like: