ios - 在AudioEngine中使用声音效果

背景-从最近在Apple的WWDC上发布的将声音效果应用于音频的视频列表中，我看到了名为“AVAudioEngine in Practice”的视频。
https://developer.apple.com/videos/wwdc/2014/

之后，我可以使用以下代码成功更改音频的音调:

 //Audio Engine is initialized in viewDidLoad()
 audioEngine = AVAudioEngine()
 //The following Action is called on clicking a button
 @IBAction func chipmunkPlayback(sender: UIButton) {
        var pitchPlayer = AVAudioPlayerNode()
        var timePitch = AVAudioUnitTimePitch()
        timePitch.pitch = 1000

        audioEngine.attachNode(pitchPlayer)
        audioEngine.attachNode(timePitch)

        audioEngine.connect(pitchPlayer, to: timePitch, format: myAudioFile.processingFormat)
        audioEngine.connect(timePitch, to: audioEngine.outputNode, format: myAudioFile.processingFormat)

        pitchPlayer.scheduleFile(myAudioFile, atTime: nil, completionHandler: nil)
        audioEngine.startAndReturnError(&er)

        pitchPlayer.play()

    }

据我了解，我使用AudioEngine将AudioPlayerNode附加到AudioEffect，然后将其附加到Output。

我现在很好奇要在音频中添加多种声音效果。例如，音高变化和混响。如何为音频添加多种声音效果？

另外，在viewDidLoad中连接和连接节点是否有意义，而不是在IBAction中如何完成？

最佳答案

只需连接它们即可。

engine.connect(playerNode, to: reverbNode, format: format)
engine.connect(reverbNode, to: distortionNode, format: format)
engine.connect(distortionNode, to: delayNode, format: format)
engine.connect(delayNode, to: mixer, format: format)

关于ios - 在AudioEngine中使用声音效果，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/25333140/