AudioKit卷积

Question

我正在尝试在mac os应用程序中使用卷积混响。AudioKit 4.03

游乐场的例子对我很有效，但是当我尝试在我的应用程序中复制它时，我得到了这个错误，并且没有音频。

2017-11-18 20:21:36.116436-0500 convolutionVerb测试37554:4533072 AVAEInternal.h:69:_AVAE_Check:必填条件为false: AVAudioEngine.mm:348:AttachNode：(节点!=空) 2017-11-18 20:21:36.116642-0500 convolutionVerb测试37554:4533072无法设置(contentViewController)用户定义的检测属性(NSWindow)：必填条件为false:节点!=空

下面是我的代码(这只是AudioKit游乐场的一个稍微修改过的版本)

类ViewController: NSViewController {

override func viewDidLoad() {
    super.viewDidLoad()



    do {
         file = try AKAudioFile(readFileName: "SAMPLES/Bell.wav")
         player = try AKAudioPlayer(file: file)
    }
    catch {print("DIDN'T LOAD")}

    player.looping = true




    let stairwell = bundle.url(forResource: "stairwell", withExtension: "wav", subdirectory: "Impulse Responses")
        let dish = bundle.url(forResource: "dish", withExtension: "wav", subdirectory: "Impulse Responses")

        stairwellConvolution = AKConvolution(player,impulseResponseFileURL: stairwell!,partitionLength: 8_192)
        dishConvolution = AKConvolution(player,impulseResponseFileURL: dish!,partitionLength: 8_192)


        mixer = AKDryWetMixer(stairwellConvolution, dishConvolution, balance: 0.5)
    dryWetMixer = AKDryWetMixer(player, mixer, balance: 0.5)



    AudioKit.output = dryWetMixer
    AudioKit.start()


    stairwellConvolution.start()
    dishConvolution.start()

    player.play()


    // Do any additional setup after loading the view.
}

Answer 1

很难说这是正确的，但我敢说这与你的视图控制器的生命周期有关。您在viewDidLoad中设置此AudioKit的代码可能不安全。我认为将音频代码放入Engine或Conductor单例类中至少是值得的一步，该类可以在整个项目中访问，而不受UI生命周期的约束。