我正在尝试将AVAudioUnitEffect连接到AVAudioEngine的实例，如下所示:requiredinit(inputFormat:AVAudioFormat,outputFormat:AVAudioFormat,andAVAudioEngineavAudioEngine:AVAudioEngine){self.inputFormat=inputFormatself.outputFormat=outputFormatself.avAudioEngine=avAudioEngineself.myAudioUnit=MyAVAudioUnit()super.init()avA