Tengo un bloqueo cuando intento conectar dos AVAudioMixerNodes a la entrada de micrófono de AVAudioEngine . No pude encontrar documentación en línea sobre cómo administrar dos o más nodos en la misma entrada.

¿Cuál es la forma correcta de manejar ese caso en el que tiene múltiples nodos escuchando el micrófono?

Estoy llamando a esos tres métodos después del otro en el hilo de fondo:

 private func setupSession() { let session = AVAudioSession.sharedInstance() do { try session.setCategory(.playAndRecord, options: [.mixWithOthers]) if session.isInputGainSettable { try session.setInputGain(0.2) } try session.setActive(true, options: .notifyOthersOnDeactivation) } catch let error as NSError { LoggerManager.shared.error(error: error, message: "Error while setting up AVAudioSession Category/Active status") } } private func setupMixerNodes() { analyzerNode = AVAudioMixerNode() analyzerNode.volume = 0 volumeNode = AVAudioMixerNode() volumeNode.volume = 0 engine.attach(analyzerNode) engine.attach(volumeNode) } private func makeConnections() { /* input microphone */ let inputNode = engine.inputNode let inputFormat = inputNode.outputFormat(forBus: 0) let analyzerConnectionPoint = AVAudioConnectionPoint(node: analyzerNode, bus: 0) let volumeConnectionPoint = AVAudioConnectionPoint(node: volumeNode, bus: 0) engine.connect(inputNode, to: [analyzerConnectionPoint, volumeConnectionPoint], fromBus: 0, format: inputFormat) let mainMixerNode = engine.mainMixerNode let mixerFormat = AVAudioFormat(commonFormat: .pcmFormatFloat32, sampleRate: inputFormat.sampleRate, channels: 1, interleaved: false) engine.connect(analyzerNode, to: mainMixerNode, fromBus: 0, toBus: 0, format: mixerFormat) engine.connect(volumeNode, to: mainMixerNode, fromBus: 0, toBus: 1, format: mixerFormat) }

y me sale este fallo:

 AURemoteIO.cpp:1128 failed: -10851 (enable 1, outf< 2 ch, 0 Hz, Float32, deinterleaved> inf< 2 ch, 0 Hz, Float32, deinterleaved>) 2022-03-08 12:59:57.950612-0500 SnoreLabo[2914:456147] [avae] AVAEInternal.h:76 required condition is false: [AVAudioEngineGraph.mm:2401:ConnectMultipleOutputs: (IsFormatSampleRateAndChannelCountValid(format))] 2022-03-08 12:59:58.030789-0500 SnoreLabo[2914:456147] *** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: IsFormatSampleRateAndChannelCountValid(format)' *** First throw call stack: (0x18273ed3c 0x199aa36a8 0x1828085bc 0x1ddf44eac 0x1ddf9b020 0x1de01bfa0 0x1de018328 0x104d4db1c 0x104d4e1f8 0x104ed4f6c 0x104bcdbe8 0x10dc00718 0x10dc01f94 0x10dc13edc 0x10dc146fc 0x1dcc4ae48 0x1dcc4a9f0) libc++abi: terminating with uncaught exception of type NSException dyld4 config: DYLD_LIBRARY_PATH=/usr/lib/system/introspection DYLD_INSERT_LIBRARIES=/Developer/usr/lib/libBacktraceRecording.dylib:/Developer/usr/lib/libMainThreadChecker.dylib:/Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib *** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: IsFormatSampleRateAndChannelCountValid(format)' terminating with uncaught exception of type NSException