Question

我希望有人可以帮助我。我正在尝试获得一个基本的录音设置，但是AudioKit正在崩溃，我确信这是我的错，而且我做的不对。这是我的设置。在我的viewDidLoad我正在配置AudioKit，如下所示：

// Session settings
do {
    AKSettings.bufferLength = .short
    try AKSettings.setSession(category: .playAndRecord, with: .allowBluetoothA2DP)
} catch {
    AKLog("Could not set session category.")
}

AKSettings.defaultToSpeaker = true

// Setup the microphone
micMixer = AKMixer(mic)
micBooster = AKBooster(micMixer)

// Load the test player
let path = Bundle.main.path(forResource: "audio1", ofType: ".wav")
let url = URL(fileURLWithPath: path!)
testPlayer = AKPlayer(url: url)
testPlayer?.isLooping = true

// Setup the test mixer
testMixer = AKMixer(testPlayer)

// Pass the output from the player AND the mic into the recorder
recordingMixer = AKMixer(testMixer, micBooster)
recorder = try? AKNodeRecorder(node: recordingMixer)

// Setup the output mixer - only pass the player NOT the mic
outputMixer = AKMixer(testMixer)

// Pass the output mixer to AudioKit
AudioKit.output = outputMixer

// Start AudioKit
do {
    try AudioKit.start()
} catch {
    print("AudioKit did not start! \(error)")
}

应用程序构建正常，但只要我触发recorder.record()，应用程序就会崩溃并显示以下消息：

必需条件为false：mixingDest。

我真的不想将麦克风传递给扬声器输出，但我想要录制它。

我希望能够通过“testPlayer”播放文件，通过扬声器收听，同时能够录制“testPlayer”和麦克风的输出，而无需通过麦克风将麦克风传回扬声器。

我确信这是可行的，但我不知道这些事情应该如何运作才能知道我做错了什么。

非常感谢任何帮助!!

Answer 1

好的，所以在与AudioKit的人交谈后，我发现问题是因为我的recordingMixer没有连接到AudioKit.output。为了通过混音器提取音频，需要将其连接到AudioKit.output。

为了使我的recordingMixer的输出静音，我必须创建一个静音的虚拟录音混音器，并将其传递给outputMixer。

请参阅下面的更新示例：

// Session settings
do {
    AKSettings.bufferLength = .short
    try AKSettings.setSession(category: .playAndRecord, with: .allowBluetoothA2DP)
} catch {
    AKLog("Could not set session category.")
}

AKSettings.defaultToSpeaker = true

// Setup the microphone
micMixer = AKMixer(mic)
micBooster = AKBooster(micMixer)

// Load the test player
let path = Bundle.main.path(forResource: "audio1", ofType: ".wav")
let url = URL(fileURLWithPath: path!)
testPlayer = AKPlayer(url: url)
testPlayer?.isLooping = true

// Setup the test mixer
testMixer = AKMixer(testPlayer)

// Pass the output from the player AND the mic into the recorder
recordingMixer = AKMixer(testMixer, micBooster)
recorder = try? AKNodeRecorder(node: recordingMixer)

// Create a muted mixer for recording audio, so AudioKit will pull audio through the recording Mixer, but not play it through the output.
recordingDummyMixer = AKMixer(recordingMixer)
recordingDummyMixer.volume = 0

outputMixer = AKMixer(testMixer, recordingDummyMixer)

// Pass the output mixer to AudioKit
AudioKit.output = outputMixer

// Start AudioKit
do {
    try AudioKit.start()
} catch {
    print("AudioKit did not start! \(error)")
}

我希望将来可以帮助某人。

AudioKit录音机设置与麦克风崩溃“必需条件是假的：mixingDest”

1 个答案: