Question

我的应用程序必须记录并识别用户的语音，并提供一些文本转语音功能。有点适合第一次录制会话，但显然在那之后就坏了（播放正常）。

我正在使用startRecording()进行录制，而stopRecording() 一种。停止录制并 b。设置AVAudioSession的播放类别（因此，用户将可以使用其airpods收听）。

我得到的是什么

语音识别仅在第一次工作，然后停止（不一致）。
语音识别在语音转文字之后永远无法工作。
我有很多这样的错误消息：AVAudioSessionPortImpl.mm:56:ValidateRequiredFields: Unknown selected data source for Port Speaker (type: Speaker)或AVAudioSessionPortImpl.mm:56:ValidateRequiredFields: Unknown selected data source for Port zzx’s AirPods (type: BluetoothA2DPOutput)

好的，代码。

    func startRecording() throws {

    guard speechRecogniser.isAvailable else {
        return
    }

    if let recognitionTask = recognitionTask {
        recognitionTask.cancel()
        self.recognitionTask = nil
    }

    guard SFSpeechRecognizer.authorizationStatus() == .authorized else {
        SFSpeechRecognizer.requestAuthorization({ _ in })
        return
    }

    let audioSession = AVAudioSession.sharedInstance()
    try audioSession.setCategory(AVAudioSession.Category.playAndRecord, mode: .spokenAudio, options: [.defaultToSpeaker])
    //I've tried to add bluetooth options here, but to no avail
    try audioSession.setActive(true, options: [.notifyOthersOnDeactivation])

    recognitionRequest = SFSpeechAudioBufferRecognitionRequest()

    let inputNode = audioEngine.inputNode

    guard let recognitionRequest = recognitionRequest else {
        throw SpeechControllerError.noAudioInput
    }

    recognitionTask = speechRecogniser.recognitionTask(with: recognitionRequest) { [unowned self] result, error in
        if let result = result {
            self.delegateSpeech?.speechController(self, didRecogniseText: result.bestTranscription.formattedString)
            self.nameLabel.text = result.bestTranscription.formattedString
            print(result.bestTranscription.formattedString)
        }

        if result?.isFinal ?? (error != nil) {
            inputNode.removeTap(onBus: self.inputNodeBus)
        }
    }

    let recordingFormat = inputNode.outputFormat(forBus: self.inputNodeBus)
    inputNode.installTap(onBus: self.inputNodeBus, bufferSize: 1024, format: recordingFormat) { (buffer: AVAudioPCMBuffer, when: AVAudioTime) in
        self.recognitionRequest?.append(buffer)
    }

    audioEngine.prepare()
    try audioEngine.start()
    }

和stopRecording（）

func stopRecording() {
    audioEngine.stop()
    recognitionRequest?.endAudio()

    let audioSession = AVAudioSession.sharedInstance()

    do {
        try audioSession.setCategory(AVAudioSession.Category.playback, mode: .default, options: [.allowBluetooth, .allowBluetoothA2DP, .defaultToSpeaker])
//if I don't do this, my app will just _lose_ airpods and will use speaker for playback after the first recording session
        try audioSession.setActive(false, options: [.notifyOthersOnDeactivation])
//Set to false because I don't need this anymore

    } catch {

    }    
}

很显然，我在这里做错了什么，但是怎么办？

使用Airpods和奇怪的错误进行记录/播放

0 个答案: