AVSpeechsynthesizer無法在api調用中快速運行

目前我正在開發一個演示應用程序，並且正在被分成3個部分 1.語音到文本（完成） 2.發送文本到服務器並獲取響應返回（使用API.ai）（完成） 3.文本到語音，響應消息轉換爲語音不工作。AVSpeechsynthesizer無法在api調用中快速運行

文本到語音不是在一個函數內部工作，誰可以給它增加更多的優先級。

這裏是代碼

@IBAction func startActionTapped(_ sender: Any) { 

    if audioEngine.isRunning { 
     audioEngine.stop() 
     recognitionRequest?.endAudio() 
     startButton.isEnabled = false 
     startButton.setTitle("Start", for: .normal) 

    } 

    else { 
     startRecording() 
     startButton.setTitle("Stop", for: .normal) 

     let loadingNotification = MBProgressHUD.showAdded(to: self.view, animated: true) 
     loadingNotification.mode = MBProgressHUDMode.indeterminate 
     loadingNotification.label.text = "Voice Recogninsing...." 

     DispatchQueue.main.asyncAfter(deadline: .now() + 10.0, execute: { 

      loadingNotification.label.text = "sending request to server...." 


      let request = ApiAI.shared().textRequest() 
      request?.query = ["turn on blue led"] 

      request?.setMappedCompletionBlockSuccess({ (request, response) in 
       let response = response as! AIResponse 

       if response.result.action == "light.led" { 

        if let parameters = response.result.parameters as? [String: AIResponseParameter] { 
         if let led = parameters["led"]?.stringValue { 

          switch led { 
          case "red": 
           print("color is red") 
          case "blue": 
           print("color is blue") 
          case "green": 
           print("color is green") 
          default: 
           print("color is :",led) 
          } 
          self.speechToText = "" 
         } 
        } 
       } else { 
        print("Invalid LED Color") 
       } 

       if let textResponse = response.result.fulfillment.speech { 
       print(textResponse) 
       loadingNotification.hide(animated: true) 
        DispatchQueue.global(qos: .userInitiated).async { 

         let synth = AVSpeechSynthesizer() 
         let utterance = AVSpeechUtterance(string: textResponse) 
         utterance.rate = AVSpeechUtteranceDefaultSpeechRate 
         let lang = "en-US" 

         utterance.voice = AVSpeechSynthesisVoice(language: lang) 
         synth.speak(utterance) 

        } 
       } 
      }, failure: { (request, error) in 
       print(error!) 
      }) 
      ApiAI.shared().enqueue(request) 
     }) 
    } 
    speechToText = "" 
}

不知道爲什麼文本到語音轉換工作。我的問題是文本到語音不適用於應用程序，我錯過了任何步驟？

let synth = AVSpeechSynthesizer() 
        let utterance = AVSpeechUtterance(string: textResponse) 
        utterance.rate = AVSpeechUtteranceDefaultSpeechRate 
        let lang = "en-US" 

        utterance.voice = AVSpeechSynthesisVoice(language: lang) 
        synth.speak(utterance)

來源

2017-04-10 Joe

嘗試在主隊列中運行代碼？ – chengsam

@chengsam無法正常工作 – Joe

嘗試使用簡單的按鈕點擊事件來實現TTS，它工作嗎？在簡單的按鈕點擊 – chengsam

更新的TTS地區代碼

do { 
    try AVAudioSession.sharedInstance().setCategory(
     AVAudioSessionCategoryPlayback, 
     with: AVAudioSessionCategoryOptions.mixWithOthers 
    ) 
    let utterance = AVSpeechUtterance(string: textResponse) 
    utterance.rate = AVSpeechUtteranceDefaultSpeechRate 
    let lang = "en-US" 
    self.synth.continueSpeaking() 
    utterance.voice = AVSpeechSynthesisVoice(language: lang) 
    self.synth.continueSpeaking() 
    self.synth.speak(utterance) 
    self.stopEngine() 
    self.startButton.isEnabled = true 
    self.startButton.setTitle("Start", for: .normal) 
} catch { 
    print(error) 
}

需要再次啓動音頻引擎。

來源

2017-04-11 10:19:52 Joe

AVSpeechsynthesizer無法在api調用中快速運行

回答

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