[英]Siri Kit (Speech to text) disabling my TTS (Text to speech) iOS
我正在嘗試與Siri Kit中的“ 語音轉文本”一起運行“語音轉文本 (AVSpeechSynthesizer)”,但是我對此一無所知。
在我運行代碼以執行STT之前,我的TTS可以正常工作,之后我的TTS不再起作用。 我調試了代碼,並且在執行代碼期間沒有發生任何錯誤,但是我的文本沒有轉換為語音。 我想我的STT會以某種方式禁用輸出麥克風,這就是為什么TTS不再將文本轉換為語音的原因,那只是一個理論。 操作:我的TTS停止工作,但我的STT正常運行
有小費嗎?
這是我的viewController的代碼:
@IBOutlet weak var microphoneButton: UIButton!
//text to speech
let speechSynthesizer = AVSpeechSynthesizer()
//speech to text
private var speechRecognizer: SFSpeechRecognizer!
private var recognitionRequest: SFSpeechAudioBufferRecognitionRequest?
private var recognitionTask: SFSpeechRecognitionTask?
private var audioEngine = AVAudioEngine()
@IBAction func textToSpeech(_ sender: Any) {
if let word = wordTextField.text{
if !speechSynthesizer.isSpeaking {
//get current dictionary
let dictionary = fetchSelectedDictionary()
//get current language
let language = languagesWithCodes[(dictionary?.language)!]
let speechUtterance = AVSpeechUtterance(string: word)
speechUtterance.voice = AVSpeechSynthesisVoice(language: language)
speechUtterance.rate = 0.4
//speechUtterance.pitchMultiplier = pitch
//speechUtterance.volume = volume
speechSynthesizer.speak(speechUtterance)
}
else{
speechSynthesizer.continueSpeaking()
}
}
}
@IBAction func speechToText(_ sender: Any) {
if audioEngine.isRunning {
audioEngine.stop()
recognitionRequest?.endAudio()
microphoneButton.isEnabled = false
microphoneButton.setTitle("Start Recording", for: .normal)
} else {
startRecording()
microphoneButton.setTitle("Stop Recording", for: .normal)
}
}
func startRecording() {
if recognitionTask != nil {
recognitionTask?.cancel()
recognitionTask = nil
}
let audioSession = AVAudioSession.sharedInstance()
do {
try audioSession.setCategory(AVAudioSessionCategoryRecord)
try audioSession.setMode(AVAudioSessionModeMeasurement)
try audioSession.setActive(true, with: .notifyOthersOnDeactivation)
} catch {
print("audioSession properties weren't set because of an error.")
}
recognitionRequest = SFSpeechAudioBufferRecognitionRequest()
guard let inputNode = audioEngine.inputNode else {
fatalError("Audio engine has no input node")
}
guard let recognitionRequest = recognitionRequest else {
fatalError("Unable to create an SFSpeechAudioBufferRecognitionRequest object")
}
recognitionRequest.shouldReportPartialResults = true
recognitionTask = speechRecognizer?.recognitionTask(with: recognitionRequest, resultHandler: { (result, error) in
var isFinal = false
if result != nil {
self.wordTextField.text = result?.bestTranscription.formattedString
isFinal = (result?.isFinal)!
}
if error != nil || isFinal {
self.audioEngine.stop()
inputNode.removeTap(onBus: 0)
self.recognitionRequest = nil
self.recognitionTask = nil
self.microphoneButton.isEnabled = true
}
})
let recordingFormat = inputNode.outputFormat(forBus: 0)
inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { (buffer, when) in
self.recognitionRequest?.append(buffer)
}
audioEngine.prepare()
do {
try audioEngine.start()
} catch {
print("audioEngine couldn't start because of an error.")
}
wordTextField.text = "Say something, I'm listening!"
}
}
可能是因為您的音頻會話處於“錄制”模式,所以您有2種解決方案,首先是將try audioSession.setCategory(AVAudioSessionCategoryRecord)設置為AVAudioSessionCategoryPlayAndRecord(這將起作用),但是一種更簡潔的方法是獲得一個單獨的函數來聲明內容,然后將您的AVAudioSessionCategory設置為AVAudioSessionCategoryPlayback
希望這會有所幫助。
這行:
try audioSession.setMode(AVAudioSessionModeMeasurement)
可能是原因。 可能會導致音量調得太低,聽起來好像已經關閉。 嘗試:
try audioSession.setMode(AVAudioSessionModeDefault)
看看是否可行。
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