我使用iOS 10內置的語音識別功能來竊聽一個小項目。我使用設備的麥克風獲得了工作成果,我的演講被非常準確地識別出來。SFSpeechRecognizer - 檢測話語的結尾
我的問題是識別任務回調呼籲每個可用的部分轉錄,我希望它檢測人停止了講話,並呼籲與isFinal
屬性設置爲true回調。它沒有發生 - 應用程序無限期地在監聽。
是否SFSpeechRecognizer
有史以來能夠檢測到句子結束?
這是我的代碼 - 它基於互聯網上找到的例子,它主要是從麥克風源識別的樣板。 我通過添加識別taskHint
對其進行了修改。我也將shouldReportPartialResults
設置爲false,但似乎它已被忽略。
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()
recognitionRequest?.shouldReportPartialResults = false
recognitionRequest?.taskHint = .search
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 {
print("RECOGNIZED \(result?.bestTranscription.formattedString)")
self.transcriptLabel.text = result?.bestTranscription.formattedString
isFinal = (result?.isFinal)!
}
if error != nil || isFinal {
self.state = .Idle
self.audioEngine.stop()
inputNode.removeTap(onBus: 0)
self.recognitionRequest = nil
self.recognitionTask = nil
self.micButton.isEnabled = true
self.say(text: "OK. Let me see.")
}
})
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.")
}
transcriptLabel.text = "Say something, I'm listening!"
state = .Listening
}
爲什麼蘋果發現這個凝灰岩?只需要實現有用的委託方法。 – Ganesh