我正在使用iOS 10内置语音识别功能破解一个小项目。使用设备的麦克风可以获得工作结果,我的语音被非常准确地识别。
我的问题是,对于每个可用的部分转录,都会调用识别任务回调,并且我希望它检测有人停止讲话,并使用isFinal
属性设置为true来调用回调。这没有发生-应用无限期监听。SFSpeechRecognizer
是否能够检测句子结尾?
这是我的代码-它是基于Internet上的示例,它主要是从麦克风源中识别所需的样板。
我通过添加识别taskHint
对其进行了修改。我也将shouldReportPartialResults
设置为false,但似乎已被忽略。
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
}
最佳答案
当用户停止按预期讲话时,isFinal标志似乎没有变为真。我想这是Apple的通缉行为,因为“用户停止讲话”事件是未定义的事件。
我认为实现目标的最简单方法是执行以下操作:
audio session
的开头创建一个计时器:var timer = NSTimer.scheduledTimerWithTimeInterval(2, target: self, selector: "didFinishTalk", userInfo: nil, repeats: false)
当您在
recognitionTask
中获得新转录时,timer.invalidate()timer = NSTimer.scheduledTimerWithTimeInterval(2, target: self, selector: "didFinishTalk", userInfo: nil, repeats: false)
关于ios - SFSpeechRecognizer-检测话语结束,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/42530634/