我试图创建一个应用程序,记录用户的声音并同时将其转录。我使用AVFoundation和Speech框架来完成这项工作。问题在于苹果将转录时间限制为一分钟。所以,在这段时间之后,我应该回忆一下语音识别请求。问题是我也想同时录制声音。1分钟后不重新启动连续语音识别
有谁知道我该如何解决这个问题?
这是我使用的代码:
private func startRecording() throws {
// Cancel the previous task if it's running.
if let recognitionTask = recognitionTask {
recognitionTask.cancel()
self.recognitionTask = nil
}
try audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord, with: .allowBluetoothA2DP)
try audioSession.setMode(AVAudioSessionModeMeasurement)
try audioSession.setActive(true, with: .notifyOthersOnDeactivation)
recognitionRequest = SFSpeechAudioBufferRecognitionRequest()
guard let inputNode = audioEngine.inputNode else { fatalError("Audio engine has no input node") }
guard let recognitionRequest = recognitionRequest else { fatalError("Unable to created a SFSpeechAudioBufferRecognitionRequest object") }
// Configure request so that results are returned before audio recording is finished
recognitionRequest.shouldReportPartialResults = true
// A recognition task represents a speech recognition session.
// We keep a reference to the task so that it can be cancelled.
recognitionTask = speechRecognizer.recognitionTask(with: recognitionRequest) { result, error in
var isFinal = false
if result != nil {
if let result = result {
self.textView.text = result.bestTranscription.formattedString
}
isFinal = (result?.isFinal)!
if isFinal == true{
self.textView.text.append((result?.bestTranscription.formattedString)!)
}
}
if error != nil || isFinal {
print("Error: \(error)")
print("ifFinal: \(isFinal)")
self.audioEngine.stop()
inputNode.removeTap(onBus: 0)
self.recognitionRequest = nil
self.recognitionTask = nil
try! self.startRecording()
self.recordButton.isEnabled = true
self.recordButton.setTitle("Start Recording", for: [])
}
}
let recordingFormat = inputNode.outputFormat(forBus: 0)
inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { (buffer: AVAudioPCMBuffer, when: AVAudioTime) in
DispatchQueue.main.async {
self.recognitionRequest?.append(buffer)
self.writeBuffer(buffer)
}
}
if !audioEngine.isRunning {
audioEngine.prepare()
try audioEngine.start()
}
}
正如你可以从代码中看到,我提出的要求,我写在installTap方法的音频文件。因此,每次我必须重新开始录音时,我还要删除巴士上的水龙头。通过这种方式,我无法继续录制音频文件。
有什么我可以做的吗?任何解决方案备择方案?
你有答案吗? –