如何在Google Recognitor Intent（语音识别）Android中增加语音收听时间

Question

我确实试过给下面这些额外的东西以毫秒为单位的时间

Recognizer Intent.EXTRA_SPEECH_INPUT_POSSIBLY_COMPLETE_SILENCE_LENGTH_MILLIS
Recognizer Intent.EXTRA_SPEECH_INPUT_COMPLETE_SILENCE_LENGTH_MILLIS
Recognizer Intent.EXTRA_SPEECH_INPUT_MINIMUM_LENGTH_MILLIS

但不影响语音收听时间！我现在得到的语音收听时间只有3秒！如何实现10秒的收听时间

Answer 1

它似乎只适用于以下ICS：https://stackoverflow.com/a/17675098/9427932

但您可以通过创建自己的类来定制google语音，并继承SpeechRecognitor，我在Xamarin Android上编写了这些代码，因此它与Android非常相似：

public class CustomRecognizer : Java.Lang.Object, IRecognitionListener, TextToSpeech.IOnInitListener
{
private SpeechRecognizer _speech;
private Intent _speechIntent;


public string Words;


public CustomRecognizer(Context _context)
{
    this._context = _context;
    Words = "";
    _speech = SpeechRecognizer.CreateSpeechRecognizer(this._context);
    _speech.SetRecognitionListener(this);
    _speechIntent = new Intent(RecognizerIntent.ActionRecognizeSpeech);
    _speechIntent.PutExtra(RecognizerIntent.ExtraLanguageModel, RecognizerIntent.LanguageModelFreeForm);
    _speechIntent.PutExtra(RecognizerIntent.ActionRecognizeSpeech, RecognizerIntent.ExtraPreferOffline);
    _speechIntent.PutExtra(RecognizerIntent.ExtraSpeechInputCompleteSilenceLengthMillis, 1000); 
    _speechIntent.PutExtra(RecognizerIntent.ExtraSpeechInputPossiblyCompleteSilenceLengthMillis, 1000);
    _speechIntent.PutExtra(RecognizerIntent.ExtraSpeechInputMinimumLengthMillis, 1500);
}

void startover()
{
    _speech.Destroy();
    _speech = SpeechRecognizer.CreateSpeechRecognizer(this._context);
    _speech.SetRecognitionListener(this);
    _speechIntent = new Intent(RecognizerIntent.ActionRecognizeSpeech);
    _speechIntent.PutExtra(RecognizerIntent.ExtraSpeechInputCompleteSilenceLengthMillis, 1000);
    _speechIntent.PutExtra(RecognizerIntent.ExtraSpeechInputPossiblyCompleteSilenceLengthMillis, 1000);
    _speechIntent.PutExtra(RecognizerIntent.ExtraSpeechInputMinimumLengthMillis, 1500);
StartListening();
}
public void StartListening()
{
    _speech.StartListening(_speechIntent);
}

public void StopListening()
{
    _speech.StopListening();
}

public void OnBeginningOfSpeech()
{

}

public void OnBufferReceived(byte[] buffer)
{
}

public void OnEndOfSpeech()
{

}

public void OnError([GeneratedEnum] SpeechRecognizerError error)
{
    Words = error.ToString();
    startover();
}

public void OnEvent(int eventType, Bundle @params)
{
}

public void OnPartialResults(Bundle partialResults)
{
}

public void OnReadyForSpeech(Bundle @params)
{
}

public void OnResults(Bundle results)
{

    var matches = results.GetStringArrayList(SpeechRecognizer.ResultsRecognition);
    if (matches == null)
        Words = "Null";
    else
        if (matches.Count != 0)
        Words = matches[0];
    else
        Words = "";

    //do anything you want for the result
    }
    startover();
}

public void OnRmsChanged(float rmsdB)
{

}

public void OnInit([GeneratedEnum] OperationResult status)
{
    if (status == OperationResult.Error)
        txtspeech.SetLanguage(Java.Util.Locale.Default);
}}

您可以在结束后调用startover（）立即开始录制，因此它看起来像一个“连续演讲”（在您的情况下为10秒）