Question

我的应用程序使用Android的SpeechRecognizer类，并且几天前在几台设备上运行良好。在我的三星S3和我的LG-E980上，应用程序变得非常缓慢。我的其他设备不受影响。出现此问题是因为onBeginningOfSpeech和onEndOfSpeech之间有大约7秒的等待时间。我已尝试在互联网上使用源代码的其他应用程序，结果相同。是否有人知道可能导致此问题的最新软件更改？我的三星S3运行Android 5.0.1运行良好的三星运行4.1.2

键盘麦克风没有延迟。

Answer 1

我很确定这是因为谷歌应用程序（谷歌搜索）版本6减速。我在使用以下代码测试9台设备后发现了这一点：

package com.example.speechtest;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

public class MainActivity extends Activity implements RecognitionListener {
    static String speechTestTag = "SpeechText";
    MyView myView;
    SpeechRecognizer speechRecognizer;
    Intent speechIntent;
    boolean processingSpeech = false;
    long startTime;
    long speechTime;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onCreate");
        myView = new MyView(this);
        setContentView(myView);
        speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
        speechRecognizer.setRecognitionListener(this);
        speechIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        speechIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
//      speechIntent.putExtra(RecognizerIntent.EXTRA_SPEECH_INPUT_MINIMUM_LENGTH_MILLIS, 1100); // this line is ignored
//      speechIntent.putExtra(RecognizerIntent.EXTRA_SPEECH_INPUT_COMPLETE_SILENCE_LENGTH_MILLIS, 0); // this line is ignored
    }

    class MyView extends LinearLayout {
        TextView speechTimeView;
        TextView textView;
        Button talkButton;

        public MyView(Context context) {
            super(context);
            setOrientation(LinearLayout.VERTICAL);
            speechTimeView = new TextView(context);
            speechTimeView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
            textView = new TextView(context);
            textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
            talkButton = new Button(context);
            talkButton.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
            talkButton.setText("Touch to Talk");
            talkButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if(BuildConfig.DEBUG) Log.d(speechTestTag, "talkButton calling startListening - processingSpeech = " + processingSpeech);
                    talkButton.setText("Speak");
                    speechTimeView.setText(" "); //speechTimeView.invalidate();
                    textView.setText(" "); //textView.invalidate();
                    speechRecognizer.startListening(speechIntent);
                }
            });
            addView(speechTimeView);
            addView(textView);
            addView(talkButton);
        }
    }

        @Override
        public void onReadyForSpeech(Bundle params) {
            if(BuildConfig.DEBUG) Log.d(speechTestTag, "onReadyForSpeech");
            processingSpeech = true;
        }

    @Override
    public void onBeginningOfSpeech() {
        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onBeginningOfSpeech");
        startTime = System.currentTimeMillis();
    }

    @Override
    public void onRmsChanged(float rmsdB) {
////        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onRmsChanged - new rmssB = " + rmsdB); // too much of this on some devices
    }

    @Override
    public void onBufferReceived(byte[] buffer) {
        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onBufferReceived");
    }

    @Override
    public void onEndOfSpeech() {
        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onEndOfSpeech");
    long     endTime = System.currentTimeMillis();
        speechTime = endTime - startTime;
        myView.speechTimeView.setText("SpeechTime: " + speechTime + " Milliseconds");
    }

    @Override
    public void onError(int error) {
        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onError error: " + error + " processingSpeech = " + processingSpeech + " speechTime = " + speechTime);
        if(error == 7 && (!processingSpeech || speechTime < 1700)) {
            if(BuildConfig.DEBUG) Log.d(speechTestTag, "onError startListening");
            speechRecognizer.startListening(speechIntent);
        } else {
            if(BuildConfig.DEBUG) Log.d(speechTestTag, "onError displaying error");
            myView.textView.setText("< " + "ERROR " + error + " >");
            myView.talkButton.setText("Touch to Talk");
        }
        processingSpeech = false;
    }

    @Override
    public void onResults(Bundle results) {
        ArrayList<String> recognitionResults = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        String myResult = recognitionResults.get(0);
        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onResults - <" + myResult + ">");
        myView.textView.setText(myResult);
        myView.talkButton.setText("Touch to Talk");
        processingSpeech = false;
    }

    @Override
    public void onPartialResults(Bundle partialResults) {
        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onPartialResults");
    }

    @Override
    public void onEvent(int eventType, Bundle params) {
        if(BuildConfig.DEBUG) Log.d(speechTestTag, "onEvent");
    }
}

此代码是自包含的，不需要任何XML布局。

不要忘记添加

<uses-permission android:name="android.permission.RECORD_AUDIO"/>

到您的清单。

此外，Google App的第3版支持离线语音识别。版本4没有。我没有版本5可以告诉。版本6.0.23.21确实支持离线，但速度非常慢。问题是从onBeginningOfSpeech到onOndOfSpeech需要的时间。在语音停止后，它会一直等待大约5秒钟，然后才能确定不再有语音并继续进行识别（在线和离线）。即使您将其设为零或负数，也会忽略EXTRA_SPEECH_INPUT_COMPLETE_SILENCE_LENGTH_MILLIS参数。

我的三部手机都有谷歌应用程序版本6，但我能够恢复到以前的所有版本，问题就消失了。

ERROR 7还有另一个问题，我用boolean flag processingSpeech解决了这个问题。

自谷歌应用版本6以来，Android语音识别器速度较慢

1 个答案: