網絡語音API - Android

Question

我想在Android應用中實現類似Web Speech API（僅適用於Chrome）的功能。

我的意思是，一個實時語音文本應用程序。

有沒有任何框架或庫來實現這一目標？

Answer 1

我只是在一個應用程序，使用谷歌的文字， 他們是非常準確的...雖然我做了一個類，使得改進的結果。 您需要添加權限才能在清單中使用Internet。

這裏是從我的應用程序，照顧STT類。順便說一下，有可能不使用谷歌的默認對話框 ，如果你感興趣，我有一個例子。

import java.util.ArrayList; 
import java.util.List; 

import android.app.Activity; 
import android.content.Intent; 
import android.content.pm.PackageManager; 
import android.content.pm.ResolveInfo; 
import android.speech.RecognizerIntent; 
public class STT 
{ 
    Activity theCallerActivity; 
    static final int THREE_RESULTS=3; 


boolean audioOk=true; 
boolean clienOk=true; 
boolean networkOk=true; 
boolean matchOk=true; 
boolean serverOk=true; 

private static final int VOICE_RECOGNITION_REQUEST_CODE = 9999; 

public STT(Activity activity) 
{ 
    theCallerActivity=activity; 
} 

public boolean isVoiceRecognitionAvailable() // Check if voice recognition is present 
{ 
    PackageManager pm = theCallerActivity.getPackageManager(); 
    List<ResolveInfo> activities = pm.queryIntentActivities(new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0); 
    if (activities.size() == 0) 
     return false; 
    return true;  
} 
public void speak() 
{ 
    final Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); 
    intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getClass().getPackage().getName()); 
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH); 
    intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, THREE_RESULTS); 
    new Thread() 
    { 
     public void run() 
     { 
      theCallerActivity.startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE); 
     } 
    }.start(); 
} 

public String toPerformInOnActivityResult(int requestCode,int resultCode,Intent data) 
{ 
    ArrayList<String> textMatchList; 

    if (requestCode == VOICE_RECOGNITION_REQUEST_CODE) 
    { 
     if(resultCode == Activity.RESULT_OK) 
     { 
      textMatchList=data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS); 


      if (!textMatchList.isEmpty()) 
      { 
       return textMatchList.get(0); 

      } 
      else if(resultCode == RecognizerIntent.RESULT_AUDIO_ERROR) 
       audioOk=false; 
      else if(resultCode == RecognizerIntent.RESULT_CLIENT_ERROR) 
       clienOk=false; 
      else if(resultCode == RecognizerIntent.RESULT_NETWORK_ERROR) 
       networkOk=false; 
      else if(resultCode == RecognizerIntent.RESULT_NO_MATCH) 
       matchOk=false; 
      else if(resultCode == RecognizerIntent.RESULT_SERVER_ERROR) 
       serverOk=false; 

     } 

    } 
    return null; 
} 

}

有樂趣...

這裏是如何使用STT沒有默認對話框的例子：

package com.example.speech_to_text_experiments; 

import java.util.ArrayList; 

import android.os.Bundle; 
import android.app.Activity; 
import android.content.Intent; 
import android.speech.RecognitionListener; 
import android.speech.RecognizerIntent; 
import android.speech.SpeechRecognizer; 
import android.view.Menu; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.ListView; 
import android.widget.TextView; 
import android.widget.Toast; 

public class MainActivity extends Activity implements RecognitionListener 
{ 

private ListView wordsList; 
Button btn; 
TextView tv; 
private SpeechRecognizer mSpeechRecognizer; 
private Intent mSpeechRecognizerIntent; 


protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(this); 
    mSpeechRecognizer.setRecognitionListener(this); 
    mSpeechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); 
    mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, 
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM); 
    mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, 
            this.getPackageName()); 
    btn=(Button)findViewById(R.id.button1); 

    wordsList = (ListView) findViewById(R.id.listView1); 

    mSpeechRecognizer.setRecognitionListener(new RecognitionListener() { 

    @Override 
    public void onRmsChanged(float rmsdB) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onResults(Bundle results) { 
     // TODO Auto-generated method stub 
     ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION); 


     wordsList.setAdapter(new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, matches)); 

      Toast.makeText(MainActivity.this, "Recognision OK!!!", Toast.LENGTH_SHORT).show(); 

    } 

    @Override 
    public void onReadyForSpeech(Bundle params) { 
     // TODO Auto-generated method stub 
     Toast.makeText(MainActivity.this, "Voice recording starts", Toast.LENGTH_SHORT).show(); 
    } 

    @Override 
    public void onPartialResults(Bundle partialResults) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onEvent(int eventType, Bundle params) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onError(int error) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onEndOfSpeech() { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onBufferReceived(byte[] buffer) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onBeginningOfSpeech() { 
     // TODO Auto-generated method stub 

    } 
}); 



    btn.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 

      mSpeechRecognizer.startListening(mSpeechRecognizerIntent); 
     } 
    }); 



} 


    public void onBeginningOfSpeech(){ } 

     public void onBufferReceived(byte[] buffer){ } 

     public void onEndOfSpeech(){ } 

     public void onError(int error){ 

      //mSpeechRecognizer.startListening(mSpeechRecognizerIntent); 

    } 

    public void onEvent(int eventType, Bundle params){ } 


    public void onPartialResults(Bundle partialResults){ } 


    public void onReadyForSpeech(Bundle params){ 




    } 

    public void onResults(Bundle results) 
    { 

     ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION); 


     wordsList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, matches)); 

      Toast.makeText(MainActivity.this, "Recognision OK!!!", Toast.LENGTH_SHORT).show(); 

    } 

    public void onRmsChanged(float rmsdB) { } 

    }