将语音识别限制为字母数字单词

Question

我想使用语音重新认知来处理应用程序中的命令。我知道在我的应用程序中的任何给定点，在该点有效的命令是什么，因此希望限制语音重新认知匹配的结果。

我的意思是在我的应用程序中...有效的单词只有数字加字母。我的意思是像A13FG6之类的数字。

我希望能够将语音识别限制为仅尝试与字母数字单词匹配。。严格限制词汇量将增加其成功的机会。。

如何修改给定的代码以满足我的需求

提前感谢。。

import java.util.ArrayList;

import android.app.Activity;
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.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

    private TextView mText;
    private SpeechRecognizer sr;
    private static final String TAG = "MyStt3Activity";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button speakButton = (Button) findViewById(R.id.btn_speak);
        mText = (TextView) findViewById(R.id.textView1);

        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
       intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
           getClass().getPackage().getName());

        SpeechRecognizer recognizer = SpeechRecognizer
                .createSpeechRecognizer(this.getApplicationContext());
        RecognitionListener listener = new RecognitionListener() {
            @Override
            public void onResults(Bundle results) {
                ArrayList<String> voiceResults = results
                        .getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
                if (voiceResults == null) {
                    Log.e(TAG, "No voice results");
                } else {
                    Log.d(TAG, "Printing matches: ");
                    for (String match : voiceResults) {
                        Log.d(TAG, match);
                        mText.setText("results: " + match);
                    }
                }
            }

            @Override
            public void onReadyForSpeech(Bundle params) {
                Log.d(TAG, "Ready for speech");
            }

            @Override
            public void onError(int error) {
                Log.d(TAG,
                        "Error listening for speech: " + error);
            }

            @Override
            public void onBeginningOfSpeech() {
                Log.d(TAG, "Speech starting");
            }

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

            }

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

            }

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

            }

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

            }

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

            }
        };
        recognizer.setRecognitionListener(listener);
        recognizer.startListening(intent);


/*      speakButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                Intent intent = new Intent(
                        RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
                // intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
                intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US");
                intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
                        getClass().getPackage().getName());

                intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 5);
                sr.startListening(intent);

                // startActivityForResult(intent, 1010);
                Log.i("111111", "11111111");
            }
        });*/
    }
}

Answer 1

您不能在Android Speech API中限制识别，它不支持语法。但是，您可以尝试CMUSphinx。请参阅链接下的示例，您可以定义仅使用字母数字的语法，它将离线工作，因此响应将非常快，您也可以调整准确性以获得最佳匹配。