android语音识别方法二：应用程序自己调用语音识别库
android 语音识别方法二：应用程序自己调用语音识别库
#移动开发 #Android
1. 说明
以下例程功能为：应用程序自身调用语言识别函数，程序以循环方式等待录音并识别后的字串。
2. 本例参考自 android 代码： frameworks/base/core/java/android/speech/srec/Recognizer.java 中注释部分
3. 可从此处下载可独立运行的代码： [http://download.csdn.net/source/2591401
](http://download.csdn.net/source/2591401)
4. 核心代码及说明
_ package com.android.mystt2; _
_ _
_ import android.app.Activity; _
_ import android.content.Intent; _
_ import android.os.Bundle; _
_ import android.widget.Button; _
_ import android.widget.TextView; _
_ import android.view.View; _
_ import android.view.View.OnClickListener; _
_ _
_ import android.speech.srec.Recognizer; _
_ import android.speech.srec.MicrophoneInputStream; _
_ import java.io.InputStream; _
_ import java.io.IOException; _
_ import android.util.Log; _
_ _
_ public class MyStt2Activity extends Activity implements OnClickListener { _
_ private TextView mText; _
_ private static final String TAG = "MyStt3Activity"; _
_ _
_ @Override _
_ public void onCreate(Bundle savedInstanceState) { _
_ super.onCreate(savedInstanceState); _
_ setContentView(R.layout.main); _
_ Button speakButton = (Button) findViewById(R.id.btn_speak); // _ _ 识别扭按 _
__
_ mText = (TextView) findViewById(R.id.text); // _ _ 显示识别后的字串 _ __
_ speakButton.setOnClickListener(this); _
_ } _
_ _
_ public void onClick(View v) { _
_ if (v.getId() == R.id.btn_speak) { _
_ test(); _
_ } _
_ } _
_ _
_ void test() { _
_ try { _
_ InputStream audio = new MicrophoneInputStream(11025, 11025 * 5); // _ _
设置输入参数 _ __
_ String cdir = Recognizer.getConfigDir(null); // _ _ 获取语音识别配置目录 _ __
_ Recognizer recognizer = new Recognizer(cdir + "/baseline11k.par"); _
_ Recognizer.Grammar grammar = recognizer.new Grammar(cdir _
_ + "/grammars/VoiceDialer.g2g"); _
_ grammar.setupRecognizer(); _
_ grammar.resetAllSlots(); _
_ grammar.compile(); _
_ recognizer.start(); // _ _ 开始识别 _ __
_ while (true) { // _ _ 循环等待识别结果 _ __
_ switch (recognizer.advance()) { _
_ case Recognizer.EVENT_INCOMPLETE: _
_ case Recognizer.EVENT_STARTED: _
_ case Recognizer.EVENT_START_OF_VOICING: _
_ case Recognizer.EVENT_END_OF_VOICING: _
_ continue; // _ _ 未完成，继续等待识别结果 _ __
_ case Recognizer.EVENT_RECOGNITION_RESULT: _
_ for (int i = 0; i < recognizer.getResultCount(); i++) { _
_ String result = recognizer.getResult(i, _
_ Recognizer.KEY_LITERAL); _
_ Log.d(TAG, "result " + result); _
_ mText.setText(result); _
_ } // _ _ 识别到字串，显示并退出循环 _ __
_ break; _
_ case Recognizer.EVENT_NEED_MORE_AUDIO: _
_ recognizer.putAudio(audio) // _ _ 需要更多音频数据 _ ;
_ continue; _
_ default: _
_ break; _
_ } _
_ break; _
_ } _
_ recognizer.stop(); _
_ recognizer.destroy(); _
_ audio.close(); // _ _ 回收资源 _ __
_ } catch (IOException e) { _
_ Lo _ _ g.d(TAG, "error", e); _
_ _ _ mText.setText("error " + e); _
_ } _
_ } _
_ } _
__
_
_ (转载请注明出处: http://xy0811.spaces.live.com/
) _
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