Android语音合成与语音识别

这里调用科大讯飞语音的API,语音云开放平台介绍：http://open.voicecloud.cn/

调用科大讯飞语音的API,需要加添库文件Msc.jar,添加libmsc.so文件,还需添加权限,具体步骤可参看SDK里的文档

参看开发的文档写了一个简单的语音合成和识别demo,图示如下

在EditText里输入文字,点击语音合成,可以实现文字转化为语音

点击语音合成,输入语音,识别的文字以提示的形式显示,并且显示在EditText中

主要代码如下,注意appid需要自己申请

package com.example.voice;

import java.util.ArrayList;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.iflytek.cloud.speech.*;

public class VoiceActivity extends Activity {
	private static final String APPID = "appid=52cddb99";
	private EditText et = null;
	private Button btn1 = null;
	private Button btn2 = null;
	String text = "";
	String temp="";

	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_voice);
		et = (EditText) findViewById(R.id.et);
		btn1 = (Button) findViewById(R.id.btn1);
		btn1.setOnClickListener(mylistener);
		btn2 = (Button) findViewById(R.id.btn2);
		btn2.setOnClickListener(mylistener);
	}

	private OnClickListener mylistener = new OnClickListener() {
		public void onClick(View v) {
			SpeechUser.getUser().login(VoiceActivity.this, null, null, APPID,
					loginListener);
			Button btn = (Button) v;
			switch (btn.getId()) {
			case R.id.btn1:
				SpeechSynthesizer mSpeechSynthesizer = SpeechSynthesizer
						.createSynthesizer(VoiceActivity.this);
				mSpeechSynthesizer.setParameter(SpeechConstant.VOICE_NAME,
						"xiaoyu");
				mSpeechSynthesizer.setParameter(SpeechConstant.SPEED, "50");
				mSpeechSynthesizer.startSpeaking(et.getText().toString(),
						mSynListener);
				break;
			case R.id.btn2:
				text = "";
				temp="";
				SpeechRecognizer recognizer = SpeechRecognizer
						.createRecognizer(VoiceActivity.this);
				recognizer.setParameter(SpeechConstant.DOMAIN, "iat");
				recognizer.setParameter(SpeechConstant.LANGUAGE, "zh_cn");
				recognizer.setParameter(SpeechConstant.ACCENT, "accent");
				recognizer.startListening(mRecoListener);
				break;
			}
		}
	};
	private SynthesizerListener mSynListener = new SynthesizerListener() {
		public void onBufferProgress(int arg0, int arg1, int arg2, String arg3) {
		}

		public void onCompleted(SpeechError arg0) {
		}

		public void onSpeakBegin() {
		}

		public void onSpeakPaused() {
		}

		public void onSpeakProgress(int arg0, int arg1, int arg2) {
		}

		public void onSpeakResumed() {
		}
	};
	private RecognizerListener mRecoListener = new RecognizerListener() {
		public void onBeginOfSpeech() {
		}

		public void onEndOfSpeech() {
		}

		public void onError(SpeechError error) {
			
		}

		public void onEvent(int arg0, int arg1, int arg2, String arg3) {
		}

		public void onVolumeChanged(int arg0) {
		}

		public void onResult(RecognizerResult results, boolean isLast) {
			//将解析后的字符串连在一起
			temp=results.getResultString();
			JsonParser json = new JsonParser();
			text+=json.parseIatResult(temp);
			if(isLast==true)
			{
				et.setText(text, null);
				Toast.makeText(VoiceActivity.this,text,Toast.LENGTH_LONG).show();
			}
		}
	};
	private SpeechListener loginListener = new SpeechListener() {
		public void onCompleted(SpeechError arg0) {
		}

		public void onData(byte[] arg0) {
		}

		public void onEvent(int arg0, Bundle arg1) {
		}
	};

	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.voice, menu);
		return true;
	}
}

布局文件

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".VoiceActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="VoiceApplication" />

    <EditText
        android:id="@+id/et"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="top"
        android:layout_weight="0.32" />

    <Button
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="0.03"
        android:text="语音合成" />
    
    <Button 
        android:id="@+id/btn2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="0.03"
        android:text="语音识别" />
       
</TableLayout>

解析Json格式的数据是参照讯飞的文档中的

package com.example.voice;

import org.json.JSONArray;
import org.json.JSONObject;
import org.json.JSONTokener;

import android.text.TextUtils;

//import com.iflytek.speech.ErrorCode;
//import com.iflytek.speech.SpeechError;
/**
 * 对云端返回的Json结果进行解析
 * 
 * @author iFlytek
 * @since 20131211
 */
public class JsonParser {

	/**
	 * 听写结果的Json格式解析
	 * 
	 * @param json
	 * @return
	 */
	public static String parseIatResult(String json) {
		if (TextUtils.isEmpty(json))
			return "";

		StringBuffer ret = new StringBuffer();
		try {
			JSONTokener tokener = new JSONTokener(json);
			JSONObject joResult = new JSONObject(tokener);

			JSONArray words = joResult.getJSONArray("ws");
			for (int i = 0; i < words.length(); i++) {
				// 听写结果词，默认使用第一个结果
				JSONArray items = words.getJSONObject(i).getJSONArray("cw");
				JSONObject obj = items.getJSONObject(0);
				ret.append(obj.getString("w"));
				// 如果需要多候选结果，解析数组其他字段
				// for(int j = 0; j < items.length(); j++)
				// {
				// JSONObject obj = items.getJSONObject(j);
				// ret.append(obj.getString("w"));
				// }
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return ret.toString();
	}
}

Android语音合成与语音识别