百度语音识别Demo -- 简单应用

先到百度语音官网上查看集成指南



然后再去下载语音识别-离在线融合SDK(bd_speech_sdk_asr_v3.0.3.20170801_60da871.zip)



直接参考SDK中的ActivityMiniRecog类

这里，我就直接上代码了，我是在Android Studio 2.3.3 平台上编译的

1、app\build.gradle

apply plugin: 'com.android.application'

android {
compileSdkVersion 25
buildToolsVersion "26.0.1"
defaultConfig {
applicationId "com.sky.baiduspeechdemo"
minSdkVersion 15
targetSdkVersion 25
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
//compile fileTree(dir: 'libs', include: ['*.jar'])
compile fileTree(exclude: '*.bak', dir: 'libs')
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.google.code.gson:gson:2.8.2'
}

2、AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.sky.baiduspeechdemo">

<!-- begin: baidu speech sdk  权限 -->
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- end: baidu speech sdk  权限 -->

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<!-- APP_ID API_KEY SECRET_KEY-->
<meta-data
android:name="com.baidu.speech.APP_ID"
android:value="替换成你申请的AppID"/>
<meta-data
android:name="com.baidu.speech.API_KEY"
android:value="替换成你申请的API Key" />
<meta-data
android:name="com.baidu.speech.SECRET_KEY"
android:value="替换成你申请的Secret Key" />
<service
android:name="com.baidu.speech.VoiceRecognitionService"
android:exported="false" />

<activity android:name=".MainActivity"
android:configChanges="orientation|keyboardHidden|screenLayout"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

</manifest>

3、将SDK中的app/libs/bdasr_V3_20170801_60da871.jar 复制到您的项目的同名目录中。

4、将SDK中的app/src/main/jniLibs 下armeabi等5个目录，复制到您的项目的同名目录中。



5、activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.sky.baiduspeechdemo.MainActivity">

<Button
android:id="@+id/btnStartRecord"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/start_record"/>
<Button
android:id="@+id/btnStopRecord"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/stop_record"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:orientation="vertical">
<View
android:layout_width="match_parent"
android:layout_height="3dp"
android:background="#000"/>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tvResult"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/parse_process" />
</ScrollView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical">
<View
android:layout_width="match_parent"
android:layout_height="3dp"
android:background="#000"/>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tvParseResult"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/parse_result" />
</ScrollView>
</LinearLayout>
</LinearLayout>

6、MainActivity.java

package com.sky.baiduspeechdemo;

import android.Manifest;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import com.baidu.speech.EventListener;
import com.baidu.speech.EventManager;
import com.baidu.speech.EventManagerFactory;
import com.baidu.speech.asr.SpeechConstant;
import com.google.gson.Gson;
import com.sky.baiduspeechdemo.asrfinishjson.AsrFinishJsonData;
import com.sky.baiduspeechdemo.asrpartialjson.AsrPartialJsonData;

import org.json.JSONObject;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.Map;

public class MainActivity extends AppCompatActivity implements EventListener {

private static final String TAG = "MainActivity";

private Button btnStartRecord;
private Button btnStopRecord;
private TextView tvResult;
private TextView tvParseResult;

private EventManager asr;

private boolean logTime = true;

private String final_result;

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

initView();
initPermission();
asr = EventManagerFactory.create(this, "asr");
asr.registerListener(this); //  EventListener 中 onEvent方法

btnStartRecord.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
start();
}
});
btnStopRecord.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
stop();
}
});
}

private void initView() {
tvResult = (TextView) findViewById(R.id.tvResult);
tvParseResult = (TextView) findViewById(R.id.tvParseResult);
btnStartRecord = (Button) findViewById(R.id.btnStartRecord);
btnStopRecord = (Button) findViewById(R.id.btnStopRecord);
btnStopRecord.setVisibility(View.GONE);
}

/**
* android 6.0 以上需要动态申请权限
*/
private void initPermission() {
String permissions[] = {Manifest.permission.RECORD_AUDIO,
Manifest.permission.ACCESS_NETWORK_STATE,
Manifest.permission.INTERNET,
Manifest.permission.READ_PHONE_STATE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
};

ArrayList<String> toApplyList = new ArrayList<String>();

for (String perm :permissions){
if (PackageManager.PERMISSION_GRANTED != ContextCompat.checkSelfPermission(this, perm)) {
toApplyList.add(perm);
//进入到这里代表没有权限.

}
}
String tmpList[] = new String[toApplyList.size()];
if (!toApplyList.isEmpty()){
ActivityCompat.requestPermissions(this, toApplyList.toArray(tmpList), 123);
}

}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
// 此处为android 6.0以上动态授权的回调，用户自行实现。
}

/*
* EventListener  回调方法
* name:回调事件
* params: JSON数据，其格式如下：
*
* */
@Override
public void onEvent(String name, String params, byte[] data, int offset, int length) {
String result = "";

if (length > 0 && data.length > 0) {
result += ", 语义解析结果：" + new String(data, offset, length);
}

if (name.equals(SpeechConstant.CALLBACK_EVENT_ASR_READY)) {
// 引擎准备就绪，可以开始说话
result += "引擎准备就绪，可以开始说话";

} else if (name.equals(SpeechConstant.CALLBACK_EVENT_ASR_BEGIN)) {
// 检测到用户的已经开始说话
result += "检测到用户的已经开始说话";

} else if (name.equals(SpeechConstant.CALLBACK_EVENT_ASR_END)) {
// 检测到用户的已经停止说话
result += "检测到用户的已经停止说话";
if (params != null && !params.isEmpty()) {
result += "params :" + params + "\n";
}
} else if (name.equals(SpeechConstant.CALLBACK_EVENT_ASR_PARTIAL)) {
// 临时识别结果, 长语音模式需要从此消息中取出结果
result += "识别临时识别结果";
if (params != null && !params.isEmpty()) {
result += "params :" + params + "\n";
}
//            Log.d(TAG, "Temp Params:"+params);
parseAsrPartialJsonData(params);
} else if (name.equals(SpeechConstant.CALLBACK_EVENT_ASR_FINISH)) {
// 识别结束， 最终识别结果或可能的错误
result += "识别结束";
btnStartRecord.setEnabled(true);
asr.send(SpeechConstant.ASR_STOP, null, null, 0, 0);
if (params != null && !params.isEmpty()) {
result += "params :" + params + "\n";
}
Log.d(TAG, "Result Params:"+params);
parseAsrFinishJsonData(params);
}
printResult(result);
}

private void printResult(String text) {
tvResult.append(text + "\n");
}

private void start() {
tvResult.setText("");
btnStartRecord.setEnabled(false)
cf09
;
Map<String, Object> params = new LinkedHashMap<String, Object>();
String event = null;
event = SpeechConstant.ASR_START;
params.put(SpeechConstant.PID, 1536); // 默认1536
params.put(SpeechConstant.DECODER, 0); // 纯在线(默认)
params.put(SpeechConstant.VAD, SpeechConstant.VAD_DNN); // 语音活动检测
params.put(SpeechConstant.VAD_ENDPOINT_TIMEOUT, 2000); // 不开启长语音。开启VAD尾点检测，即静音判断的毫秒数。建议设置800ms-3000ms
params.put(SpeechConstant.ACCEPT_AUDIO_DATA, false);// 是否需要语音音频数据回调
params.put(SpeechConstant.ACCEPT_AUDIO_VOLUME, false);// 是否需要语音音量数据回调

String json = null; //可以替换成自己的json
json = new JSONObject(params).toString(); // 这里可以替换成你需要测试的json
asr.send(event, json, null, 0, 0);
printResult("输入参数：" + json);
}

private void stop() {
asr.send(SpeechConstant.ASR_STOP, null, null, 0, 0);
}

@Override
protected void onDestroy() {
super.onDestroy();
asr.send(SpeechConstant.ASR_CANCEL, "{}", null, 0, 0);
}

private void parseAsrPartialJsonData(String data) {
Log.d(TAG, "parseAsrPartialJsonData data:"+data);
Gson gson = new Gson();
AsrPartialJsonData jsonData = gson.fromJson(data, AsrPartialJsonData.class);
String resultType = jsonData.getResult_type();
Log.d(TAG, "resultType:"+resultType);
if(resultType != null && resultType.equals("final_result")){
final_result = jsonData.getBest_result();
//            tvParseResult.setText("解析结果：" + final_result);
}
}

private void parseAsrFinishJsonData(String data) {
Log.d(TAG, "parseAsrFinishJsonData data:"+data);
Gson gson = new Gson();
AsrFinishJsonData jsonData = gson.fromJson(data, AsrFinishJsonData.class);
String desc = jsonData.getDesc();
if(desc !=null && desc.equals("Speech Recognize success.")){
tvParseResult.setText("解析结果:" + final_result);
}else{
String errorCode = "\n错误码:" + jsonData.getError();
String errorSubCode = "\n错误子码:"+ jsonData.getSub_error();
String errorResult = errorCode + errorSubCode;
tvParseResult.setText("解析错误,原因是:" + desc + "\n" + errorResult);
}
}
}

7、asrfinishjson/AsrFinishJsonData.java

package com.sky.baiduspeechdemo.asrfinishjson;

public class AsrFinishJsonData {
private String error;
private String sub_error;
private String desc;
private OriginResult origin_result;

public String getError() {
return error;
}

public String getSub_error() {
return sub_error;
}

public String getDesc() {
return desc;
}

public OriginResult getOrigin_result() {
return origin_result;
}
}

8、asrfinishjson\OriginResult.java

package com.sky.baiduspeechdemo.asrfinishjson;

public class OriginResult {
private String error;
private String sub_error;
private String sn;
private String desc;

public String getSn() {
return sn;
}

public String getDesc() {
return desc;
}

public String getError() {
return error;
}

public String getSub_error() {
return sub_error;
}
}

9、asrpartialjson\AsrPartialJsonData.java

package com.sky.baiduspeechdemo.asrpartialjson;
import java.util.ArrayList;

public class AsrPartialJsonData {
private ArrayList<String> results_recognition;
private OriginResult origin_result;
private String error;
private String best_result;
private String result_type;

public ArrayList<String> getResults_recognition() {
return results_recognition;
}

public OriginResult getOrigin_result() {
return origin_result;
}

public String getBest_result() {
return best_result;
}

public String getError() {
return error;
}

public String getResult_type() {
return result_type;
}
}

10、asrpartialjson\OriginResult.java

package com.sky.baiduspeechdemo.asrpartialjson;

public class OriginResult {

private String corpus_no;
private String err_no;
private String sn;
private Result result;

public Result getResult() {
return result;
}

public String getCorpus_no() {
return corpus_no;
}

public String getErr_no() {
return err_no;
}

public String getSn() {
return sn;
}
}

11、asrpartialjson\Result.java

package com.sky.baiduspeechdemo.asrpartialjson;

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

public class Result {
private ArrayList<String> uncertain_word;
private ArrayList<String> word;

public ArrayList<String> getUncertain_word() {
return uncertain_word;
}

public ArrayList<String> getWord() {
return word;
}
}

工程文件如下：