百度语音合成(TTS)SDK使用方法

jopen 10年前
语音合成是实现人机语音交互,建立一个有听和讲能力的交互系统所必需的关键技术。
这篇文章将介绍如何使用百度Android语音合成SDK。
与语音识别SDK类似,使用语音合成SDK也需要注册,并开启语音合成API服务,详细步骤可以参考   点击打开链接        中的注册部分。
百度语音合成SDK以JAR包+动态链接库形式发布,需要开发者在        点击打开链接      下载SDK开发包,并将libs文件夹拷贝到工程中

申请必要的权限
     <uses-permission android:name="android.permission.INTERNET"></uses-permission>        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>        <uses-permission android:name="android.permission.READ_PHONE_STATE"/>  

初始化SpeechSynthesizer对象
     speechSynthesizer = new SpeechSynthesizer(getApplicationContext(),                "holder", this);        // 此处需要将setApiKey方法的两个参数替换为你在百度开发者中心注册应用所得到的apiKey和secretKey        speechSynthesizer.setApiKey("your-apiKey", "your-secretKey");  

参数设置
     private void setParams() {                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_SPEAKER, "0");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_VOLUME, "5");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_SPEED, "5");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_PITCH, "5");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_AUDIO_ENCODE, "1");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_AUDIO_RATE, "4");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_LANGUAGE, "ZH");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_NUM_PRON, "0");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_ENG_PRON, "0");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_PUNC, "0");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_BACKGROUND, "0");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_STYLE, "0");                speechSynthesizer.setParam(SpeechSynthesizer.PARAM_TERRITORY, "0");            }  
不需要实现这么多参数,具体参数的含义可以参看SDK的使用文档和参数设置。
如果需要对音频播报的音频流进行设置,可以调用如下接口
     speechSynthesizer.setAudioStreamType(AudioManager.STREAM_MUSIC);  
以上内容即可以实现语音合成的操作,识别过程中可以使用SpeechSynthesizerListener来监听状态,从而更好的实现界面同步。
     class listener implements SpeechSynthesizerListener {                       @Override               public void onStartWorking(SpeechSynthesizer synthesizer) {                   logDebug("开始工作,请等待数据...");               }               @Override               public void onSpeechStart(SpeechSynthesizer synthesizer) {                   logDebug("朗读开始");               }               @Override               public void onSpeechResume(SpeechSynthesizer synthesizer) {                   logDebug("朗读继续");               }               @Override               public void onSpeechProgressChanged(SpeechSynthesizer synthesizer, int progress) {                       }               @Override               public void onSpeechPause(SpeechSynthesizer synthesizer) {                   logDebug("朗读已暂停");               }               @Override               public void onSpeechFinish(SpeechSynthesizer synthesizer) {                   logDebug("朗读已停止");               }               @Override               public void onNewDataArrive(SpeechSynthesizer synthesizer, byte[] dataBuffer, int dataLength) {                   logDebug("新的音频数据:" + dataLength);               }               @Override               public void onError(SpeechSynthesizer synthesizer, SpeechError error) {                   logError("发生错误:" + error.errorDescription + "(" + error.errorCode + ")");               }               @Override               public void onCancel(SpeechSynthesizer synthesizer) {                   logDebug("已取消");               }               @Override               public void onBufferProgressChanged(SpeechSynthesizer synthesizer, int progress) {                       }                   }