"dependencies": {
                "@package/baidu-tts":"file:./libs/xxxx.har"
                }

"requestPermissions": [
{
"name":"ohos.permission.INTERNET"
}
]

 private initialTts(): void {
// 获取tts实例，Context需要保证在tts运行期间不会被释放
        let speechSynthesizer = new SpeechSynthesizer(this);
// 设置tts监听器
        speechSynthesizer.setSpeechSynthesizerListener(SpeechSynthesizerListener);
// 如果需要离线合成，设置离线资源
        this.setOfflineParam(speechSynthesizer);
// 如果需要在线合成，设置在线资源
        this.setOnlineParam(speechSynthesizer);
    }

    private setOfflineParam(speechSynthesizer: SpeechSynthesizer): void {
        //设置您的app_id
        speechSynthesizer.setParam(SpeechSynthesizer.PARAM_APP_ID, "your appid");
        //设置您的鉴权sn
        speechSynthesizer.setParam(SpeechSynthesizer.PARAM_AUTH_SN, "your auth sn");
        // 离线资源库路径 
        speechSynthesizer.setParam(SpeechSynthesizer.PARAM_OFFLINE_MODEL, this.setOfflineModel());

        // 初始化离线tts服务，服务会读取相应离线资源进行加载，此过程是耗时操作。非必须调用。提前调用，会减少第一次合成或者合成播放接口耗时。
        speechSynthesizer.loadOfflineTts().then(
      (ttsError: ITtsError) => {
        let resultCode = ttsError.getDetailCode();// 返回值为0，初始化离线成功 
        let resultMessage = ttsError.getDetailMessage();// 返回值为0时，描述信息为空      
} );
    }

    private setOfflineModel():string {
    let offlineModel: Record<string, string> = {};
    offlineModel[SpeechSynthesizer.TTS_TEXT_MODEL_FILE] = "text音库在设备中的可访问绝对路径";
    offlineModel[SpeechSynthesizer.TTS_SPEECH_MODEL_FILE] = "speech音库在设备中的可访问绝对路径";
    return JSON.stringify(offlineModel);
    }

private setOnlineParam(speechSynthesizer: SpeechSynthesizer) : void {
// 设置在线需要的api_key和secret_key
speechSynthesizer.setParam(SpeechSynthesizer.PARAM_API_KEY, "your api_key");
speechSynthesizer.setParam(SpeechSynthesizer.PARAM_SECRET_KEY, "your secret_key");
// 设置在线发音人
speechSynthesizer.setParam(SpeechSynthesizer.PARAM_ONLINE_SPEAKER,
onlineSpeaker);
  // 在线超时时间，MIX模式超时会切换至离线，ONLINE模式会超时
  speechSynthesizer.setParam(SpeechSynthesizer.PARAM_ONLINE_TIMEOUT,
  “2000”); // 注意参考参数范围
  // 初始化在线tts服务，服务会读取相应资源进行加载，此过程是耗时操作。非必须调用。提前调用，会减少第一次合成或者合成播放接口耗时。
  speechSynthesizer.loadOnlineTts().then(
      (ttsError: ITtsError) => {
        let resultCode = ttsError.getDetailCode();// 返回值为0，初始化在线成功 
        let resultMessage = ttsError.getDetailMessage();// 返回值为0时，描述信息为空    
} );
}

speechSynthesizer.setParam(SpeechSynthesizer.PARAM_VOLUME, "5");

onSynthesizeResponse(synthesizerResponse: SynthesizerResponse): void;
// 获取业务测设置的合成标识id  
let utteranceId = synthesizerResponse.getUtteranceId(); 
// 获取当前实例id，构建多speechSynthesizer实例时用来区分不同的实例 
 let instanceId = synthesizerResponse.getInstanceId();
// 当前请求的唯一id，该值会串通后面所有链路
let sn = synthesizerResponse.getSn();

synthesizerResponse.getSynthesizeType() == SYNTHESIZE_START

synthesizerResponse.getSynthesizeType() == SYNTHESIZE_DATA_ARRIVED
       let progress = synthesizerData.getAudioProgress(); // 获取合成进度
       let engineType = synthesizerData.getEngineType();// 获取合成类型。0在线，1离线
       let sampleRate = synthesizerData.getAudioSampleRate();// 当前音频采样率
       let audioData = synthesizerData.getAudioData();// 当前音频数据

synthesizerResponse.getSynthesizeType() == SYNTHESIZE_FINISH

synthesizerResponse.getSynthesizeType() == SYNTHESIZE_ERROR
synthesizerResponse.getSynthesizerError() // 获取相关的错误信息

synthesizerResponse.getSynthesizeType() == PLAY_START

synthesizerResponse.getSynthesizeType() == PLAY_PROGRESS

synthesizerResponse.getSynthesizeType() == PLAY_FINISH

public static verifyModelFile(filePath:string):boolean

public static getEngineInfo():string

public static getEngineLibVersion():string

public static getDecoderLibVersion():string

public static getEngineVersion():number

public static matchResEngine(filePath:string) :number

public static getSpeechSampleRate(filePath:string):number

public static getLicenseLeftValidDays(licenseFilePath:string, id:string, sn:string, cuid:string):number