export default class XFYunTTSClient {
    private appid;
    private apiKey;
    private apiSecret;
    private content;
    private ttsWS;
    private audioChunks;
    private audioContext;
    private audioSource;
    private isPlaying;
    constructor(config: Config);
    /**
     * 科大讯飞密钥校验
     * @param config
     */
    private validateConfig;
    /**
     * 科大讯飞接口鉴权
     * @returns
     */
    private generateSignature;
    /**
     * 播放音频
     */
    private playAudio;
    /**
     * 停止播放
     */
    private stopPlayAudio;
    /**
     * 主要合成方法
     * @param options 可选（科大讯飞 business 参数）
     * @returns
     */
    synthesize(options?: TTSOptions): Promise<void>;
    /**
     * 资源销毁
     */
    destory(): void;
}