本文基于無刷式直流電機的混沌模型，利用狀態觀測器實現了發送端與接收端的同步，并且用該混沌模型和狀態觀測器所產生的數字序列實現待傳輸語音特征參量的加解密操
作，識別結果驗證了該混沌保密通信系統的有效性，并且傳輸語音特征參量的方法也提高了該系統的安全性。
關鍵詞：混沌同步；保密通信；語音識別
Abstract: In the article, based on brushless DC motor chaotic model, the state observer is used to achieve the synchronization between sending end and receiving end. And the digital series produced by the chaotic model and the state observer are used to encrypt and decrypt the characteristic parameters of the speech to transferred separately. The recognition results prove the validity of the chaotic secure communication system. The method of the speech to transferred separately. The recognition results prove the validity of the chaotic secure communication system. The method of transferring the characteristic parameters improves the system’s security.
Key words: chaotic synchronization; secure communication; speech recognition