In this dissertation, we constitute a Chinese password recognition system based on CDHMM. Serials of techniques like choosing the robust features, amending recognition models and compensating the parameters of models are presented.

• 本文建立了一个基于CDHMM的汉语口令识别系统，以此为基础，从选择强噪声鲁棒性的语音特征参数，及对模型参数的补偿与修正等方面，对加性平稳背景噪声环境下的短语音汉语口令识别方法进行了研究。