The obtainment of speech signal feature is the premises and foundation of audio-visual conversion in speech driven face animation.The obtainment technology of speech signal feature is studied.

• 语音特征参数的提取是语音驱动人脸动画中语音可视化的前提和基础,该文立足于语音驱动的人脸动画技术,较为系统地研究了语音参数的提取。