Lip synchronization is the key issue in speech driven face animation system.

语音与唇动面部表情的同步是人脸动画的难点之一。

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Lip is one of the most important facial features, and plays key roles in a variety of fields such as audio-visual speech, authentication, lip synchronization, face recognition, etc.

嘴唇是人脸特征的重要组成部分，在音视频识别、认证、嘴唇同步、人脸识别等方面都很重要。

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