Speech Animation
In short: Speech animation is the process of generating facial movements that correspond to spoken audio, encompassing lip sync as well as accompanying jaw, cheek, and subtle facial motions.
About Speech Animation
Speech animation extends beyond pure lip sync to include all the facial movements that naturally accompany speaking, such as jaw opening, cheek deformation, nasolabial fold changes, and micro-expressions. Convincing speech animation requires coordinating these secondary movements with the primary lip sync to avoid the "ventriloquist effect" where only the lips move while the rest of the face remains static.
Advanced AI models jointly predict all speech-related facial movements from audio, producing results that look significantly more natural than systems that only modify the mouth region in isolation.
How Speech Animation Connects to Lip Sync
Speech Animation relates to several other concepts in the AI lip sync pipeline: Lip Sync , and Facial Reanimation .
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