Preprint Open access
The Shape of Speech: A Geometric Measure of Coarticulation for Speech-Driven 3D Facial Animation
Speech-driven 3D facial animation can reproduce recognizable mouth poses. However, it can simplify the motion between them, and that motion carries coarticulation, the way the sounds around each sound shape its articulation. We introduce a geometric measure of this trajectory shaping: lip-path length compared with the …