A 3D biomechanical vocal tract model to study speech production control: How to take into account the gravity?

Details A 3D biomechanical vocal tract model to study speech production control: How to take into account the gravity? A 3D biomechanical vocal tract model to study speech production control: How to take into account the gravity?

2007-01-24

arxiv.org/abs/physics/0701285v1

Proceedings of the 7th International Seminar on Speech Production. (2006) 403-410

Physics

Medical Physics

Scientific paper

This paper presents a modeling study of the way speech motor control can deal with gravity to achieve steady-state tongue positions. It is based on simulations carried out with the 3D biomechanical tongue model developed at ICP, which is now controlled with the Lambda model (Equilibrium-Point Hypothesis). The influence of short-delay orosensory feedback on posture stability is assessed by testing different muscle force/muscle length relationships (Invariant Characteristics). Muscle activation patterns necessary to maintain the tongue in a schwa position are proposed, and the relations of head position, tongue shape and muscle activations are analyzed.

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