Estimation of elasticity and viscosity parameters of muscles for speech production models
Reiner Wilhelms · The Journal of the Acoustical Society of America · 1990
In connection with a project on a dynamic three-dimensional tongue model, a constitutive description of tongue muscles is needed. This does not only include elastic coefficients, but also viscoelastic parameters of the inactive as well as for the activated muscles. A number of documented and published experiments were done on related areas, usually using different muscles, like muscular tissue of vocal folds, heart muscles, etc. Many of these used small elastic deformation as the underlying theory that only allows for linear stress-strain relations and small strains. A more general method for describing the elastic and myoelastic behavior is by a strain energy function for large deformation. The appropriate elastic parameters then are parameters in the strain energy function. This study describes a method to estimate the parameters from observation of the motion of several points on the surface of a free oscillating specimen.