Determination of parameters for lumped parameter models of the vocal foldsusing a finite-element method approach

To study the mechanical behavior of the vocal folds, lumped parameter model s of the vocal folds have been developed in the past. Coupling with a model of the aerodynamics in the glottis provides the possibility of simulating glottal waves. A new method is presented to obtain values for the masses an d springs of the lumped parameter models by using a finite-element method m odel of the vocal folds. This finite-element method model is based on geome try and material data from the literature, resulting in a model that descri bes the vocal fold in a realistic way. Requiring the dynamic behavior of th e lumped parameter model of the vocal fold to be equal to the dynamic behav ior of the finite-element method model of the vocal fold, parameter values are obtained that are purely based on dynamic considerations. Therefore, th e behavior of the vocal folds is described in a realistic way by these para meters. These values are compared with the values used by previous authors and are implemented in lumped parameter models. Self-sustained oscillation is achieved with the new values for masses and springs. (C) 1999 Acoustical Society of America. [S0001-4966(99)03412-8].