MODELING OF VOICED SOUNDS PRODUCTION USING A MODIFIED 2-MASS MODEL

The two-mass model is very often presented as a simple but efficient m odel quite well adapted for the purpose of voiced sounds numerical sim ulation. It appear however that the description of the flow through th e glottis is usually oversimplified. To some extent this point could e xplain the limits of the model. This paper proposes a more precise des cription of the flow through the glottis. In particular a quasi-steady moving flow separation point is introduced. A validation of the theor y under unsteady-flow conditions is presented here. The importance of the revised flow model for phonation modelling is evaluated and discus sed using a simple model for the vocal cords based on the well-known t wo-mass model.