3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-453-C5-456
Modelling of voiced sounds production using a modified two-mass modelX. PELORSON1, A. HIRSCHBERG2 and Y. AUREGAN3
1 Institut de la Communication Parlée, URA 368 du CNRS, 46 avenue F. Viallet, 38031 Grenoble cedex, France
2 Vakgroep Transportfysica, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
3 Laboratoire d'Acoustique de l'Université du Maine, Avenue Olivier Messiaen, BP. 535, 72017 Le Mans, France
The two-mass model is very often presented as a simple but efficient model quite well adapted for the purpose of voiced sounds numerical simulation. It appear however that the description of the flow through the glottis is usually oversimplified. To some extent this point could explain the limits of the model. This paper proposes a more precise description of the flow through the glottis. In particular a quasi-steady moving flow separation point is introduced. A validation of the theory under unsteady-flow conditions is presented here. The importance of the revised flow model for phonation modelling is evaluated and discussed using a simple model for the vocal cords based on the well-known two-mass model.
© EDP Sciences 1994