Abstract :
The goal of physical modelling of speech is to understand and reproduce the
physical phenomena occuring during phonation. This thesis is mainly focused on
the modelling of both the glottal airflow and the vocal-folds mechanics. This study
is based on several experimental set-up reproducing physical phenomena contributing
to the vocal folds self-oscillations. Theoretical models describing both the
mechanics of the folds and the hydrodynamics of the glottal airflow are presented
and compared to experimental results. A particular attention is paid on the physical
modelling of pathological vocal folds. An experimental study of the airflow
through in-vitro pathological vocal folds is first presented. Then, measurements
carried out on a new experimental set-up simulating self-oscillations of pathological
vocal-folds are analysed with a temporal simulation code.
Intitulé et
Keywords :
Physical modelling of speech- In-vitro measurements - Artificial
mouth - Glottal flow - Two-mass model - Pathological voice
Main publications :
-
Vilain C., Pelorson X., Fraysse C., Deverge M., Hirschberg A. and Willems J.
(2004): "Experimental validation of a quasi-steady theory for the flow
through the glottis". Journal of Sound and Vibration, 276:
475–490, 2004
-
Vilain
C., Pelorson X., Hirschberg A., Le Marrec L., Op't Root W. and Willems
J. (2003): "Contribution to the physical modeling of the lips.
Influence of the mechanical boundary conditions". Acta Acustica united
with Acustica, 89: 882-887, 2003
- Deverge M., Pelorson X.,
Vilain C., Lagrée P.Y.L, Chentouf F., Willems J. and
Hirschberg A.
(2003): "Influence of the collision on the flow through in-vitro rigid
models of the vocal folds". J. Acoust. Soc. Am., 114 (6): 3354-3362,
2003