Second International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2001)
We present in this study experimental and
theoretical results concerning the behaviour of
the airflow through the glottis during
phonation. This work follows our previous
study on the behaviour of the flow in
asymmetric models of vocal folds modelling
pathologies. For sake of better control of
the parameters, the vocal folds models were
rigid but supplied with oscillating airflow.
The measurements are now carried out on a
more realistic set-up that reproduces the selfsustained
oscillations of the vocal folds. It is
inspired by previous works on brass player
lips oscillations. By modifying
asymmetricaly the mechanical properties of
the vocal folds models we can simulate
pathologies. We then try to reproduce the
measured phenomena by use of numerical
simulation with a two-mass model inspired by
Lous et all..
In the first section, we describe the experimental set-up we use in this study, then we look at measurements with a special care to pathological' cases. Finally, after a brief description of the numerical model, we present numerical simulations that fit our experimental data.
Bibliographic reference. Vilain, C. / Pelorson, Xavier / Hirschberg, A. / Willems, J. F. H. / Marre, L. Le (2001): "Study of the airflow through in-vitro oscillating pathological vocal folds", In MAVEBA-2001, 8-13.