Title

AreiA computational study of the effect of vocal-fold asymmetry on phonation

Document Type

Journal Article

Publication Date

8-1-2010

Journal

Journal of the Acoustical Society of America

Volume

128

Issue

2

DOI

10.1121/1.3458839

Abstract

Unilateral laryngeal paralysis leads to tension imbalance and hence to asynchronous movements between the two vocal folds during phonation. In the current study, a computational model of phonation that couples a two-mass model of the vocal folds with a Navier-Stokes model of the glottal airflow, has been used to examine the dynamics of vocal fold configurations with tension imbalance and its implications for phonation. The simulations show that tension imbalance influences phonation onset, intensity as well as the fundamental phonation frequency. Distinct non-linear effects such as period-doubling bifurcation and preferential frequency selection are also observed. © 2010 Acoustical Society of America.

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