Work

Computational modeling of phonatory dynamics in a tubular three-dimensional model of the human larynx

Year: 2012

Type: article

Abstract: Simulation of the phonatory flow-structure interaction has been conducted in a three-dimensional, tubular shaped laryngeal model that has been designed with a high level of realism with respect to the human laryngeal anatomy. A non-linear spring-based contact force model is also implemented for the purpose of representing contact in more general conditions, especially those associated with three-dimensional modeling of phonation in the presence of vocal fold pathologies. The model is used to study the effects of a moderate (20%) vocal-fold tension imbalance on the phonatory dynamics. The characteristic features of phonation for normal as well as tension-imbalanced vocal folds, such as glottal waveform, glottal jet evolution, mucosal wave-type vocal-fold motion, modal entrainment, and asymmetric glottal jet deflection have been discussed in detail and compared to established data. It is found that while a moderate level of tension asymmetry does not change the vibratory dynamics significantly, it can potentially lead to measurable deterioration in voice quality.

Source: The Journal of the Acoustical Society of America

DOI: 10.1121/1.4740485

Authors: Q. Xue, R. Mittal, X. Zheng, S. Bielamowicz

Institutions: Johns Hopkins University, George Washington University

Language: English

Topic: Voice and Speech Disorders

Subfield: Physiology

Field: Medicine

Domain: Health Sciences

Open Access status: bronze

Funders: National Science Foundation, U.S. Public Health Service, National Institute on Deafness and Other Communication Disorders

Awards: G1140102197, G3859062789, G641604104