Subject-specific computational modeling of human phonation

A direct numerical simulation of flow-structure interaction is carried out in a subject-specific larynx model to study human phonation under physiological conditions. The simulation results compare well to the established human data. The resulting glottal flow and waveform are found to be within the...

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Published inThe Journal of the Acoustical Society of America Vol. 135; no. 3; pp. 1445 - 1456
Main Authors Xue, Qian, Zheng, Xudong, Mittal, Rajat, Bielamowicz, Steven
Format Journal Article
LanguageEnglish
Published United States Acoustical Society of America 01.03.2014
Subjects
Adult
Biomechanical Phenomena
Computer Simulation
Humans
Larynx - anatomy & histology
Larynx - diagnostic imaging
Larynx - physiology
Male
Models, Anatomic
Numerical Analysis, Computer-Assisted
Phonation
Pressure
Speech Production
Time Factors
Tomography, X-Ray Computed
Vibration
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Summary:A direct numerical simulation of flow-structure interaction is carried out in a subject-specific larynx model to study human phonation under physiological conditions. The simulation results compare well to the established human data. The resulting glottal flow and waveform are found to be within the normal physiological ranges. The effects of realistic geometry on the vocal fold dynamics and the glottal flow are extensively examined. It is found that the asymmetric anterior-posterior laryngeal configuration produces strong anterior-posterior asymmetries in both vocal fold vibration and glottal flow which has not been captured in the simplified models. It needs to be pointed out that the observations from the current numerical simulation are only valid for the flow conditions investigated. The limitations of the study are also discussed.
Bibliography:ObjectType-Article-1
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Author to whom correspondence should be addressed. Electronic mail: xudong.zheng@maine.edu
ISSN:0001-4966
1520-8524
1520-8524
DOI:10.1121/1.4864479