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Phonation threshold pressure at large asymmetries of the vocal folds

By Jorge Lucero, Xavier Pelorson and Annemie Van Hirtum

Abstract

International audienceThe phonation threshold value of the lung pressure has been interpreted as a measure of ease of phonation and proposed as a diagnostic parameter for vocal health. Therefore, it is important to understand its behavior as a function of laryngeal parameters, particularly in abnormal configurations. This paper compares results from a theoretical model of the vocal folds with measures from a mechanical replica, in the presence of a natural frequency asymmetry. It shows that, at small asymmetry, the threshold pressure increases with the degree of asymmetry, whereas at large asymmetry, the threshold pressure reaches a plateau

Topics: [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
Publisher: 'Elsevier BV'
Year: 2020
DOI identifier: 10.1016/j.bspc.2020.102105
OAI identifier: oai:HAL:hal-02920405v1
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