Experimental modelling and human data of glottal area declination rate for vowel and semi-occluded vocal tract phonation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F21%3A00539273" target="_blank" >RIV/61388998:_____/21:00539273 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S174680942100029X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S174680942100029X?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.bspc.2021.102432" target="_blank" >10.1016/j.bspc.2021.102432</a>

Result language
angličtina
Original language name
Experimental modelling and human data of glottal area declination rate for vowel and semi-occluded vocal tract phonation
Original language description
Objective: The aim of this study was to investigate how the maximum area declination rate (MADR) of the glottis corresponds to the maximum velocity of the self-oscillating vocal folds just before their collision. The maximum velocity before collision is closely related to impact stress in the colliding vocal folds and, thus, it is an important indicator of vocal loading. Methods: High speed imaging data for a male subject and measurements of the glottal area waveforms performed on a physical 1:1 scaled model for phonation on vowel [u:] were compared with those obtained during a semi-occluded vocal tract which increases voice source-vocal tract interaction. Semi-occlusion was obtained by phonation through a glass resonance tube with the distal end in air or submerged 10 cm in water. Results: The results show that the area declination rate of the glottis, i.e., closing velocity, before the glottal closure is substantially lower than the MADR, and also lower in semi-occluded vocal tract phonation through a tube into air and into water than in vowel phonation. Conclusions: The results suggest that MADR is not a reliable estimate of impact stress, and that impact stress in tube therapy is lower than in vowel phonation.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10307 - Acoustics

Project
<a href="/en/project/GA19-04477S" target="_blank" >GA19-04477S: Modelling and measurements of fluid-structure-acoustic interactions in biomechanics of human voice production</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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