Three-dimensional numerical analysis of Czech vowel production
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F20%3A00538178" target="_blank" >RIV/61388998:_____/20:00538178 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/20:73603583 RIV/00216305:26210/20:PU138429
Result on the web
<a href="https://www.engmech.cz/im/doc/EM2020_proceedings.pdf" target="_blank" >https://www.engmech.cz/im/doc/EM2020_proceedings.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21495/5896-3-182" target="_blank" >10.21495/5896-3-182</a>
Alternative languages
Result language
angličtina
Original language name
Three-dimensional numerical analysis of Czech vowel production
Original language description
Spatial air pressures generated in human vocal tract by vibrating vocal folds present sound sources of vowel production. This paper simulates phonation phenomena by using fluid-structure-acoustic scheme in a three-dimensional (3D) finite element model of a Czech vowel [o:]. The computational model was composed of four-layered M5-shaped vocal folds together with an idealized trachea and vocal tract. Spatial fluid flow in the trachea and in the vocal tract was obtained by unsteady viscous compressible Navier-Stokes equations. The oscillating vocal folds were modelled by a momentum equation. Large deformations were allowed. Transient analysis was performed based on separate structure and fluid solvers, which were exchanging loads acting on the vocal folds boundaries in each time iteration. The deformation of the fluid mesh during the vocal fold oscillation was realized by the arbitrary Lagrangian-Eulerian approach and by interpolation of fluid results on the deformed fluid mesh. Preliminary results show vibration characteristics of the vocal folds, which correspond to those obtained from human phonation at higher pitch. The vocal folds were self-oscillating at a reasonable frequency of 180 Hz. The vocal tract eigenfrequencies were in the ranges of the formant frequencies of Czech vowel [o:] measured on humans, during self-oscillations the formants shifted to lower frequencies.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10307 - Acoustics
Result continuities
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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
ENGINEERING MECHANICS 2020
ISBN
978-80-214-5896-3
ISSN
1805-8248
e-ISSN
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Number of pages
4
Pages from-to
182-185
Publisher name
Brno University of Technology Institute of Solid Mechanics, Mechatronics and Biomechanics
Place of publication
Brno
Event location
Brno
Event date
Nov 24, 2020
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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