Influence of tissue changes in superficial lamina propria on production of Czech vowels
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00506030" target="_blank" >RIV/61388998:_____/19:00506030 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/19:73595250 RIV/00216305:26210/19:PU132229
Result on the web
<a href="http://dx.doi.org/10.21495/71-0-141" target="_blank" >http://dx.doi.org/10.21495/71-0-141</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21495/71-0-141" target="_blank" >10.21495/71-0-141</a>
Alternative languages
Result language
angličtina
Original language name
Influence of tissue changes in superficial lamina propria on production of Czech vowels
Original language description
Superficial lamina propria (SLP) is a water-like vocal fold (VF) layer located directly under overlying epithelium. Its material properties affect VF motion and thus resulting spectrum of produced sound. Influence of stiffness and damping of the SLP on sound spectrum of Czech vowels is examined using a two-dimensional (2D) finite element (FE) model of a human phonation system. The model consists of the VF (structure model) connected with an idealized trachea and vocal tract (VT) (fluid models). Five VTs for all Czech vowels [a:], [e:], [i:], [o:] and [u:] were used and their geometry were based on MRI data. Fluid flow in the trachea and VT was modelled by unsteady viscous compressible Navier-Stokes equations. Such a formulation enabled numerical simulation of a fluid-structure-acoustic interaction (FSAI). Self-sustained oscillations of the VF were described by a momentum equation including large deformations and a homogeneous linear elastic model of material was used. Fluid and structure solvers exchange displacements and boundary forces in each iteration. During closed phase VFs are in contact and fluid flow is separated. We can observe that both the damping and the stiffness of the SLP substantially influence the amplitude and frequency of VFs vibration as well as the open time of the glottis.n
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
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
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 2019. Book of full texts
ISBN
978-80-87012-71-0
ISSN
1805-8248
e-ISSN
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Number of pages
4
Pages from-to
141-144
Publisher name
Institute of Thermomechanics of the Czech Academy of Sciences
Place of publication
Prague
Event location
Svratka
Event date
May 13, 2019
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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