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Numerical simulation of the self-oscillating vocal folds in interaction with vocal tract shaped for particular czech vowels
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SYSNO ASEP 0464217 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Numerical simulation of the self-oscillating vocal folds in interaction with vocal tract shaped for particular czech vowels Author(s) Hájek, P. (CZ)
Švancara, Pavel (UT-L) RID, ORCID
Horáček, Jaromír (UT-L) RID, ORCID
Švec, J. G. (CZ)Source Title Advances in Intelligent Systems and Computing. - Heidelberg : Springer Verlag, 2017 / Jablonski R. ; Szewczyk R. - ISSN 2194-5357 - ISBN 978-33-194-6489-3 Pages s. 317-323 Number of pages 7 s. Publication form Print - P Action International Conference on Global Research and Education /15./ : INTER-ACADEMIA 2016 Event date 26.09.2016 - 28.09.2016 VEvent location Varšava Country PL - Poland Event type WRD Language eng - English Country DE - Germany Keywords simulation and phonation ; fluid-structure-acousitic interaction ; finite element method ; biomechanics of voice ; speech recognition Subject RIV BI - Acoustics OECD category Acoustics R&D Projects GAP101/12/1306 GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 EID SCOPUS 84989863313 DOI 10.1007/978-3-319-46490-9_43 Annotation The study presents a two-dimensional (2D) finite element (FE) model which consists of the vocal folds (VF), the trachea and idealized vocal tract (VT) shaped for Czech vowels [a:], [i:] and [u:] created from magnetic resonance images (MRI). Such configuration enables solving fluid-structure-acoustic interaction, flow-induced self-oscillations of the VF and acoustic wave propagation in the VT by explicit coupling scheme with two separate solvers for structure and fluid domain. The FE model of the VF includes the VF pretension and setting to phonatory position, large deformation of tissues and VF contact. Unsteady viscous compressible airflow through the FE model of the trachea, glottis and the VT is modelled by using Navier-Stokes (NS) equations. Moving boundary of the fluid domain (according to the VF motion) is solved by the Arbitrary Lagrangian - Eulerian approach. The solution obtained for the FE models is analyzed and the effect of the VT shape on the spectra of the generated acoustic pressure at the lips is discussed and the results are compared with measured data published in literature. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2017
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