Comparison of different approaches to determination of resonant frequencies of coupled vibro-acoustic systems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00370520" target="_blank" >RIV/68407700:21220/23:00370520 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.ugn.cas.cz/event/2023/sna/files/sna23-sbornik.pdf" target="_blank" >https://www.ugn.cas.cz/event/2023/sna/files/sna23-sbornik.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of different approaches to determination of resonant frequencies of coupled vibro-acoustic systems

Popis výsledku v původním jazyce

The contribution deals with the 2D vibro-acoustic model of human phonation. Its aim is to determine first few acoustic resonant frequencies for the setup motivated by the phonation into tubes or straws. The first acoustic resonance during this therapeutic technique is significantly changed in comparison to common phonation without tubes. This change can be explained by considerable interaction of acoustics with mechanically compliant vocal folds and vice versa, see [Horacek, etal., 2017]. Here, the vocal folds vibrations are described using linear elasticity theory and the acoustics is modelled with the help of acoustic potential. The both subproblems are numerically approximated by the finite element method and the monolithic coupling strategy is chosen. Two approaches of resonant frequencies determination is applied - the modal analysis and the tranfer function approach. In the end the numerical results of the both approaches are compared.

Název v anglickém jazyce

Comparison of different approaches to determination of resonant frequencies of coupled vibro-acoustic systems

Popis výsledku anglicky

The contribution deals with the 2D vibro-acoustic model of human phonation. Its aim is to determine first few acoustic resonant frequencies for the setup motivated by the phonation into tubes or straws. The first acoustic resonance during this therapeutic technique is significantly changed in comparison to common phonation without tubes. This change can be explained by considerable interaction of acoustics with mechanically compliant vocal folds and vice versa, see [Horacek, etal., 2017]. Here, the vocal folds vibrations are described using linear elasticity theory and the acoustics is modelled with the help of acoustic potential. The both subproblems are numerically approximated by the finite element method and the monolithic coupling strategy is chosen. Two approaches of resonant frequencies determination is applied - the modal analysis and the tranfer function approach. In the end the numerical results of the both approaches are compared.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10102 - Applied mathematics

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Seminar on Numerical Analysis

ISBN

978-80-86407-85-2

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

73-77

Název nakladatele

Institute of Geonics AS CR

Místo vydání

Ostrava

Místo konání akce

Ostrava

Datum konání akce

23. 1. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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