Numerical simulation of flow-induced sound in human voice production
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F13%3A00395680" target="_blank" >RIV/61388998:_____/13:00395680 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.proeng.2013.08.024" target="_blank" >http://dx.doi.org/10.1016/j.proeng.2013.08.024</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.proeng.2013.08.024" target="_blank" >10.1016/j.proeng.2013.08.024</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Numerical simulation of flow-induced sound in human voice production
Popis výsledku v původním jazyce
The aeroacoustic mechanisms in human voice production are complex coupled processes, which are not fully understood until now. The paper presents a hybrid numerical approach to the solution of the acoustic field in human vocal tract, when the fluid flowis first solved by a dedicated CFD solver on a fine computational mesh covering the larynx. Subsequently, the acoustic sources and propagation of the sound waves are calculated by Lighthill's analogy or acoustic perturbation equations on a coarse mesh covering the whole vocal tract including radiation region. The CFD simulation was run in parallel on a SGI Altix UV shared-memory supercomputer; strong and weak parallel performance was tested for up to 50 computational cores. The spectra of the radiated sound for two vowels/i/and/u/evaluated from the acoustic simulation show good agreement with the formant frequencies known from human subjects.
Název v anglickém jazyce
Numerical simulation of flow-induced sound in human voice production
Popis výsledku anglicky
The aeroacoustic mechanisms in human voice production are complex coupled processes, which are not fully understood until now. The paper presents a hybrid numerical approach to the solution of the acoustic field in human vocal tract, when the fluid flowis first solved by a dedicated CFD solver on a fine computational mesh covering the larynx. Subsequently, the acoustic sources and propagation of the sound waves are calculated by Lighthill's analogy or acoustic perturbation equations on a coarse mesh covering the whole vocal tract including radiation region. The CFD simulation was run in parallel on a SGI Altix UV shared-memory supercomputer; strong and weak parallel performance was tested for up to 50 computational cores. The spectra of the radiated sound for two vowels/i/and/u/evaluated from the acoustic simulation show good agreement with the formant frequencies known from human subjects.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BI - Akustika a kmity
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/GAP101%2F11%2F0207" target="_blank" >GAP101/11/0207: Sdružené úlohy mechaniky tekutin a těles - nelineární aeroelasticita</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2013
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Procedia Engineering
ISSN
1877-7058
e-ISSN
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Svazek periodika
61
Číslo periodika v rámci svazku
2013
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
8
Strana od-do
333-340
Kód UT WoS článku
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EID výsledku v databázi Scopus
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