About: Numerical simulation of flow-induced sound in human voice production

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	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 flow is 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. 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 flow is 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. (en)
Title	Numerical simulation of flow-induced sound in human voice production Numerical simulation of flow-induced sound in human voice production (en)
skos:prefLabel	Numerical simulation of flow-induced sound in human voice production Numerical simulation of flow-induced sound in human voice production (en)
skos:notation	RIV/61388998:_____/13:00395680!RIV14-GA0-61388998
http://linked.open...avai/predkladatel	Ústav termomechaniky AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP101/11/0207)
http://linked.open...iv/cisloPeriodika	2013
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Šidlof, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	92581
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/13:00395680
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	aeroacoustics; parallel CFD; human voice; biomechanics; vocal folds (en)
http://linked.open.../riv/klicoveSlovo	aeroacoustics human voice biomechanics vocal folds parallel CFD
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[F94AB5D2EC0E]
http://linked.open...i/riv/nazevZdroje	Procedia Engineering
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Coupled problems of fluid and solid mechanics - nonlinear aeroelasticity
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	61
http://linked.open...iv/tvurceVysledku	Šidlof, Petr Huppe, A. Zörner, S.
issn	1877-7058
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.proeng.2013.08.024

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