Numerical simulation of flow-induced sound in human voice production
Result 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 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.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Numerical simulation of flow-induced sound in human voice production
Original language 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 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.
Czech name
—
Czech description
—
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
—
Result continuities
Project
GAP101/11/0207: Coupled problems of fluid and solid mechanics - nonlinear aeroelasticity
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Procedia Engineering
ISSN
1877-7058
e-ISSN
—
Volume of the periodical
61
Issue of the periodical within the volume
2013
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
333-340
UT code for WoS article
—
EID of the result in the Scopus database
—
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BI - Acoustics and oscillation
Year of implementation
2013