A hybrid approach to computational aeroacoustics of human voice production

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F15%3A%230003391" target="_blank" >RIV/46747885:24220/15:#0003391 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s10237-014-0617-1" target="_blank" >http://dx.doi.org/10.1007/s10237-014-0617-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10237-014-0617-1" target="_blank" >10.1007/s10237-014-0617-1</a>

Result language

angličtina

Original language name

A hybrid approach to computational aeroacoustics of human voice production

Original language description

© 2014, Springer-Verlag Berlin Heidelberg. The aeroacoustic mechanisms in human voice production are complex coupled processes that are still not fully understood. In this article, a hybrid numerical approach to analyzing sound generation in human voice production is presented. First, the fluid flow problem is solved using a parallel finite-volume computational fluid dynamics (CFD) solver on a fine computational mesh covering the larynx. The CFD simulations are run for four geometrical configurations: both with and without false vocal folds, and with fixed convergent or convergent–divergent motion of the medial vocal fold surface. Then the aeroacoustic sources and propagation of sound waves are calculated using Lighthill’s analogy or acoustic perturbation equations on a coarse mesh covering the larynx, vocal tract, and radiation region near the mouth. Aeroacoustic sound sources are investigated in the time and frequency domains to determine their precise origin and correlation with the flow field. The problem of acoustic wave propagation from the larynx and vocal tract into the free field is solved using the finite-element method. Two different vocal-tract shapes are considered and modeled according to MRI vocal-tract data of the vowels /i/ and /u/. The spectra of the radiated sound evaluated from acoustic simulations show good agreement with formant frequencies known from human subjects.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/7AMB13AT006" target="_blank" >7AMB13AT006: The Fundamentals of Human Voice - Hybrid Methods in Computational Aeroacoustics</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

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

Name of the periodical

Biomechanics and Modeling in Mechanobiology

ISSN

1617-7959

e-ISSN

—

Volume of the periodical

14

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

16

Pages from-to

473-488

UT code for WoS article

000354408100004

EID of the result in the Scopus database

2-s2.0-84939886925