Finite element modelling of vocal tract changes after voice therapy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F11%3A33116374" target="_blank" >RIV/61989592:15310/11:33116374 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388998:_____/11:00361232 RIV/68407700:21220/11:00186234

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Finite element modelling of vocal tract changes after voice therapy

Popis výsledku v původním jazyce

Two 3D finite element (FE) models were constructed, based on CT measurements of a subject phonating on [a:] before and after phonation into a tube. Acoustic analysis was performed by exciting the models with acoustic flow velocity at the vocal folds. Thegenerated acoustic pressure of the response was computed in front of the mouth and inside the vocal tract for both FE models. The formants F1-F3 correspond to classical vibration modes also solvable by 1D vocal tract model. However, for higher formants,there occur more complicated transversal modes which require 3D modelling. The higher formants created a clear formant cluster around 4 kHz after the vocal exercise with the tube. Since the human ear is most sensitive to frequencies between 2 and 4 kHzconcentration of sound energy in this frequency region (F4-F5) is effective for communication. The results suggest that exercising using phonation into tubes help in improving the vocal economy.

Název v anglickém jazyce

Finite element modelling of vocal tract changes after voice therapy

Popis výsledku anglicky

Two 3D finite element (FE) models were constructed, based on CT measurements of a subject phonating on [a:] before and after phonation into a tube. Acoustic analysis was performed by exciting the models with acoustic flow velocity at the vocal folds. Thegenerated acoustic pressure of the response was computed in front of the mouth and inside the vocal tract for both FE models. The formants F1-F3 correspond to classical vibration modes also solvable by 1D vocal tract model. However, for higher formants,there occur more complicated transversal modes which require 3D modelling. The higher formants created a clear formant cluster around 4 kHz after the vocal exercise with the tube. Since the human ear is most sensitive to frequencies between 2 and 4 kHzconcentration of sound energy in this frequency region (F4-F5) is effective for communication. The results suggest that exercising using phonation into tubes help in improving the vocal economy.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F08%2F1155" target="_blank" >GA101/08/1155: Počítačové a fyzikální modelování vibroakustických vlastností vokálního traktu člověka s ohledem na optimalizaci hlasové kvality</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Applied and Computational Mechanics

ISSN

1802-680X

e-ISSN

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Svazek periodika

5

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

77-88

Kód UT WoS článku

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EID výsledku v databázi Scopus

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