Detail publikačního výsledku

FE modelling of effect of tonsillectomy on production of Czech vowels

ŠVANCARA, P.; HORÁČEK, J.

Originální název

FE modelling of effect of tonsillectomy on production of Czech vowels

Anglický název

FE modelling of effect of tonsillectomy on production of Czech vowels

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

In this study is numerically examined the effect of tonsillectomy on production of Czech vowels /a/ and /i/. Similar experimental studies are not easily realisable on living subjects. Finite element (FE) models of the acoustic spaces corresponding to the human vocal tract for the Czech vowels /a/ and /i/ with acoustic space around the human head are used in numerical simulations of phonation. The acoustic resonant characteristics of the FE models are studied using modal and transient analyses. The production of vowels is simulated in time domain using transient analysis of FE model excited by analytically described Liljencrants-Fants (LF) glottal signal model. Calculated results shows that tonsillectomy causes frequency shifts of some formant frequencies up to 150 Hz. The frequency shift of formants significantly depends on position and size of the tonsils.

Anglický abstrakt

In this study is numerically examined the effect of tonsillectomy on production of Czech vowels /a/ and /i/. Similar experimental studies are not easily realisable on living subjects. Finite element (FE) models of the acoustic spaces corresponding to the human vocal tract for the Czech vowels /a/ and /i/ with acoustic space around the human head are used in numerical simulations of phonation. The acoustic resonant characteristics of the FE models are studied using modal and transient analyses. The production of vowels is simulated in time domain using transient analysis of FE model excited by analytically described Liljencrants-Fants (LF) glottal signal model. Calculated results shows that tonsillectomy causes frequency shifts of some formant frequencies up to 150 Hz. The frequency shift of formants significantly depends on position and size of the tonsils.

Klíčová slova

biomechanic of voice,finite element modeling,acoustics of human vocal tract

Klíčová slova v angličtině

biomechanic of voice,finite element modeling,acoustics of human vocal tract

Autoři

ŠVANCARA, P.; HORÁČEK, J.

Rok RIV

2010

Vydáno

01.01.2005

ISSN

1210-2717

Periodikum

Inženýrská mechanika - Engineering Mechanics

Svazek

12

Číslo

5

Stát

Česká republika

Strany od

347

Strany do

354

Strany počet

8

Plný text v Digitální knihovně

http://hdl.handle.net/

BibTex

@article{BUT42597,
  author="Pavel {Švancara} and Jaromír {Horáček}",
  title="FE modelling of effect of tonsillectomy on production of Czech vowels",
  journal="Inženýrská mechanika - Engineering Mechanics",
  year="2005",
  volume="12",
  number="5",
  pages="347--354",
  issn="1210-2717"
}