Publication result detail

FE modelling of effect of tonsillectomy on production of Czech vowels

ŠVANCARA, P.; HORÁČEK, J.

Original Title

FE modelling of effect of tonsillectomy on production of Czech vowels

English Title

FE modelling of effect of tonsillectomy on production of Czech vowels

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

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.

English abstract

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.

Keywords

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

Key words in English

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

Authors

ŠVANCARA, P.; HORÁČEK, J.

RIV year

2010

Released

01.01.2005

ISBN

1210-2717

Periodical

Inženýrská mechanika - Engineering Mechanics

Volume

12

Number

5

State

Czech Republic

Pages from

347

Pages to

354

Pages count

8

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"
}