Detail publikace

Computational modeling of effect of tonsillectomy on voice production

ŠVANCARA, P. HORÁČEK, J. VOKŘÁL, J. ČERNÝ, L.

Anglický název

Computational modeling of effect of tonsillectomy on voice production

Typ

Stať ve sborníku v databázi WoS či Scopus

Jazyk

en

Originální abstrakt

The aim of this study is to develop mathematical 3D finite element (FE) models for numerical simulations of vibroacoustic properties of the human vocal tract after a tonsillectomy. The FE models of the acoustic spaces corresponding to the human vocal tract for the Czech vowels /A/ and /I/ and the acoustic space around the human head were used in numerical simulations of phonation. The acoustic resonant characteristics of the FE models were studied using modal and transient analyses (excitation by a short pulse). Transient analysis was also used for numerical simulations of vowel production. Calculated results show that a tonsillectomy causes a frequency shift of the 3rd (~180Hz) and 4th (~120Hz) formants down to the lower frequencies for the vowel /A/ and similarly for the 2nd, 4th and 5th formants for the vowel /I/ (all ~100Hz). The verification of the model was performed on the recordings of patients before and after the tonsillectomy operation. Multi-Dimensional Voice Program (MDVP Advanced, KAY Elemetrics) was used for the comparing of the formant center frequencies. Very small differences in the results of subjective evaluation of the voice before and after tonsillectomy were found.

Klíčová slova anglicky

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

Vydáno

2005-08-31

Nakladatel

The Royal Academy of Music

Místo

London,UK

ISBN

1-905351-01-1

Kniha

The 6th Pan European Voice Conference : PEVOC6 2005

Strany od–do

144–145

Počet stran

2

BIBTEX


@inproceedings{BUT18234,
  author="Pavel {Švancara} and Jaromír {Horáček} and Jan {Vokřál} and Libor {Černý}",
  title="Computational modeling of effect of tonsillectomy on voice production",
  booktitle="The 6th Pan European Voice Conference : PEVOC6 2005",
  year="2005",
  pages="144--145",
  publisher="The Royal Academy of Music",
  address="London,UK",
  isbn="1-905351-01-1"
}