Effect of Velopharyngeal Insufficiency on Human Voice Quality

0483422 - ÚT 2018 RIV IT eng C - Conference Paper (international conference)
Vampola, T. - Horáček, Jaromír
Effect of Velopharyngeal Insufficiency on Human Voice Quality.
Models and Analysis of Vocal Emissions for Biomedical Applications. Universita degli Studi di Firenze: Firenze University Press, 2017 - (Manfredi, C.), s. 7-10. ISBN 978-88-6453-606-4.
[International Workshop Models and Analysis of Vocal Emissions for Biomedical Applications /10./. Firenze (IT), 13.12.2017-15.12.2017]
R&D Projects: GA ČR(CZ) GA16-01246S
Institutional support: RVO:61388998
Keywords : human vocal tract * nasal cavities * bioacoustic * FE parametric model
OECD category: Acoustics

First a complex accurate parametric three-dimensional (3D) finite element (FE) model of the human acoustic cavities of the vocal tract for nasalized vowel [a:] was developed from which a simplified lumped model was created using a special reduction procedure. The simplified lumped model allows numerical simulation of the effects of nasality on the acoustic resonance and antiresonance characteristics of the vocal tract. The model is computationally effective and enables changes of the acoustic cavities continuously within the physiological limits. Usage of the sophisticated 3D FE model of the vocal tract for investigating influence of vocal tract shape modifications on the changes of acoustic resonance properties is time consuming. The accuracy of the results obtained by the reduced model is examined by comparing the results with the full 3D FE model.
Permanent Link: http://hdl.handle.net/11104/0279351