Experimental and computer modelling study of glottal closing velocity during phonation

0505021 - ÚT 2020 RIV CZ eng C - Conference Paper (international conference)
Horáček, Jaromír - Radolf, Vojtěch - Bula, Vítězslav - Šidlof, P. - Geneid, A. - Laukkanen, A. M.
Experimental and computer modelling study of glottal closing velocity during phonation.
Engineering mechanics 2019. Book of full texts. Prague: Institute of Thermomechanics of the Czech Academy of Sciences, 2019 - (Zolotarev, I.; Radolf, V.), s. 153-156. ISBN 978-80-87012-71-0. ISSN 1805-8248.
[Engineering mechanics 2019 /25./. Svratka (CZ), 13.05.2019-16.05.2019]
R&D Projects: GA ČR(CZ) GA19-04477S
Institutional support: RVO:61388998
Keywords : impact stress * maximum glottal area delination rate (MADR) * High speed imaging
OECD category: Acoustics

This preliminary study shows that the impact stress between the colliding vocal folds during phonation should not be evaluated from the maximum velocity of the glottal closing because the velocity of the closing diminishes just before the glottal closure. This phenomenon, which can be caused by a pressure cushion effect in the fast narrowing glottal gap, is demonstrated with measurements from high speed camera images recorded from human and on a physical laboratory model for vowel [u:] phonation and on a three-mass computer model employing a Hertz model of impact force. For a more detailed future study of this phenomenon a faster camera has to be used.

Permanent Link: http://hdl.handle.net/11104/0298376