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Experimental and computer modelling study of glottal closing velocity during phonation
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SYSNO ASEP 0505021 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Experimental and computer modelling study of glottal closing velocity during phonation Author(s) Horáček, Jaromír (UT-L) RID, ORCID
Radolf, Vojtěch (UT-L) RID, ORCID
Bula, Vítězslav (UT-L) RID
Šidlof, P. (CZ)
Geneid, A. (FI)
Laukkanen, A. M. (FI)Number of authors 6 Source Title Engineering mechanics 2019. Book of full texts. - Prague : Institute of Thermomechanics of the Czech Academy of Sciences, 2019 / Zolotarev I. ; Radolf V. - ISSN 1805-8248 - ISBN 978-80-87012-71-0 Pages s. 153-156 Number of pages 4 s. Publication form Print - P Action Engineering mechanics 2019 /25./ Event date 13.05.2019 - 16.05.2019 VEvent location Svratka Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords impact stress ; maximum glottal area delination rate (MADR) ; High speed imaging Subject RIV BI - Acoustics OECD category Acoustics R&D Projects GA19-04477S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 UT WOS 000613255300033 DOI 10.21495/71-0-153 Annotation 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.
Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2020
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