Number of the records: 1
Experimental investigation of air pressure, acoustic characteristics and vibrations of vocal folds on a complex physical model of phonation in humans.
- 1.
SYSNO ASEP 0392222 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Experimental investigation of air pressure, acoustic characteristics and vibrations of vocal folds on a complex physical model of phonation in humans. Author(s) Horáček, Jaromír (UT-L) RID, ORCID
Radolf, Vojtěch (UT-L) RID, ORCID
Bula, Vítězslav (UT-L) RID
Veselý, Jan (UT-L)
Laukkanen, A. M. (FI)Source Title ENGINEERING MECHANICS 2013. - Praha : Insitute of Thermomechanics ASCR, v. v. i., 2013 / Zolotarev I. - ISSN 1805-8248 - ISBN 978-80-87012-46-8
S. 55-56Number of pages 2 s. Publication form Print - P Action Engineering Mechanics 2013 /19./ Event date 13.05.2013-16.05.2013 VEvent location Svratka Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords biomechanics of voice ; subglottal, oral and transglottal pressure ; flow resistance Subject RIV BI - Acoustics R&D Projects GAP101/12/1306 GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 Annotation The contribution aims to provide material that can be used in development of more realistic physical as well as theoretical models of voice production. The experimental set-up, methodology and the results of measurement of airflow rate, subglottal, oral and generated acoustic air pressures are presented together with the simultaneously measured flow-induced vibrations of a vocal folds replica, made of soft silicon rubber, and recorded by a high speed camera. The data were measured during a ‘soft’ phonation just above the phonation onset, given by the phonation threshold airflow rate, and during a ‘normal’ phonation for the airflow rate of about three times higher. A model of the human vocal tract in the position for production of vowel [u:] was used and the flow resistance was raised by phonating into a glass resonance tube either in the air or having the other end of the tube submerged under water, and by phonating into a narrow straw. The results for the pressures presented in time and frequency domain are comparable with the physiological ranges and limits measured in humans for ordinary phonation and for production of vocal exercises used in voice therapy. 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 2014
Number of the records: 1