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How much loading does cough pose on the vocal folds? Preliminary high speed image analysis comparing coughing and phonation
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SYSNO ASEP 0549843 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title How much loading does cough pose on the vocal folds? Preliminary high speed image analysis comparing coughing and phonation Author(s) Horáček, Jaromír (UT-L) RID, ORCID
Bula, Vítězslav (UT-L) RID
Geneid, A. (FI)
Radolf, Vojtěch (UT-L) RID, ORCID
Laukkanen, A. M. (FI)Number of authors 5 Source Title Models and Analysis of Vocal Emissions for Biomedical Applications. - Firenze : Firenze University Press, 2021 / Manfredi C. - ISSN 2704-601X - ISBN 978-88-5518-448-9 Pages s. 109-112 Number of pages 4 s. Publication form Print - P Action International workshop Models and Analysis of Vocal Emissions for Biomedical Applications /12./ Event date 14.12.2021 - 16.12.2021 VEvent location Firenze Country IT - Italy Event type WRD Language eng - English Country IT - Italy Keywords glottal area ; EGG ; oral air pressure ; laryngeal movement ; coughing therapy Subject RIV BI - Acoustics OECD category Acoustics R&D Projects GA19-04477S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 DOI 10.36253/978-88-5518-449-6 Annotation Coughing offers a risk for voice problems by increasing vocal loading. This study estimates loading by measuring glottal area variation from high speed images and subglottic pressure from oral pressure Poral. Phonation on [o:] and coughing at the same Poral (6 Pa) and SPL (93 dB6cm) were compared from one healthy male. In coughing, the glottal width (GW) at the middle of vocal folds (VFs) was 25% larger. GW measured at VF processes was almost unchanged. Maximum glottal opening velocity dGW/dt was nearly 40% higher, maximum glottal declination rate (MWDR) was up to 3 times higher, and MWDR at vocal processes was 13% higher. The acceleration and deceleration values for VFs were 40% and 47% higher, respectively. Fo in the last part of coughing decreased from f0=222 Hz to 77 Hz at phonation offset. In [o:] f0 was 116 Hz. Closed quotient CQ≅0.50 in coughing was close to CQ=0.47 in vowel. Vibration frequency of the false vocal folds (FVFs) registered in the first, rough part of coughing, was 293 Hz. Peak-to-peak value of Poral increased 5.4 times in coughing. During vibration of FVFs in coughing, mean Poral increased from 6 Pa to 70 Pa and Poral p-t-p increased 2.45 times. 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 2023 Electronic address https://fupress.com/catalogo/models-and-analysis-of-vocal-emissions-for-biomedical-applications/7364
Number of the records: 1