Original title: Augmented M5 geometry of human vocal fold in phonatory position – pilot results
Authors: Hájek, P. ; Horáček, Jaromír ; Švec, J. G.
Document type: Papers
Conference/Event: Engineering mechanics 2024 /30./, Milovy (CZ), 20240514
Year: 2024
Language: eng
Abstract: The presented contribution deals with a newly designed parametric planar geometry of the vocal fold – the augmented M5 model – which is fitted to a real-shaped human vocal fold. The real shape of the vocal fold during a phonatory position for 112 Hz was obtained from a plaster cast and was digitized by optical scanning. The geometry model of the vocal fold surfaces was constructed based on the data from the optical scanner and the augmented M5 model was fitted to a coronal slice of the selected vocal fold surface. The equations of the augmented M5 model are explained and its parameters, tuned to the real vocal fold geometry, are provided. The fitting is done in Python 3.8.5 using the scipy.optimize.curve fit package, which contains nonlinear least squares method. It is shown that the augmented M5 model fits the real data with coefficient R2 close to 1 and the tuned parameters are in a good agreement with the overall vocal fold dimensions and with the parameters of the original 2D M5 model.
Keywords: curve fitting; M5 geometry; non-linear least squares; phonatory position; vocal fold
Project no.: GA24-11121S (CEP)
Funding provider: GA ČR
Host item entry: Engineering mechanics 2024. Book of full texts, ISBN 978-80-214-6235-9, ISSN 1805-8248

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: www.engmech.cz/improc/2024/106.pdf
Original record: https://hdl.handle.net/11104/0363372

Permalink: http://www.nusl.cz/ntk/nusl-669446


The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers