Comparison of computed and measured acoustic characteristics of an artificially lengthened vocal tract

0421795 - ÚT 2014 RIV IT eng C - Conference Paper (international conference)
Radolf, Vojtěch - Horáček, Jaromír - Laukkanen, A. M.
Comparison of computed and measured acoustic characteristics of an artificially lengthened vocal tract.
Models and Analysis of Vocal Emissions for Biomedical Applications - proceedings. Firenze: Firenze University, 2013 - (Manfredi, C.), s. 51-53. ISBN 978-88-6655-469-1.
[Models and Analysis of Vocal Emissions for Biomedical Applications /8./. Firenze (IT), 16.12.2013-18.12.2013]
R&D Projects: GA ČR GPP101/12/P579
Institutional support: RVO:61388998
Keywords : biomechanics of voice * phonation into tubes * formant frequency
Subject RIV: BI - Acoustics

The First formant frequency F1 of a human vocal tract (VT) prolonged with a glass tube was measured for a VT model with solid walls and a real human VT, and the results were compared to a mathematical model. The experiments with the VT model confirmed the legitimacy of an assumption of the solid walls in the mathematical simulations of acoustical characteristics of the artificial VT plexiglass model prolonged with the tube. The measured F1=73 Hz well corresponded to the computed value 78 Hz. However, the in vivo experiments in human, performed in a similar way, showed a much higher value of F1 at about 200 Hz, that is caused by soft tissues on the walls of real human VT cavities.
Permanent Link: http://hdl.handle.net/11104/0228602