Engineering Mechanics

Proceedings Vol. 31 (2025)

ENGINEERING MECHANICS 2025

Copyright © 2025 Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague

 

Štorkán J., Vampola T.
pages 197 - 200, full text

This study aimed to evaluate the influence of steady flow on the position of resonant peaks of human voice for phonation of vowel [a:] and its use for the energy redistribution in the frequency spectrum during the singing. The study applied 3D volume models of the vocal tract based on computer tomography images of a female speaker converted to the simplified 1D model assembled from the cylindrical elements. The 1D model considers the acoustic energy dissipation due to friction losses inside the vocal tract and emitting energy from the mouth. The steady flow higher than 3 l/s shift resonance F3 and F4 to the lower values and increases positively the amount of acoustic energy in the frequency interval 2.5-4 kHz and can influence support the stronger voice production.

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