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Updated: Aug 14, 2026

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
Published on: November 25, 2017
Phonation thresholds as a function of laryngeal size in a two-mass model of the vocal folds
Jorge C Lucero1, Laura L Koenig
1Department of Mathematics, University of Brasília, Brasília 70910-900, Brazil. lucero@mat.unb.br
Abstract:
This letter analyzes the oscillation onset-offset conditions of the vocal folds as a function of laryngeal size. A version of the two-mass model of the vocal folds is used, coupled to a two-tube approximation of the vocal tract in configuration for the vowel /a/. The standard male configurations of the laryngeal and vocal tract models are used as reference, and their dimensions are scaled using a single factor. Simulations of the vocal fold oscillation and oral output are produced for varying values of the scaling factor. The results show that the oscillation threshold conditions become more restricted for smaller laryngeal sizes, such as those appropriate for females and children.
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