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Updated: Jun 29, 2025
Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
Published on: November 25, 2017
What kind of phonation causes the strongest vocal fold collision? - A hemi-larynx phonation contact pressure study
Florian Scheible1, Raphael Lamprecht1, Casey Schaan2
1Institute of Measurement and Sensor Technology, UMIT - Private University for Health Sciences, Medical Informatics and Technology, Hall in Tirol, Austria.
Abstract:
This paper presents a measurement setup which is able to measure the distribution of small scale pressure on an area of 15.2 mm × 30.4 mm with a sample rate up to 1.2 kHz. It was used to investigate the contact pressures of vocal folds during phonation. This was performed in ex vivo experiments of 11 porcine larynges. The contact pressure at the medial surface and other phonation parameters, as the glottal resistance and the closing velocity of the vocal fold, were measured at different adduction and elongation levels and air flow rates. A statistical analysis was carried out. It could be shown that the contact pressure rises, when the vocal fold is manipulated or when the flow rate is increased.
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