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Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
Published on: November 25, 2017
The shouted voice: A pilot study of laryngeal physiology under extreme aerodynamic pressure
Aude Lagier1,2, Thierry Legou2, Camille Galant2,3
1a Service d'ORL et Chirurgie cervico-faciale, CHU de Liège , Belgium.
Introduction:
The objective was to study the behavior of the larynx during shouted voice production, when the larynx is exposed to extremely high subglottic pressure.
Materials And Methods:
The study involved electroglottographic, acoustic, and aerodynamic analyses of shouts produced at maximum effort by three male participants.
Results And Discussion:
Under a normal speaking voice, the voice sound pressure level (SPL) is proportional to the subglottic pressure. However, when the subglottic pressure reached high levels, the voice SPL reached a maximum value and then decreased as subglottic pressure increased further. Furthermore, the electroglottographic signal sometimes lost its periodicity during the shout, suggesting irregular vocal fold vibration.
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