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Related Experiment Video

Updated: May 14, 2026

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
10:13

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Published on: November 25, 2017

Phonovibrographic wavegrams: visualizing vocal fold kinematics.

Jakob Unger1, Tobias Meyer, Christian T Herbst

  • 1Department of Computer Science, University of Applied Science Trier, Schneidershof, 54293 Trier, Germany. unger@hochschule-trier.de

The Journal of the Acoustical Society of America
|February 1, 2013
PubMed
Summary

A new 3D visualization method, the phonovibrographic wavegram, analyzes vocal fold kinematics from high-speed videos. This technique offers a comprehensive view of vocal fold vibration, revealing hidden details in both healthy and pathologic subjects.

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Area of Science:

  • Laryngology
  • Biomedical Engineering
  • Vibrational Analysis

Background:

  • Endoscopic high-speed laryngoscopy provides high-resolution data on vocal fold kinematics.
  • Analyzing large datasets from high-speed videos presents a significant challenge.

Purpose of the Study:

  • To introduce a novel 3D visualization method for analyzing vocal fold kinematics from endoscopic high-speed videos.
  • To combine and extend phonovibrogram and electroglottographic wavegram approaches.

Main Methods:

  • A phonovibrographic wavegram is created by segmenting, normalizing, and concatenating individual cycles from phonovibrograms.
  • The resulting 3D scalar field is visualized using various rendering techniques.

Main Results:

  • The phonovibrographic wavegram visualizes glottal closure, amplitude, symmetry, periodicity, and phase information.
  • Demonstrated effectiveness in two healthy and three pathologic subjects.
  • Reveals kinematic details not apparent with other methods.

Conclusions:

  • The phonovibrographic wavegram offers a compact and intuitive method for comprehensive vocal fold kinematics analysis.
  • This technique enhances the understanding of vocal fold vibration characteristics.