scholarly journals Low-Cost High-Speed Imaging System for Observing Vocal Fold Vibration in Voice Disorders

ORL ◽  
2012 ◽  
Vol 74 (4) ◽  
pp. 208-210 ◽  
Author(s):  
Kenichi Kaneko ◽  
Koichi Sakaguchi ◽  
Masato Inoue ◽  
Haruo Takahashi
Keyword(s):  
Vocal Fold ◽  
High Speed ◽  
Imaging System ◽  
Low Cost ◽  
Voice Disorders ◽  
High Speed Imaging ◽  
Vocal Fold Vibration

SP264 – Vocal fold vibration observed by low-cost high-speed imaging

2009 ◽  
Vol 141 (3) ◽  
pp. P178-P178
Author(s):  
Kenichi Kaneko ◽  
Haruo Takahashi ◽  
Koichi Sakaguchi ◽  
Masato Inoue
Keyword(s):  
Vocal Fold ◽  
High Speed ◽  
Low Cost ◽  
High Speed Imaging ◽  
Vocal Fold Vibration

Empirical Eigenfunctions and Medial Surface Dynamics of a Human Vocal Fold

2005 ◽  
Vol 44 (03) ◽  
pp. 384-391 ◽  
Author(s):  
N. Tayama ◽  
D. A. Berry ◽  
M. Döllinger
Keyword(s):  
Vocal Fold ◽  
High Speed ◽  
Computational Models ◽  
Imaging System ◽  
Vocal Folds ◽  
Sustained Oscillation ◽  
Medial Surface ◽  
Physical Mechanisms ◽  
Vocal Fold Vibration ◽  
Modes Of Vibration

Summary Objectives: The purpose of this investigation was to use an excised human larynx to substantiate physical mechanisms of sustained vocal fold oscillation over a variety of phonatory conditions. During sustained, flow-induced oscillation, dynamical data was collected from the medial surface of the vocal fold. The method of Empirical Eigenfunctions was used to analyze the data and to probe physical mechanisms of sustained oscillation. Methods: Thirty microsutures were mounted on the medial margin of a human vocal fold. Across five distinct phonatory conditions, the vocal fold was set into oscillation and imaged with a high-speed digital imaging system. The position coordinates of the sutures were extracted from the images and converted into physical coordinates. Empirical Eigenfunctions were computed from the time-varying physical coordinates, and mechanisms of sustained oscillation were explored. Results: Using the method of Empirical Eigenfunctions, physical mechanisms of sustained vocal fold oscillation were substantiated. In particular, the essential dynamics of vocal fold vibration were captured by two dominant Empirical Eigenfunctions. The largest Eigenfunction primarily captured the alternating convergent/ divergent shape of the medial surface of the vocal fold, while the second largest Eigenfunction primarily captured the lateral vibrations of the vocal fold. Conclusions: The hemi-larynx setup yielded a view of the medial surface of the vocal folds, revealing the tissue vibrations which produced sound. Through the use of Empirical Eigenfunctions, the underlying modes of vibration were computed, disclosing physical mechanisms of sustained vocal fold oscillation. The investigation substantiated previous theoretical analyses and yielded significant data to help evaluate and refine computational models of vocal fold vibration.

Quantitative analysis of vocal fold vibration during register change by high-speed digital imaging system

2002 ◽  
Vol 111 (5) ◽  
pp. 2477 ◽  
Author(s):  
Masanobu Kumada ◽  
Noriko Kobayashi ◽  
Hajime Hirose ◽  
Niro Tayama ◽  
Hiroshi Imagawa ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Digital Imaging ◽  
Vocal Fold ◽  
High Speed ◽  
Imaging System ◽  
Vocal Fold Vibration ◽  
Digital Imaging System

scholarly journals Analysis of Human Vocal Fold Vibration by Means of Glottal Velocity Measurement and High-Speed Imaging

2009 ◽  
Vol 4 (2) ◽  
pp. 346-355
Author(s):  
Shiro ARII ◽  
Hideyuki KATAOKA ◽  
Yoshitaka OCHIAI ◽  
Kensaku HASEGAWA ◽  
Toyohiko SUZUKI ◽  
...  
Keyword(s):  
Velocity Measurement ◽  
Vocal Fold ◽  
High Speed ◽  
High Speed Imaging ◽  
Vocal Fold Vibration

Investigation of the Immediate Effects of Humming on Vocal Fold Vibration Irregularity Using Electroglottography and High-speed Laryngoscopy in Patients With Organic Voice Disorders

2017 ◽  
Vol 31 (1) ◽  
pp. 48-56 ◽  
Author(s):  
Carien Vlot ◽  
Makoto Ogawa ◽  
Kiyohito Hosokawa ◽  
Toshihiko Iwahashi ◽  
Chieri Kato ◽  
...  
Keyword(s):  
Vocal Fold ◽  
High Speed ◽  
Voice Disorders ◽  
Vocal Fold Vibration

High-Speed Imaging to Study an Auto-Oscillating Vocal Fold Replica for Different Initial Conditions

2017 ◽  
Vol 09 (05) ◽  
pp. 1750064 ◽  
Author(s):  
A. Van Hirtum ◽  
X. Pelorson
Keyword(s):  
Vocal Fold ◽  
High Speed ◽  
Initial Conditions ◽  
Vocal Folds ◽  
High Speed Imaging ◽  
Human Voice ◽  
Manual Intervention ◽  
Geometrical Features ◽  
Upstream Pressure

Experiments on mechanical deformable vocal folds replicas are important in physical studies of human voice production to understand the underlying fluid–structure interaction. At current date, most experiments are performed for constant initial conditions with respect to structural as well as geometrical features. Varying those conditions requires manual intervention, which might affect reproducibility and hence the quality of experimental results. In this work, a setup is described which allows setting elastic and geometrical initial conditions in an automated way for a deformable vocal fold replica. High-speed imaging is integrated in the setup in order to decorrelate elastic and geometrical features. This way, reproducible, accurate and systematic measurements can be performed for prescribed initial conditions of glottal area, mean upstream pressure and vocal fold elasticity. Moreover, quantification of geometrical features during auto-oscillation is shown to contribute to the experimental characterization and understanding.

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