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

Quantitative Analysis of Vocal Fold Vibration in Vocal Fold Paralysis With the Use of High-speed Digital Imaging

2016 ◽  
Vol 30 (6) ◽  
pp. 766.e13-766.e22 ◽  
Author(s):  
Akihito Yamauchi ◽  
Hisayuki Yokonishi ◽  
Hiroshi Imagawa ◽  
Ken-Ichi Sakakibara ◽  
Takaharu Nito ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Digital Imaging ◽  
Vocal Fold ◽  
High Speed ◽  
Vocal Fold Paralysis ◽  
Vocal Fold Vibration

Vocal Fold Vibration in Vocal Fold Atrophy: Quantitative Analysis With High-Speed Digital Imaging

2015 ◽  
Vol 29 (6) ◽  
pp. 755-762 ◽  
Author(s):  
Akihito Yamauchi ◽  
Hisayuki Yokonishi ◽  
Hiroshi Imagawa ◽  
Ken-Ichi Sakakibara ◽  
Takaharu Nito ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Digital Imaging ◽  
Vocal Fold ◽  
High Speed ◽  
Vocal Fold Vibration ◽  
Vocal Fold Atrophy

Analysis of vocal fold vibration on prosodic events by high speed digital imaging systems

2002 ◽  
Vol 112 (5) ◽  
pp. 2445-2445
Author(s):  
Masanobu Kumada ◽  
Noriko Kobayashi ◽  
Hajime Hirose ◽  
Niro Tayama ◽  
Hiroshi Imagawa ◽  
...  
Keyword(s):  
Digital Imaging ◽  
Vocal Fold ◽  
High Speed ◽  
Imaging Systems ◽  
Vocal Fold Vibration ◽  
Digital Imaging Systems

High-speed digital imaging laryngoscopy of the neoglottis following supracricoid laryngectomy with cricohyoidoepiglottopexy

2010 ◽  
Vol 124 (11) ◽  
pp. 1234-1238 ◽  
Author(s):  
S Hayashi ◽  
H Hirose ◽  
N Tayama ◽  
H Imagawa ◽  
M Nakayama ◽  
...  
Keyword(s):  
Fundamental Frequency ◽  
Sound Source ◽  
Digital Imaging ◽  
High Speed ◽  
Imaging System ◽  
Vocal Performance ◽  
Inverse Filtering ◽  
Imaging Analysis ◽  
Supracricoid Laryngectomy ◽  
Digital Imaging System

AbstractObjectives:This study aimed to analyse vocal performance and to investigate the nature of the neoglottal sound source in patients who had undergone supracricoid laryngectomy with cricohyoidoepiglottopexy, using a high-speed digital imaging system.Methods:High-speed digital imaging analysis of neoglottal kinetics was performed in two patients who had undergone supracricoid laryngectomy with cricohyoidoepiglottopexy; laryngotopography, inverse filtering analysis and multiline kymography were also undertaken.Results:In case one, laryngotopography demonstrated two vibrating areas: one matched with the primary (i.e. fundamental) frequency (75 Hz) and the other with the secondary frequency (150 Hz) at the neoglottis. In case two, laryngotopography showed two vibrating areas matched with the fundamental frequency (172 Hz) at the neoglottis. The interaction between the two areas was considered to be the sound source in both patients. The waveform of the estimated volume flow at the neoglottis, obtained by inverse filtering analysis, corresponded well to the neoglottal vibration patterns derived by multiline kymography. These findings indicated that the specific sites identified at the neoglottis by the present method were likely to be the sound source in each patient.Conclusions:High-speed digital imaging analysis is effective in locating the sites responsible for voice production in patients who have undergone supracricoid laryngectomy with cricohyoidoepiglottopexy. This is the first study to clearly identify the neoglottal sound source in such patients, using a high-speed digital imaging system.

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

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.

The influence of water resistance therapy on vocal fold vibration: a high-speed digital imaging study

2016 ◽  
Vol 42 (3) ◽  
pp. 99-107 ◽  
Author(s):  
Marco Guzman ◽  
Anne-Maria Laukkanen ◽  
Louisa Traser ◽  
Ahmed Geneid ◽  
Bernhard Richter ◽  
...  
Keyword(s):  
Digital Imaging ◽  
Vocal Fold ◽  
High Speed ◽  
Water Resistance ◽  
Imaging Study ◽  
Vocal Fold Vibration ◽  
Influence Of Water
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