scholarly journals Modeling the effects of a posterior glottal opening on vocal fold dynamics with implications for vocal hyperfunction

2014 ◽  
Vol 136 (6) ◽  
pp. 3262-3271 ◽  
Author(s):  
Matías Zañartu ◽  
Gabriel E. Galindo ◽  
Byron D. Erath ◽  
Sean D. Peterson ◽  
George R. Wodicka ◽  
...  
Keyword(s):  
Vocal Fold ◽  
Vocal Hyperfunction ◽  
Vocal Fold Dynamics

Nonlinear Vocal Fold Dynamics in a Two-Mass Model of Speech Arising From Asymmetric Intraglottal Flow

2011 ◽  
Author(s):  
Byron D. Erath ◽  
Matías Zañartu ◽  
Sean D. Peterson ◽  
Michael W. Plesniak
Keyword(s):  
Vocal Fold ◽  
Vocal Tract ◽  
Vocal Folds ◽  
Attractive Alternative ◽  
Nonlinear Phenomena ◽  
Mass Model ◽  
Sustained Oscillations ◽  
Voiced Speech ◽  
Subglottal Pressure ◽  
Vocal Fold Dynamics

Voiced speech is initiated as air is expelled from the lungs and passes through the vocal tract inciting self-sustained oscillations of the vocal folds. While various approaches exist for investigating both normal and pathological speech, the relative inaccessibility of the vocal folds make multi-mass speech models an attractive alternative. Their behavior has been benchmarked with excised larynx experiments, and they have been used as analysis tools for both normal and disordered speech, including investigations of paralysis, vocal tremor, and breathiness. However, during pathological speech, vocal fold motion is often unstructured, resulting in chaotic motion and a wealth of nonlinear phenomena. Unfortunately, current methodologies for multi-mass speech models are unable to replicate the nonlinear vocal fold behavior that often occurs in physiological diseased voice for realistic values of subglottal pressure.

Model based comparison of vocal fold dynamics between children and adults

2015 ◽  
Vol 138 (3) ◽  
pp. 1779-1779 ◽  
Author(s):  
Michael Döllinger ◽  
Denis Dubrovskiy ◽  
Eva Beck ◽  
Rita Patel
Keyword(s):  
Vocal Fold ◽  
Model Based ◽  
Vocal Fold Dynamics

The influence of epilarynx area on vocal fold dynamics

2006 ◽  
Vol 135 (5) ◽  
pp. 724-729 ◽  
Author(s):  
Michael Döllinger ◽  
David A. Berry ◽  
Douglas W. Montequin
Keyword(s):  
Vocal Fold ◽  
Vocal Fold Dynamics

Corrections to “Learning to Detect Vocal Hyperfunction From Ambulatory Neck-Surface Acceleration Features: Initial Results For Vocal Fold Nodules” [Jun 14 1668-1675]

2015 ◽  
Vol 62 (10) ◽  
pp. 2544-2544
Author(s):  
Marzyeh Ghassemi ◽  
Jarrad H. Van Stan ◽  
Daryush D. Mehta ◽  
Matias Zanartu ◽  
Harold A. Cheyne ◽  
...  
Keyword(s):  
Vocal Fold ◽  
Vocal Hyperfunction ◽  
Initial Results ◽  
Vocal Fold Nodules

Identifying relevant analysis parameters for the classification of vocal fold dynamics

2011 ◽  
Vol 130 (4) ◽  
pp. 2550-2550
Author(s):  
Daniel Voigt ◽  
Ulrich Eysholdt
Keyword(s):  
Vocal Fold ◽  
Vocal Fold Dynamics

Objective Assessment of Vocal Hyperfunction

1989 ◽  
Vol 32 (2) ◽  
pp. 373-392 ◽  
Author(s):  
Robert E. Hillman ◽  
Eva B. Holmberg ◽  
Joseph S. Perkell ◽  
Michael Walsh ◽  
Charles Vaughan
Keyword(s):  
Experimental Design ◽  
Vocal Fold ◽  
Clinical Investigation ◽  
Objective Assessment ◽  
Air Flow ◽  
Voice Disorders ◽  
Maximum Flow ◽  
Theoretical Framework ◽  
Vocal Hyperfunction ◽  
Initial Results

This report describes the experimental design and initial results of an ongoing clinical investigation of voice disorders. Its major focus is the development and use of quantitative measures to provide objective descriptions of conditions referred to as "vocal hyperfunction." The experimental design for this project is based on a descriptive theoretical framework, which holds that there are different types and stages of hyperfunctionally related voice disorders. Data consist of indirect measures derived from noninvasive aerodynamic and acoustic recordings including (a) parameters derived from inverse filtered approximations of the glottal air flow waveform; (b) estimates of transglottal pressure, average glottal air flow, glottal resistance and vocal efficiency; and (c) measures of vocal intensity and fundamental frequency. Initial results (based on comparisons among 15 voice patients and 45 normal speakers) support major assumptions that underlie the theoretical framework, and indicate that the measurement approach being utilized is capable of differentiating hyperfunctional from normal voices and hyperfunctional conditions from one another. Organic manifestations of vocal hyperfunction (nodules, polyps, contact ulcers) are accompanied by abnormally high values for the glottal waveform parameters of AC flow and maximum flow declination rate, suggesting increased potential for vocal fold trauma due to high vocal fold closure velocities and collision forces. In contrast, nonorganic manifestations of hyperfunction (functional disorders) tend to be associated with abnormally high levels of unmodulated DC flow, without high values for AC flow and maximum flow declination rate, suggesting reduced potential for vocal fold trauma. Measures also suggest different underlying mechanisms for nodules and polyps as compared to contact ulcers. Results are discussed relative to predictions based on the theoretical framework for vocal hyperfunction.

scholarly journals Effects of the Epilarynx Area on Vocal Fold Dynamics and the Primary Voice Signal

2012 ◽  
Vol 26 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Michael Döllinger ◽  
David A. Berry ◽  
Georg Luegmair ◽  
Björn Hüttner ◽  
Christopher Bohr
Keyword(s):  
Vocal Fold ◽  
Voice Signal ◽  
Vocal Fold Dynamics

scholarly journals Biomechanical simulation of vocal fold dynamics in adults based on laryngeal high-speed videoendoscopy

PLoS ONE ◽  
2017 ◽  
Vol 12 (11) ◽  
pp. e0187486 ◽  
Author(s):  
Michael Döllinger ◽  
Pablo Gómez ◽  
Rita R. Patel ◽  
Christoph Alexiou ◽  
Christopher Bohr ◽  
...  
Keyword(s):  
Vocal Fold ◽  
High Speed ◽  
Biomechanical Simulation ◽  
Vocal Fold Dynamics

scholarly journals Biomechanical modeling of the three-dimensional aspects of human vocal fold dynamics

2010 ◽  
Vol 127 (2) ◽  
pp. 1014-1031 ◽  
Author(s):  
Anxiong Yang ◽  
Jörg Lohscheller ◽  
David A. Berry ◽  
Stefan Becker ◽  
Ulrich Eysholdt ◽  
...  
Keyword(s):  
Vocal Fold ◽  
Three Dimensional ◽  
Biomechanical Modeling ◽  
Vocal Fold Dynamics
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