scholarly journals Phonation threshold pressure in a physical model of the vocal folds

1993 ◽  
Vol 94 (3) ◽  
pp. 1762-1762
Author(s):  
Ingo R. Titze ◽  
Michael R. Titze
Keyword(s):  
Physical Model ◽  
Vocal Folds ◽  
Threshold Pressure ◽  
Phonation Threshold Pressure

Glottal geometry and phonation threshold pressure in a vocal fold physical model.

1996 ◽  
Vol 99 (4) ◽  
pp. 2471-2500 ◽  
Author(s):  
Roger W. Chan ◽  
Ingo R. Titze ◽  
Michael R. Titze
Keyword(s):  
Physical Model ◽  
Vocal Fold ◽  
Threshold Pressure ◽  
Phonation Threshold Pressure

Phonation threshold pressure in a physical model of the vocal fold mucosa

1995 ◽  
Vol 97 (5) ◽  
pp. 3080-3084 ◽  
Author(s):  
Ingo R. Titze ◽  
Sheila S. Schmidt ◽  
Michael R. Titze
Keyword(s):  
Physical Model ◽  
Vocal Fold ◽  
Threshold Pressure ◽  
Phonation Threshold Pressure

scholarly journals Age and Sex Comparison of Aerodynamic Phonation Measurements Using Noninvasive Assessment

2021 ◽  
Vol 64 (3) ◽  
pp. 776-791
Author(s):  
Jim R. Lamb ◽  
Austin J. Scholp ◽  
Jack J. Jiang
Keyword(s):  
Vocal Folds ◽  
Threshold Pressure ◽  
Anatomical Changes ◽  
Adult Participant ◽  
Phonation Threshold Pressure ◽  
Subglottal Pressure ◽  
Aerodynamic Parameters ◽  
Noninvasive Assessment ◽  
Laryngeal Resistance ◽  
Age And Sex

Purpose The goal of this study was to present vocal aerodynamic measurements from pediatric and adult participant pools. There are a number of anatomical changes involving the larynx and vocal folds that occur as children age and become adults. Data were collected using two methods of noninvasive aerodynamic assessment: mechanical interruption and labial interruption. Method A total of 154 participants aged 4–24 years old took part in this study. Ten trials were performed for both methods of airway interruption. To perform mechanical interruption, participants phonated /α/ for 10 s trials while a balloon valve interrupted phonation 5 times. For labial interruption, participants said /pα/ 5 times at comfortable and quiet volumes. Aerodynamic measures included subglottal pressure, phonation threshold pressure, mean airflow, laryngeal resistance, and others. Results One hundred one participants (51 females) successfully completed testing with both methods. Eight out of 20 measurements were found to have a statistically significant effect of participant age on measurements. Sex alone had a significant effect on vocal efficiency for the labial quiet method. Conclusions The data discussed here can be used to view age and sex trends in vocal aerodynamic measurements. When using either method of mechanical or labial interruption, participant age needs to be taken into account to properly interpret several aerodynamic parameters. A participant's sex is not as important when using these methods.

Theoretical and experimental results of phonation threshold pressure vs. oscillation frequency of the vocal folds

2008 ◽  
Vol 123 (5) ◽  
pp. 3578-3578
Author(s):  
Jorge C. Lucero ◽  
Annemie Van Hirtum ◽  
Nicolas Ruty ◽  
Julien Cisonni ◽  
Xavier Pelorson
Keyword(s):  
Oscillation Frequency ◽  
Vocal Folds ◽  
Experimental Results ◽  
Threshold Pressure ◽  
Phonation Threshold Pressure

scholarly journals Phonation threshold pressure at large asymmetries of the vocal folds

2020 ◽  
Vol 62 ◽  
pp. 102105
Author(s):  
Jorge C. Lucero ◽  
Xavier Pelorson ◽  
Annemie Van Hirtum
Keyword(s):  
Vocal Folds ◽  
Threshold Pressure ◽  
Phonation Threshold Pressure

scholarly journals Effects of Sulcus Vocalis Depth on Phonation in Three-Dimensional Fluid-Structure Interaction Laryngeal Models

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Changwei Zhou ◽  
Lili Zhang ◽  
Yuanbo Wu ◽  
Xiaojun Zhang ◽  
Di Wu ◽  
...  
Keyword(s):  
Vocal Fold ◽  
Fluid Structure Interaction ◽  
Three Dimensional ◽  
Vocal Folds ◽  
Threshold Pressure ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Phonation Threshold Pressure ◽  
Different Types ◽  
Sulcus Vocalis

Sulcus vocalis is an indentation parallel to the edge of vocal fold, which may extend into the cover and ligament layer of the vocal fold or deeper. The effects of sulcus vocalis depth d on phonation and the vocal cord vibrations are investigated in this study. The three-dimensional laryngeal models were established for healthy vocal folds (0 mm) and different types of sulcus vocalis with the typical depth of 1 mm, 2 mm, and 3 mm. These models with fluid-structure interaction (FSI) are computed numerically by sequential coupling method, which includes an immersed boundary method (IBM) for modelling the glottal airflow, a finite-element method (FEM) for modelling vocal fold tissue. The results show that a deeper sulcus vocalis in the cover layer decreases the vibrating frequency of vocal folds and expands the prephonatory glottal half-width which increases the phonation threshold pressure. The larger sulcus vocalis depth makes vocal folds difficult to vibrate and phonate. The effects of sulcus vocalis depth suggest that the feature such as phonation threshold pressure could assist in the detection of healthy vocal folds and different types of sulcus vocalis.

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