TITLE

Theoretical Analysis of Maximum Flow Declination Rate Versus Maximum Area Declination Rate in Phonation

AUTHOR(S)
Titze, Ingo R.
PUB. DATE
April 2006
SOURCE
Journal of Speech, Language & Hearing Research;Apr2006, Vol. 49 Issue 2, p439
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Purpose: Maximum flow declination rate (MFDR) in the glottis is known to correlate strongly with vocal intensity in voicing. This declination, or negative slope on the glottal airflow waveform, is in part attributable to the maximum area declination rate (MADR) and in part to the overall inertia of the air column of the vocal tract (lungs to lips). The purpose of this theoretical study was to show the possible contributions of air inertance and MADR to MFDR. Method: A simplified computational model of the kinematics of vocal fold movement was utilized to compute a glottal area function. The glottal flow was computed interactively with lumped vocal tract parameters in the form of resistance and inertive reactance. Results: It was shown that MADR depends almost entirely on the ratio of vibrational amplitudes of the lower to upper margins of the vocal fold tissue. Adduction, vertical phase difference, and prephonatory convergence of the glottis have a lesser effect on MADR. A relatively simple rule was developed that relates MFDR to a vibrational amplitude ratio and vocal tract inertance. Conclusion: It was concluded that speakers and singers have multiple options for control of intensity, some of which involve more source-filter interaction than others.
ACCESSION #
20727206

 

Related Articles

  • Measurement of Vocal Fold Collision Forces During Phonation: Methods and Preliminary Data. Gunter, Heather E.; Howe, Robert D.; Zeitels, Steven M.; Kobler, James B.; Hillman, Robert E. // Journal of Speech, Language & Hearing Research;Jun2005, Vol. 48 Issue 3, p567 

    Forces applied to vocal fold tissue as the vocal folds collide may cause tissue injury that manifests as benign organic lesions. A novel method for measuring this quantity in humans in vivo uses a low-profile force sensor that extends along the length and depth of the glottis. Sensor design...

  • Polydimethylsiloxane Particles for Permanent Injection Laryngoplasty. Sittel, Christian; Echternach, Matthias; Federspil, Philipp A.; Plinkert, Peter K. // Annals of Otology, Rhinology & Laryngology;Feb2006, Vol. 115 Issue 2, p103 

    Objectives: Polydimethylsiloxane (PDMS) particles are a nonresorbable material that allows for permanent vocal fold augmentation. This study investigated morbidity and voice quality In patients treated for unilateral vocal fold paralysis by injection of PDMS particles. Methods: Fourteen patients...

  • High Speed Observation of Spatiotemporal Chaos in a Voice Production System. Yu Zhang; Jiang, Jack J. // AIP Conference Proceedings;2006, Vol. 838 Issue 1, p337 

    The spatial-temporal chaos has recently become the subject of intensive experimental and theoretical investigations. Studying vibratory dynamics of the vocal folds is important for natural voice productions. Disordered voices are usually observed in laryngeal pathologies, such as laryngeal...

  • Glottal Function Index: A Predictor of Glottal Disorders in Children. Cohen, Jacob T.; Oestreicher-Kedem, Yael; Fliss, Dan M.; DeRowe, Ari // Annals of Otology, Rhinology & Laryngology;Feb2007, Vol. 116 Issue 2, p81 

    Objectives: Hyperkinetic laryngeal behaviors may be used to achieve glottal closure in the presence of vocal cord disorders. In adults, the Glottal Function Index (GFI) is a validated self-administered survey used to evaluate glottal insufficiency. In children, the relationships between glottal...

  • The INFVo perceptual rating scale for substitution voicing: development and reliability. Moerman, Mieke; Martens, Jean-Pierre; Crevier-Buchman, Lise; Haan, Else; Grand, Stephanie; Tessier, Christophe; Woisard, Virginie; Dejonckere, Philippe // European Archives of Oto-Rhino-Laryngology;May2006, Vol. 263 Issue 5, p435 

    In this paper, an experimental study of inter-judge consistency for the different dimensions of a recently proposed new scale for the rating of substitution voices is presented. The IINFVo rating scale tries to score five parameters, namely impression, intelligibility, noise, fluency and...

  • voice, loss of. Peters, Michael // BMA A-Z Family Medical Encyclopedia;2004, p797 

    An encyclopedia entry for the medical condition "voice, loss of" is presented. It refers to the inability of a person to speak normally. Some of the common causes of temporary partial loss of voice include the straining of the muscles of the larynx and inflammation of the vocal cords in...

  • Effectiveness of Laryngostroboscopy for Monitoring the Evolution of Functional Dysphonia after Rehabilitator Treatment. Halawa, Wasim Elhendi; Muñoz, Irene Vázquez; Perez, Sofía Santos // Indian Journal of Otolaryngology & Head & Neck Surgery;Dec2013, Vol. 65 Issue 4, p322 

    The aim of this study is to evaluate the effectiveness of the laryngostroboscopy for monitoring the evolution of patients with functional dysphonia before and after the logopedic vocal treatment. We performed a prospective observational study of 65 dysphonic patients diagnosed of functional...

  • Operativno lečenje odraslih sa obostranom paralizom glasnica. Milovanović, J. P.; Djukić, V. B.; Milovanović, A. P.; Djordjević, V. Ž.; Arsović, N. A.; Radošić, N.; Stevandić, N.; Slijepčević, N. A. // Acta Chirurgica Iugoslavica;2009, Vol. 56 Issue 3, p109 

    Ordinary clinical manifestation of the patient with bilaterla vocal fold paralysis is inability of abducting the cords with a result of narrowing the glottic space , causing inspiratory stridor and mild dysphonia. Such patients can be life threatened due to narrowing airway. Some kind of syrgery...

  • Relation of Perceived Breathiness to Laryngeal Kinematics and Acoustic Measures Based on Computational Modeling. Samlan, Robin A.; Story, Brad H.; Bunton, Kate; Oetting, Janna; Zhaoyan Zhang // Journal of Speech, Language & Hearing Research;Aug2013, Vol. 56 Issue 4, p1209 

    Purpose: In this study, the authors sought to determine (a) how specific vocal fold structural and vibratory features relate to breathy voice quality and (b) the relation of perceived breathiness to 4 acoustic correlates of breathiness. Method: A computational, kinematic model of the vocal fold...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics