Home contents
2016
   N# 1 |
2015
   N# 1 | 2 | 3 | 4 | 5 |
2014
   N# 1 | 2 | 3 | 4 | 5 |
2013
   N# 1 | 2 | 3 | 4 | 5 |
2012
   N# 1 | 2 | 3 | 4 | 5 |
2011
   N# 1 | 2 | 3 | 4 | 5 |
2010
   N# 1 | 2 | 3 | 4 | 5 |
2009
   N# 1 | 2 | 3 | 4 | 5 |
2008
   N# 1 | 2 | 3 | 4 | 5 |
2007
   N# 1 | 2 | 3 | 4 | 5 |
2006
   N# 1 | 2 | 3 | 4 | 5 |
2005
   N# | 1 | 2 | 3 | 4 | 5 |
2004
   N# 1 | 2 | 3 | 4 | 5 |
2003
   N# 1 | 2 | 3 | 4 | 5 |
2002
   N# 1 | 2 | 3 | 4 | 5 |
2001
   N# 1 | 2 | 3 | 4 | 5 |
2000
   N# | 1 | 2 | 3 | 4 | 5 |
1999
   N# 1 | 2 | 3 | 4 | 5 |
1998
   N# 1 | 2 | 3 | 5 |
1997
   N# 1 | 2 | 3 | 4 | 5 |
1996
   N# 4 | 5 |

Click on the number of the review to see the content
Teaching bulletin CME
List of all teaching bulletins CME.
Editor reading committee
Editor reading committee.
To publish...
Instructions for authors
Archives Press and Books
Select of books and press articles.
Mailing list
News information letter.
Subscription prices


If you wish to adjust the size of the displayed characters, click in the high menu on "Your account" and choose the desired size.



  Contents > Previous page > Article detail print Order
o Issue N# 5 - 2007 o

PHONIATRICS

Study on the modeling of the glottic vibration: Towards a nonlinear model of type Stick and Slip


Authors : Garrel R, Giovanni A, Ouaknine MA. (Marseille)

Ref. : Rev Laryngol Otol Rhinol. 2007;128,5:279-288.

Article published in french
Downloadable PDF document french



Summary : Background: Mass springs models of phonation are used to describe the main behaviours observed in human voicing but their principle of functioning, based on harmonic oscillations, can appear complex. Objectives: This study has been conceived to demonstrate that a simple one mass model governed by the principle of relaxation oscillations, as already mentioned by Cornut and Lafon, can also describe, and at a reduced cost, the main behaviours of the vocal folds dynamics. Methods: The theory of relaxation oscillations rests on the existence of phases of accumulation and release of energy. The oscillation between the two phases is self-sustained as soon as the energy source is sufficient to pass over the priming threshold. A numeric simulation allowed the testing of the model behaviour in several situations by using realistic values of the mechanic parameters of the vocal folds, the aerodynamic regimens of the subglottis pressure and of the subglottis flow. Results: As expected, the increasing of the mass leads to a fall of the fundamental frequency and to a rising of the vibratory amplitude of the vocal folds. The phonation threshold pressure is close to the one routinely proposed, 0.1 to 1 kPa, and increases with the fundamental frequency. Conclusion: The relaxation oscillations suggest a simple and realistic model of the physical principle of the vocal cord vibration.

Price : 10.50 €      order
|


Subscribe online - Pay by credit card!


© Copyright 1999-2017 - Revue de Laryngologie   Réalisation - Hébergement ELIDEE