Modelování funkce hlasivek na základě principu tlakové bubliny

VOCAL FOLDS FUNCTION MODELLING BY MEANS OF THE PRINCIPLE OF COMPRESSIVE AIR BUBBLE

conference paper

en

Because of the lack of clarity and numerous weak points found in the principles as defined by different authors in the literature there has been a new principle developed and defined, initially called „compressed air bubble“, in short „bubble“. According to this principle of the vocal folds function, the main forces acting on the vocal folds during phonation are as follows: · subglottic pressure under the vocal folds and in the whole trachea; the overpressure acts on the relatively large inner surface of the subglottic area, producing a considerable force opening the vocal folds · resilient forces of the vocal folds muscles which act against the opening of the vocal folds · inertial forces of the vocal folds; inertial forces of the air bubble cannot play a significant role with regard to the low value of air density, small size of the moved bubble and also to small changes of the airflow speed.

V důsledku nejasností mnoha principů o funkci hlasivek prezentovaných v literatuře byl definován nový princip na základě "bubliny tlakového vzduchu". Na základě tohoto principu hlavní síly působící na hlasivky jsou: – subglotický tlak pod hlasivkami – pružné síly hlasivek – setravčné síly struktury hlasivek Setrvačné síly hlasivek nemohou hrát důležitou roli vzhledem k nízké hustotě vzduchu, malé velikosti bubliny a malých změn rychlosti proudícího vzduchu.

Because of the lack of clarity and numerous weak points found in the principles as defined by different authors in the literature there has been a new principle developed and defined, initially called „compressed air bubble“, in short „bubble“. According to this principle of the vocal folds function, the main forces acting on the vocal folds during phonation are as follows: · subglottic pressure under the vocal folds and in the whole trachea; the overpressure acts on the relatively large inner surface of the subglottic area, producing a considerable force opening the vocal folds · resilient forces of the vocal folds muscles which act against the opening of the vocal folds · inertial forces of the vocal folds; inertial forces of the air bubble cannot play a significant role with regard to the low value of air density, small size of the moved bubble and also to small changes of the airflow speed.

hlasivky, externí buzení, experiment, laryngektomie

vocal folds, external excitation, experiment, laryngectomy

2004

08.09.2002

University of Denver

Denver, USA

International Conference on Voice Physiology and Biomechanics

5