Model funkce hlasivek při mluvení nahlas

The Model of the Vocal Folds Function when Speaking Aloud

conference paper

en

The vocal folds are the organ producing human voice. The literature presents several models of the vocal folds function, still none of them offers a consistent and definite explanation of their function. Most authors base their model constructions on Bernoulli´ effect in which the driving force of the vocal folds is the air underpressure during its passage through the narrowed glottis. Due to the numerous weak points found in the principles as shortly defined above there has been a new principle defined and developed, preliminary called „compressed air bubbles“, in short „bubbles“. The paper focuses on this new functional model of generating loud vowels. The finite-element model is used for evaluation and confirmation of the “bubbles” principle.

Hlasivky jsou orgánem pro generování lidského hlasu. V literatuře se objevuje několik modifikovaných verzí funkce hlasivek. Převládá v nich společný názor, ve kterém ústřední myšlenkou je výrazný vliv tzv. Bernoulliho podtlaku v místě glotis (štěrbina mezi hlasivkami) při zvýšené rychlosti proudění vzduchu zúženým místem mezi hlasivkami, čímž je usnadněno uzavírání hlasivek. Efekt Bernoulliho podtlaku takto prý přispívá ke vratným pružným silám struktury vlastních hlasivek. U výše zjednodušeně uvedené verze funkce hlasivek hraje důležitou funkci a roli samotný proudící vzduch a jeho proměnné parametry (tlak, rychlost, hmotnost).

The vocal folds are the organ producing human voice. The literature presents several models of the vocal folds function, still none of them offers a consistent and definite explanation of their function. Most authors base their model constructions on Bernoulli´ effect in which the driving force of the vocal folds is the air underpressure during its passage through the narrowed glottis. Due to the numerous weak points found in the principles as shortly defined above there has been a new principle defined and developed, preliminary called „compressed air bubbles“, in short „bubbles“. The paper focuses on this new functional model of generating loud vowels. The finite-element model is used for evaluation and confirmation of the “bubbles” principle.

hlasivky, externí buzení, vokální trakt

vocal folds, external excitation, experiment, laryngectomy

2004

05.07.2004

International Federation for Medical and Biological Engineering

Ischia, Naples-Italy

88-7780-308-8

MEDICON and HEALTH TELEMATICS 2004

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