Second International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2001)

Florence, Italy
September 13-15, 2001

Measurement of the Vocal-Fold Vibration Behaviour in Excised Human Larynges

Jaromír Horáček (1), Jan G. Švec (2,3), Jan Veselý (1), Erkki Vilkman (4), Ivo Klepáček (5), Aleš Vetešník (2)

(1) Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
(2) Medical Healthcom, Ltd., Centre for Communication Disorders, Prague, Czech Republic
(3) W.J. Gould Voice Center, The Denver Center for the Performing Arts, Denver, CO, USA
(4) Dep. of Otolaryngology and Phoniatrics., University of Oulu and Helsinki University Central Hospital, Finland
(5) Dep. of Anatomy, 1st Medical Faculty, Charles University, Prague, Czech Republic

The contribution presents information on the experimental investigation of the glottal sound source with excised human larynges. The vocal fold vibrations were excited by airflow and monitored acoustically, electroglottographically as well as by means of laser vibrometry, pressure transducers, videokymography and stroboscopy techniques. The paper is focused on 1) presenting a method for monitoring non-linear vibration effects, when bifurcations appear during phonation by changing the tension of the vocal folds, and 2) on development of a method for casting laryngeal cavities using plaster and metal materials for determining the vocal fold shape in a defined phonation position.

Index Terms. Non-linear dynamics, bifurcation phenomena, laryngoscopy, videokymography, chest-falsetto jumps, vocal fold shape

Full Paper

Bibliographic reference.  Horáček, Jaromír / Švec, Jan G. / Veselý, Jan / Vilkman, Erkki / Klepáček, Ivo / Vetešník, Aleš (2001): "Measurement of the vocal-fold vibration behaviour in excised human larynges", In MAVEBA-2001, 2-7.