Název:
Air-pressure characteristics and visualization of bubbling effect in water resistance therapy
Autoři:
Radolf, Vojtěch ; Horáček, Jaromír ; Bula, Vítězslav ; Laukkanen, A. M. Typ dokumentu: Příspěvky z konference Konference/Akce: Engineering Mechanics 2014 /20./, Svratka (CZ), 2014-05-12 / 2014-05-15
Rok:
2014
Jazyk:
eng
Abstrakt: This study investigates the influence of a widely used method in voice training and therapy, phonation into a resonance tube with the outer end submerged in water (‘water resistance therapy’ with bubbling effect). Acoustic and electroglottographic (EGG) signals and air pressures in the mouth cavity were registered and the formation of bubbles was studied using high speed camera. Bubbling frequency dominates in the spectra of the pressure signal being about 15 dB higher than the amplitude of the first harmonic, which reflects the fundamental frequency of the vocal folds’ vibration. Separation of the bubbles 10 cm under water surface starts when the buoyancy force acting on the bubble is approximately equal to the aerodynamic force in the tube.
Klíčová slova:
biomechanics of voice; phonation into tubes; voice therapy Číslo projektu: GPP101/12/P579 (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Engineering mechanics 2014, ISBN 978-80-214-4871-1, ISSN 1805-8248
Instituce: Ústav termomechaniky AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0239489