Effects of Tube Phonation on Collision and Phonation Threshold Pressures in Mezzo-soprano Voices
2011 (English)In: Pan European Voice Conference (PEVOC9) / [ed] Antoine Giovanni & Nathalie Henrich,, 2011Conference paper (Refereed)
Tube phonation is a voice therapy method widely used in Scandinavia and Germany. Invented by Sovijärvi (1965 & 1969) in the sixties, it is now used to treat several kinds of voice pathologies but also to solve passaggio and speech problems among singers. The subject phonates into a 26-28 cm long tube, typically made of glass, with the other end placed a few cm under water in a bowl. The resulting bubbling causes a modulation of intraoral pressure. Tube phonation is supposed to contribute to the development of appropriate combinations of air flow and subglottal pressure needed for a healthy voice control and/or vocal skill.
The present study is part of a project aiming at exploring the potentials of the collision threshold pressure (CTP) (Enflo and Sundberg, 2009; Enflo et al., 2009), defined as the lowest subglottal pressure needed for vocal fold collision. This pressure may be a valuable complement to the commonly used phonation threshold pressure (PTP), defined as the lowest subglottal pressure needed to obtain and sustain vocal fold vibration. In the present investigation we analysed the effects of tube phonation on these threshold pressures. Twelve mezzo-sopranos with differing levels of singing training participated in the experiment, six highly advanced classically trained singers with daily singing practise, and six modestly experienced choir singers without daily singing practise. Subglottal pressure, EGG and audio were recorded before and after a tube phonation exercise. The tube phonation induced intraoral pressure modulation amplitude of about five cm H2O. Perceptual effects of the tube phonation in these subjects was assessed by a listening test. On average across singers CTP tended to rise, particularly in the less well trained singers. The listening test indicated that tube phonation was associated with a clearly audible improvement of voice function, at least in the less well-trained singers.
Place, publisher, year, edition, pages
Tube phonation, collision pressure, phonation threshold pressures, female singers
National CategoryMedical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-75213OAI: oai:DiVA.org:liu-75213DiVA: diva2:504739
PEVOC9 Marseille, August 2011