Shaker: Preliminary observations of a potential device for voice training and therapy

0518902 - ÚT 2020 RIV IT eng C - Conference Paper (international conference)
Laukkanen, A. M. - Horáček, Jaromír - Radolf, Vojtěch
Shaker: Preliminary observations of a potential device for voice training and therapy.
Models and analysis of vocal emissions for biomedical applications. Firenze: Firenze University Press, 2019 - (Manfredi, C.), s. 213-216. ISBN 978-88-6453-951-5. ISSN 2704-601X.
[International workshop Models and analysis of vocal emissions for biomedical applications /11./. Firenze, Italy (IT), 17.12.2019-19.12.2019]
R&D Projects: GA ČR(CZ) GA19-04477S
Institutional support: RVO:61388998
Keywords : air pressure * airflow * EGG * larynx * position * physical modelling
OECD category: Acoustics

A mechanic buzzer has originally been developed for clearing mucus from the lungs and trachea. A recent study tested the device on phonation and reported decreased vocal and laryngeal symptoms immediately after practicing on it. This study presents measured 1) air pressure threshold and airflow threshold for buzzing during blowing and phonation into the buzzer using a physical model of voice production, and 2) oral pressure and electroglottogram (EGG) for two participants, also while blowing and phonating into the device. In both tests, a narrow mouthpiece out of two options was used, and the device was kept in horizontal and in upright positions. The buzzing roughly seems to correspond to water resistance therapy, i.e. phonation through a glass resonance tube submerged into water. Buzzer horizontally corresponds to 5cm submersion, and buzzer upright to 10 cm submersion of the tube in water.
Permanent Link: http://hdl.handle.net/11104/0304318