Počet záznamů: 1
Resonance Tube or Lax Vox?
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SYSNO ASEP 0469140 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Resonance Tube or Lax Vox? Tvůrce(i) Tyrmi, J. (FI)
Radolf, Vojtěch (UT-L) RID, ORCID
Horáček, Jaromír (UT-L) RID, ORCID
Laukkanen, A. M. (CZ)Celkový počet autorů 4 Zdroj.dok. Journal of Voice. - : Elsevier - ISSN 0892-1997
Roč. 31, č. 4 (2017), s. 430-437Poč.str. 8 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova flow resistance ; EGG ; voice therapy ; water resistance therapy ; air pressure in phonation Vědní obor RIV BI - Akustika a kmity Obor OECD Acoustics CEP GA16-01246S GA ČR - Grantová agentura ČR Institucionální podpora UT-L - RVO:61388998 UT WOS 000406147000006 EID SCOPUS 85008430178 DOI 10.1016/j.jvoice.2016.10.024 Anotace Objective. This study compares the flow resistance of Resonance tube (RT) and Lax Vox tube (LVT) when submerged 2 cm and 10 cm in water, as well as phonation into the tubes in these conditions.
Methods. In the in vitro experiment, the air pressure for flow rates of 60-600 mL/s was measured at the tube inlet, when the outer end of the tube was submerged 2 cm and 10 cm below water surface in 30 degrees, 45 degrees, and 90 degrees angle. In the in vivo experiment, 14 subjects phonated in habitual loudness and loudly into both tubes, with the outer end 2 cm and 10 cm in water. RT was immersed in a 45 degrees angle and LVT in a 90 degrees angle in water. Oral pressure, contact quotient from electroglottographic signal, and sound pressure level were studied. Sensations during phonation were reported in an interview.
Results. Flow resistance was slightly lower with LVT than with RT, and slightly lower for smaller immersion angles. In habitual loudness, transglottic pressure and frequency of oral pressure variation were lower for LVT phonation and amplitude of oral pressure variation was higher for LVT 2 cm in water. Some subjects preferred RT, whereas others preferred LVT or reported no differences between them.
Conclusions. The tubes differed slightly in flow resistance. Higher oral pressure oscillation with LVT 2 cm in water may offer stronger massage effect on vocal folds.Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2018
Počet záznamů: 1