Resonance Tube or Lax Vox?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00469140" target="_blank" >RIV/61388998:_____/17:00469140 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jvoice.2016.10.024" target="_blank" >http://dx.doi.org/10.1016/j.jvoice.2016.10.024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jvoice.2016.10.024" target="_blank" >10.1016/j.jvoice.2016.10.024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Resonance Tube or Lax Vox?

Popis výsledku v původním jazyce

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.nMethods. 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.nResults. 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.nConclusions. 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.

Název v anglickém jazyce

Resonance Tube or Lax Vox?

Popis výsledku anglicky

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.nMethods. 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.nResults. 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.nConclusions. 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

<a href="/cs/project/GA16-01246S" target="_blank" >GA16-01246S: Počítačové a experimentální modelování samobuzených kmitů hlasivek a vliv jejich poškození na lidský hlas</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Voice

ISSN

0892-1997

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

430-437

Kód UT WoS článku

000406147000006

EID výsledku v databázi Scopus

2-s2.0-85008430178