Air-pressure, vocal fold vibration and acoustic characteristics of phonation during vocal exercising. Part 1. Measurement in vivo

Title:

Air-pressure, vocal fold vibration and acoustic characteristics of phonation during vocal exercising. Part 1. Measurement in vivo

Creator:

Radolf, Vojtěch, Laukkanen, Anne-Maria, Horáček, Jaromír, and Liu, Dong

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:1f873fd1-ac6a-4c8f-9768-57ce2a57df44
uuid:1f873fd1-ac6a-4c8f-9768-57ce2a57df44

Subject:

biomechanics of voice, subglottal, oral and transglottal pressure, electroglottography, and phonation into tubes

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The study investigates differences between three most widely used methods in voice training and therapy: Phonation into a resonance tube with the outer end in the air or submerged 2-10 cm in water (‘water resistance therapy‘ with bubbling effect), and phonation into a very thin straw. One female speech trainer served as subejct. Acoustic and electroglottographic (EGG) signals, and both mean and dynamic air pressures in the mouth cavity were registered for repetitions of [pu:pu], and for phonation into the tubes, while the outer end was randomly shuttered in order to get an estimate of subglottic pressure. Soft and normal phonations were recorded. Phonation threshold decreased with tube in air, suggesting that increased input reactance assists small amplitude oscillation of the vocal folds. Oral pressure (Poral) increased with increasing impedance offered by the tube and straw, most when the tube was 10 cm in water. In most cases subglottic pressure (Psub) increased relatively more than Poral, so that tranglottic pressure (Ptrans) was higher in the exercises compared to vowel. Contact quotient (CQ) from EGG increased, which may be due to increased Ptrans. In tube 10 cm in water Ptrans decreased and CQ increased suggesting increased adduction as compensation. Exercises that increase oral eir-pressure offer a possibility to train flottal and respiratory adjustments under the influence of increased flow resistance which may prevent excessively strong vocal fold collisions. and Obsahuje seznam literatury

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

53-59

Source:

Engineering mechanics: international journal for theoretical and applied mechanics | 2014 Volume:21 | Number:1

Harvested from:

CDK

Metadata only:

false