Phonation into a glass tube immerse in water: analysis perceptiveauditory vocal and videolaryngostroboscopy in women without laryngeal disorders, complaints or vocal alterations

ABSTRACT:

Purpose:

to check and correlate measures of vocal acoustic of the glottal source and laryngeal characteristics of women without laryngeal disorders and without vocal complaints, after the phonation in a glass tube immersed in water.

Methods:

twenty-four women, between 18 and 40 years, were available and allocated in two groups, being 12 in the study group and 12 in the control group. Were performed collect the vowel /a:/ and videolaryngostroboscopy before and after the execution of technique, in the study group, and before and after a period of silence in the control. Was performed an analysis vocal acoustics and hearing perceptual and statistical analysis with Wilcoxon, Chi-square and Spearman (p<0,05).

Results:

SG: improvement of the smoothed pitch perturbation quotient, voice turbulence index, Shimmer percentage and Shimmer in dB; improvement of breathiness in RASATI; in the videolaryngostroboscopy, the laryngeal vestibule constriction did not change significantly.

CONCLUSION:

the technique phonation in a glass tube immersed in water reduced of vibration glottal aperiodicity and the noise, with increased energy harmonic and consequent improvement of the glottal signal. In videolaryngostroboscopy, the laryngeal vestibule constriction did not change significantly, this suggests that the technique does not cause laryngeal hypertension.

KEYWORDS:
Voice; Rehabilitation; Phonation; Speech Acoustics