Objective: to analyze and to correlate the immediate effects of voiced high-frequency oscillation (VHFO) in acoustic measures and voice quality in healthy and dysphonic individuals. Methodology: 30 healthy and 30 dysphonic individuals of both gender aged between 18 to 45 years old will participate of this study. A voice database (vowel /a/ and counting) will be used to perform acoustic analysis (Cepstral Peak Prominence Smoothed, alpha ratio, and difference L1-L0) and perceptual analysis (general grade of voice, roughness, and breathness voice) using the analogic visual scale, by means of the vowel /a/ recording and number counting one to ten. The data will be analyzed statistically by parametric or non-parametric tests, in order to compare it before and after the application of the VHFO technique and correlate the acoustic parameters with the perceptual analysis.
News published in Agência FAPESP Newsletter about the scholarship: