Auditory and visual perceptual training of acoustic spectrography of deviated voices performed in inexperienced evaluators

• Grant number: 22/01977-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2022
• End date: December 31, 2022
• Field of knowledge: Health Sciences - Speech Therapy
• Principal Investigator: Rosiane Kimiko Yamasaki Odagima
• Grantee: Luiza Medolago de Medeiros Cardoso
• Host Institution: Escola Paulista de Medicina (EPM). Universidade Federal de São Paulo (UNIFESP). Campus São Paulo. São Paulo , SP, Brazil

Abstract

Purpose: 1. To verify the effectiveness of auditory and visual perceptual training performed in students of speech-language pathology in the analysis of spectrographic parameters of the voice of vocally healthy and dysphoric individuals; 2. Infer about the vocal deviations from the interpretation of the spectrographic track and the respective audio. Method: A prospective and longitudinal study. Will participate in the survey of 20 students of the graduation, age range 18 to 40 years, of both sexes, without complaint of hearing or visual problems. 6 meetings will be organized in the online mode: 1st Meeting - participants will receive information about the acoustic spectrography of the voice, they will have access to anchor spectrographic boards and their respective audio, and they will make the perceptive-visual analysis of 10 acoustic spectrography and the auditory and visual perceptual evaluation of the vocal deviations of the respective voices (roughness, breathiness, strain, and instability); 2nd to the 5th Meeting - auditory and visual perceptual training carried out with the use of acoustic spectrography of the voice, of vocally healthy and dysphoric individuals, and of their respective audio; 6th Meeting - perceptive-visual analysis of the same 10 spectrographic boards used in the first meeting. In addition, participants will infer the vocal deviations of the 10 boards, from the spectrographic stroke and the audio. During the training, acoustic parameters related to energy distribution, system instability, and asynchrony of glottic cycles will be explored. Each meeting will last 1 hour. The normal and dysphonic voices will be extracted from a bank of voices and the speech task will be the sustained vowel "é" In order to obtain the spectrographic boards, the Program FonoView will be used, version 4.5, CTS Informatica. Three speech-language pathologists experts in voice will select and analyze the 10 spectrographic boards and their respective voices. The auditory and visual perceptual evaluation of the experienced evaluators will be used as a reference for the analysis of the accuracy of the responses of the participants. Form of analysis of the results: The accuracy of response, pre, and post-intervention, will be verified by comparing the auditory and visual perceptual analyses performed by the participants with those of the experienced evaluators; intra and inter-subject reliability will also be verified.(AU)