Acoustic Measurements of the Glottic Source of Female Teachers With Dysphonia.

Autor: de Souza AJ; Department of Speech-Language Pathology and Audiology, Universidade Federal de Santa Maria/UFSM, Santa Maria, Rio Grande do Sul, Brazil., Gonçalves DDS; Department of Speech-Language Pathology and Audiology, Universidade Federal de Santa Maria/UFSM, Santa Maria, Rio Grande do Sul, Brazil., Bastilha GR; Department of Speech-Language Pathology and Audiology, Universidade Federal de Santa Maria/UFSM, Santa Maria, Rio Grande do Sul, Brazil. Electronic address: fonogabriele@gmail.com., Christmann MK; Department of Speech-Language Pathology and Audiology, Universidade do Vale do Itajaí (UNIVALI) - Itajaí SC e Associação Educacional Luterana Bom Jesus - IELUSC - Joinville Santa Catarina, Brazil., Scapini F; Department of Medicine, Universidade Federal de Santa Maria/UFSM, Santa Maria, Rio Grande do Sul, Brazil., Cielo CA; Department of Speech-Language Pathology and Audiology, Universidade Federal de Santa Maria/UFSM, Santa Maria, Rio Grande do Sul, Brazil.
Jazyk: angličtina
Zdroj: Journal of voice : official journal of the Voice Foundation [J Voice] 2020 Nov; Vol. 34 (6), pp. 838-846. Date of Electronic Publication: 2019 Jun 04.
DOI: 10.1016/j.jvoice.2019.05.009
Abstrakt: Objective: To verify the acoustic measurements of glottic source of dysphonic teachers of a medium-sized municipality of interior of the state.
Methods: Retrospective, cross-sectional, and quantitative study, with a composite sample of 34 dysphonic teachers, of which 21 teachers without laryngeal affections and 13 with laryngeal affections, mean age 39.1 years old and 39.5 years old, respectively. Glottic source acoustic analysis was performed with the Multi-Dimensional Voice Program Advanced. The data were analyzed statistically to verify the significance of each acoustic measure between the groups (with laryngeal affection, without laryngeal affection, and total) and in relation to the normality proposed by the software.
Results: In the three conditions (groups with and without affection and total) the means were statistically below normality in the measurements of maximum and minimum fundamental frequency. In the group without affection, frequency, and noise measurements presented above normality. In both groups, measurements of frequency, noise, and subharmonic segments were above normal, and number of voice breaks below normal.
Conclusion: Acoustic parameters outside the normal pattern showed an aperiodic vocal production, with presence of noise and instability in the vocal signal, in dysphonic teachers with or without alteration at the laryngeal level.
(Copyright © 2019 The Voice Foundation. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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