Vocal characteristics during child development: perceptual-auditory and acoustic data.
| Autor: | Lopes LW; Department of Speech and Language Pathology, Federal University of Paraíba, João Pessoa, Brazil., Lima IL, Azevedo EH, de Lima-Silva MF, Cavalcante DP, de Almeida LN, de Almeida AA |
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| Jazyk: | angličtina |
| Zdroj: | Folia phoniatrica et logopaedica : official organ of the International Association of Logopedics and Phoniatrics (IALP) [Folia Phoniatr Logop] 2013; Vol. 65 (3), pp. 143-7. Date of Electronic Publication: 2013 Nov 26. |
| DOI: | 10.1159/000355913 |
| Abstrakt: | Objective: To analyze perceptual-auditory and acoustic characteristics of children's voices of different age ranges. Patients and Methods: Ninety-three 3- to 10-year-old children grouped from 3 to 5, 6 to 7, and 8 to 10 years served as participants. The severity of vocal deviation and the parameters of roughness, breathiness, strain, and instability were assessed using a visual analog scale. We calculated the mean and standard deviation of fundamental frequency (F0), jitter, shimmer, and glottal-to-noise excitation ratio for the sustained vowel, and the mean of F0 variability for connected speech. Results: The most affected voices were in the age range 8-10 years, and only the phonation tension level was reduced as a result of aging. There were significant differences between children aged 3-5 years and the other age ranges for F0 mean for sustained vowels and F0 variability. Conclusion: Children aged 8-10 years had the highest severity of vocal deviation. There was a significant reduction of phonation tension and measure of F0, jitter, and shimmer after the age of 5 years. (© 2013 S. Karger AG, Basel.) |
| Databáze: | MEDLINE |
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