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Vol. 70. Issue 5.
Pages 251-257 (September - October 2019)
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Vol. 70. Issue 5.
Pages 251-257 (September - October 2019)
Original article
Vowel Production in Hearing Impaired Children: A Comparison Between Normal-hearing, Hearing-aided and Cochlear-implanted Children
Comparación de la producción vocal en niños con hipoacusia prelocutiva con adaptación audioprotésica e implante coclear con normooyentes
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Faustino Núñez-Batallaa,
Corresponding author
fjnunezb@gmail.com

Corresponding author.
, Gabriela Vasileb, Noelia Cartón-Coronab, Daniel Pedregal-Malloa, Marta Menéndez de Castroa, Maite Guntín Garcíac, Justo Gómez-Martíneza, Pilar Carro Fernándeza, Jose Luis Llorente-Pendása
a Servicio de Otorrinolaringología, Hospital Universitario Central de Asturias, Oviedo, Spain
b Logopedia, Universidad de Oviedo, Oviedo, Spain
c IATYS, Fundación Vinjoy, Oviedo, Spain
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Tables (3)
Table 1. Demographic Information of the Participants.
Table 2. Results of the Analysis of the Formant Frequencies of the Vowels in the 3 Groups of Individuals Studied, as well as the Statistically Significant Values.
Table 3. Results of the Area of the Vowel Triangles of the 3 Groups of Subjects Studied and Their Euclidean Distances.
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Abstract
Introduction and objectives

Inadequate auditory feedback in prelingually deaf children alters the articulation of consonants and vowels.

The purpose of this investigation was to compare vowel production in Spanish-speaking deaf children with cochlear implantation, and with hearing-aids with normal-hearing children by means of acoustic analysis of formant frequencies and vowel space.

Methods

A total of 56 prelingually deaf children (25 with cochlear implants and 31 wearing hearing-aids) and 47 normal-hearing children participated. The first 2 formants (F1 and F2) of the five Spanish vowels were measured using Praat software. One-way analysis of variance (ANOVA) and post hoc Scheffé test were applied to analyze the differences between the 3 groups. The surface area of the vowel space was also calculated.

Results

The mean value of F1 in all vowels was not significantly different between the 3 groups. For vowels /i/, /o/ and /u/, the mean value of F2 was significantly different between the 2 groups of deaf children and their normal-hearing peers.

Conclusion

Both prelingually hearing-impaired groups tended toward subtle deviations in the articulation of vowels that could be analyzed using an objective acoustic analysis program.

Keywords:
Hearing impairment
Vowel production
Vocal acoustic analysis
Resumen
Introducción y objetivos

La inadecuada retroalimentación auditiva en los niños con hipoacusia prelocutiva altera la articulación de consonantes y vocales.

El propósito de esta investigación es comparar la producción de vocales en niños hipoacúsicos hispanohablantes con implante coclear o adaptación audioprotésica con niños normooyentes por medio del análisis acústico de las frecuencias formánticas y el espacio vocal.

Método

Un total de 56 niños con hipoacusia prelocutiva (25 con implante coclear y 31 con audífonos) y 47 niños normooyentes participaron en el estudio. Los 2 primeros formantes (F1 y F2) de las 5 vocales del idioma español se midieron utilizando el programa Praat. Para analizar las diferencias entre los 3 grupos se aplicó el método ANOVA de análisis de la varianza y el test de Scheffé. También se calculó el área del espacio vocal.

Resultados

El valor medio del F1 en todas las vocales no mostró diferencias significativas en los 3 grupos de niños. Para las vocales /i/, /o/ y /u/ el valor medio del F2 fue significativamente diferente entre los 2 grupos de niños hipoacúsicos y el grupo de niños normooyentes.

Conclusión

Ambos grupos de niños con hipoacusia prelocutiva tienden a presentar sutiles desviaciones en la articulación de las vocales que pueden ser analizadas mediante un programa de análisis acústico.

Palabras clave:
Hipoacusia
Producción vocal
Análisis acústico vocal

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