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  • Title: Vowel production in hearing impaired children: A comparison between normal-hearing, hearing-aided and cochlear-implanted children.
    Author: Núñez-Batalla F, Vasile G, Cartón-Corona N, Pedregal-Mallo D, Menéndez de Castro M, Guntín García M, Gómez-Martínez J, Carro Fernández P, Llorente-Pendás JL.
    Journal: Acta Otorrinolaringol Esp (Engl Ed); 2019; 70(5):251-257. PubMed ID: 30086890.
    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 programme.
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