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Spontaneous speech of oral deaf children using multiparametric acoustic analysis: Fundamental frequency derivatives

Fala espontânea de crianças surdas oralizadas com medidas acústicas multiparamétricas: derivadas de frequência fundamental

Aline Neves Pessoa Almeida; Daniela Gil; Carolina Giménez de Almeida; Marisa Frasson de Azevedo

http://dx.doi.org/10.1590/1982-0216/20262827725 Revista CEFAC, vol.28, n2, e7725, 2026
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Abstract

Purpose: to determine measures derived from the fundamental frequency (f₀) of spontaneous speech of oral deaf children, described according to age, sex, and the type of hearing technology they used.

Methods: a prospective cross-sectional study with 25 oral deaf children, aged 7 months to 10 years and 10 months, with severe to profound sensorineural hearing loss. Acoustic analysis was performed using a multiparametric measurement script: measures derived from f₀: mean, median, standard deviation (SD), minimum, and maximum values. Descriptive statistical procedures with the Mann-Whitney test were applied to observe effects per group of sex, age, and type of hearing technology. Statistical significance was set at p ≤ 0.05.

Results: f₀ values in Hertz (mean; median; SD; minimum; maximum) were as follows: 7m-3y11m (345.4; 363; 61.17; 267.00; 424.20); 4y-5y11m (328.2; 326.4; 32.77; 285; 385.80); 6y-7y11m (289.2; 270.6; 47.25; 257.4; 358.2); 8y-10y10m (270.6; 276.6; 14.32; 245.6; 280.2). There was no significant difference between sex and the type of technology. Values derived from f₀ differed significantly between age groups; values decreased as age increased.

Conclusion: values derived from f₀ of spontaneous speech (mean, median, SD, minimum, and maximum) differed statistically between age groups, decreasing with increasing age.

Keywords

Speech Acoustics; Speech Therapy; Child; Hearing Loss; Hearing Aids; Cochlear Implantation

Resumo

Objetivo: determinar medidas derivadas da frequência fundamental (f₀) de fala espontânea de crianças surdas oralizadas, descritas conforme idade, sexo e tipo de tecnologia auditiva utilizada.

Métodos: estudo transversal e prospectivo, com 25 crianças surdas oralizadas, entre 7 meses e 10 anos e 10 meses com perda auditiva neurossensorial de grau severo a profundo. A análise acústica foi realizada por meio de um script de medidas multiparamétricas: medidas derivadas de f₀ (média e mediana, desvio padrão-DP, valor mínimo e máximo - Vmín e Vmáx). Procedimentos estatísticos descritivos foram aplicados, com teste de Mann-Whitney para observar efeitos conforme agrupamentos: sexo, idade e tipos de tecnologias auditivas. O valor de significância estatística adotado foi de p ≤ 0,05.

Resultados: valores de f₀ em Hertz (média / mediana/ desvio padrão - DP/ Vmín e Vmáx) foram: 7m-3a11m (345,4 / 363 / 61,17 / 267,00-424,20), 4a-5a11m (328,2 / 326,4 / 32,77 / 285-385,80), 6a-7a11m (289,2 / 270,6 / 47,25 / 257,4-358,2), 8a-10a10m (270,6 / 276,6 / 14,32 / 245,6-280,2). Não houve diferença significativa entre os sexos e os tipos de tecnologia utilizados. Houve diferença significativa nos valores derivados de f₀ quando comparados entre faixas etárias, com redução dos valores com aumento da idade.

Conclusão: valores derivados de f₀ de fala espontânea diferiram com diferença estatística entre faixas etárias, houve diminuição dos valores (média / mediana/ desvio padrão-DP/ Vmín e Vmáx) com o aumento da idade.

Palavras-chave

Acústica da Fala; Fonoterapia; Criança; Perda Auditiva; Auxiliares de Audição; Implante Coclear

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Submetido em:
05/08/2025

Aceito em:
03/11/2025

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