Detalhes bibliográficos
| Ano de defesa: |
2012 |
| Autor(a) principal: |
Pereira, Lílian Cristina Kuhn
 |
| Orientador(a): |
Madureira, Sandra |
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Tese
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Pontifícia Universidade Católica de São Paulo
|
| Programa de Pós-Graduação: |
Programa de Estudos Pós-Graduados em Linguística Aplicada e Estudos da Linguagem
|
| Departamento: |
Lingüística
|
| País: |
BR
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
https://tede2.pucsp.br/handle/handle/13603
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Resumo: |
The link between speech perception and production is poorly considered in studies of hearing impairment in Brazil. This study follows a line of investigation that considers the relationship between speech production and perception in different contexts of speech in the same say as other studies previoulsly performed, which have investigated consonant and vowel sounds of Brazilian Portuguese (BP) based on the theoretical assumptions of Acoustic Theory of Speech Production (Fant, 1960) and the Articulatory Phonology (Browman & Goldstein, 1986, 1990, 1992). This particular research aims to investigate the main acoustic parameters involved in identifying the voicing of plosives (/p/, /b/, /t/, /d/, /k/e /g/) of Brazilian Portuguese, and the consequences of hearing impairment for speech production and perception of this class of sounds. For that purpose, this study involves an acoustic analysis of speech production, from one subject with no hearing impairment (reference S1) and two hearing-impaired subjects (S2 e S3) with moderate and profound hearing loss. The corpus consists in of six paroxytone disyllable words, to which the stressed consonant is represented by one of the PB plosives: [p], [b], [t]. [d], [k] and [g], within the words "pata", "gata", "tata", "data", "cata" and "gata", inserted in the sentence-vehicle "say _________ (keyword) softly ". The parameters analyzed are: duration measures of (1) sentence, key-words, vowel-vowel units (or GIPC); (2) vowels [A1], [a2] and [A3]; (3) plosive consonants in accent position and non-accent position; (4) consonant elements: voiced bar (MBS), silence (IBS) e burst (plosão: is burst.). And also, (5) fundamental frequency (f0) and (6) F1, F2 e F3 of vowels [A1], [a2] and [A3], formants transition of F1, F2 e F3 of [a2]. The speech perception experiment was constituted by two perception tests from S2 and S3 speech productions with thirty normal hearing judges with no hearing impairment. The S1 speech production was submitted to four types of manipulation for the duration parameter. And then, it was submitted to a perception test for the same group of judges. The results showed that there is a close connection between the altered parameters and progression of hearing loss. The subject S2 - moderate degree showed very similar patterns with S1. It was noted that the Subject 3 (profound degree) had all the analyzed parameters altered. The speech perception tests results had the same behavior: most of answers of S4 samples were different form the words asked to be produced. Otherwise, for S2, most of responses were correct. The pilot study of manipulation speech could prove the relevance of the duration parameter for identification of both points of articulation and/or voicing parameter. With this study, it was concluded that the instances of production and speech perception are intrinsically linked |
