Navegando por Palavras-chave "percepção da fala"
Agora exibindo 1 - 3 de 3
Resultados por página
Opções de Ordenação
- ItemSomente MetadadadosDesenvolvimento de um sistema computacional para aplicação do teste distinctive feature difference (dfd) em português brasileiro(Universidade Federal de São Paulo (UNIFESP), 2015-01-31) Takagaki, Luiz Koiti [UNIFESP]; Iorio, Maria Cecilia Martinelli Iorio [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)There are several tests to assess the results of the hearing aid fitting process. Among these tests, there are speech recognition tests, which evaluates response of hearing impaired for essential stimulus of human communication. Language differences impose severe restrictions on use of tests developed and made available outside the Brazilian territory. Tests using nonsense syllables, for example, the Distinctive Feature Difference Test (DFD test; Feeney and Franks, 1982), are tools whose objective is to evaluate the detection of different consonants in the middle of vowel stimuli, providing an alternative and / or complement to the monosyllable recognition test. The DFD test, in its initial proposal, used a set of 13 consonants in vowel / consonant / vowel (VCV) format (e.g. aca, aza, afa). The patient's task is to identify the words issued. The score is performed in terms of overall accuracy and supplemented by information on the confusion pattern between the consonant sounds The goal of this research was to develop a computational tool for the application of DFD test in Brazilian Portuguese. The developed material uses the recording of syllables in Portuguese in VCV format. There are 19 consonants interspersed by ?a? vowel. The acoustic tuning of the material was carried out according to international standards and use of this test in Brazil, using a standardized computer system that performs the test end to end, allowing superior performance in quality and runtime. The computational system DFD test was developed to automate the application of this test and allow automatic tabulation of collected data. The purpose of this tool to improve application speed and increase the reliability of the test.
- ItemAcesso aberto (Open Access)Próteses auditivas e tempos de recuperação: estudo segundo status cognitivo(Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial, 2013-04-01) Ghiringhelli, Rosângela [UNIFESP]; Iorio, Maria Cecilia Martinelli [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Studies have shown that elderly people with cognitive impairments benefit more from hearing aids with slower recovery times. OBJECTIVE: To study participation constraints and speech recognition in noise of elderly subjects equipped with hearing aids of different recovery times according to cognitive impairment status. METHOD: Fifty subjects aged between 60 and 80 years were followed for four months. They were divided at first in groups of individuals without (G1; n = 24) and with (G2; n = 26) cognitive impairment based on results of the Alzheimer's Disease Assessment Scale -Cognitive Sub-scale test. Half the members of each group received hearing aids with faster recovery times and half got slower recovery aids, thus forming four groups: two without cognitive impairment (faster recovery - G1F; slower recovery - G1S) and two suspected for cognitive impairment (faster recovery - G2F; slower recovery - G2S). All subjects were interviewed, submitted to basic audiological assessment, asked to answer the Hearing Handicap Inventory for the Elderly questionnaire, and tested for speech recognition in noise. ANOVA, McNemar's test, and the Chi-square test were applied. The significance level was set at 5%. RESULTS: There was significant improvement in participation constraint and speech recognition in noise with hearing aids alone. Sub-group G2F needed more favorable signal-to-noise ratios to recognize 50% of the speech in noise. CONCLUSION: Participation constraint and speech recognition in noise were improved regardless of recovery times or cognitive impairment status.
- ItemAcesso aberto (Open Access)Reconhecimento de fala de indivíduos normo-ouvintes com zumbido e hiperacusia(Fundação Otorrinolaringologia, 2011-03-01) Hennig, Tais Regina; Costa, Maristela Julio [UNIFESP]; Urnau, Daila; Becker, Karine Thaís; Schuster, Larissa Cristina; Universidade Federal de São Paulo (UNIFESP); Universidade Federal de Santa Maria Departamento de FonoaudiologiaINTRODUCTION: Tinnitus and hyperacusis are increasingly frequent audiological symptoms that may occur in the absence of the hearing involvement, but it does not offer a lower impact or bothering to the affected individuals. The Medial Olivocochlear System helps in the speech recognition in noise and may be connected to the presence of tinnitus and hyperacusis. OBJECTIVE: To evaluate the speech recognition of normal-hearing individual with and without complaints of tinnitus and hyperacusis, and to compare their results. METHOD: Descriptive, prospective and cross-study in which 19 normal-hearing individuals were evaluated with complaint of tinnitus and hyperacusis of the Study Group (SG), and 23 normal-hearing individuals without audiological complaints of the Control Group (CG). The individuals of both groups were submitted to the test List of Sentences in Portuguese, prepared by Costa (1998) to determine the Sentences Recognition Threshold in Silence (LRSS) and the signal to noise ratio (S/N). The SG also answered the Tinnitus Handicap Inventory for tinnitus analysis, and to characterize hyperacusis the discomfort thresholds were set. RESULTS: The CG and SG presented with average LRSS and S/N ratio of 7.34 dB NA and -6.77 dB, and of 7.20 dB NA and -4.89 dB, respectively. CONCLUSION: The normal-hearing individuals with or without audiological complaints of tinnitus and hyperacusis had a similar performance in the speech recognition in silence, which was not the case when evaluated in the presence of competitive noise, since the SG had a lower performance in this communication scenario, with a statistically significant difference.