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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Diagrama de desvio fonatório na clínica vocal / Hoarseness diagram in the voice clinic

Madazio, Glaucya [UNIFESP] 18 February 2009 (has links) (PDF)
Made available in DSpace on 2015-07-22T20:49:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-02-18 / Objetivo:Identificar quais as características discriminatórias do diagrama de desvio fonatório em vozes predominantemente adaptadas, rugosas,soprosas e tensas,em indivíduos adultos.Método:Foram analisadas 196 amostras vocais da vogal /ε/ sustentada de indivíduos adultos, divididas em dois grupos, 163 com alteração vocal e 33 sem alteração vocal.As amostras foram submetidas a dois tipos de avaliação,a perceptivo-auditiva e a acústica.A avaliação perceptivo-auditiva concentrou-se na identificação do tipo de predominância da qualidade vocal–adaptada,rugosa,soprosa ou tensa,e no grau de alteração da qualidade alterada,por meio da escala analógico-visual e sua correspondência numérica.A análise acústica do sinal vocal foi realizada no programa VoxMetria(CTS Informática)e abrangeu a configuração da distribuição das amostras vocais no diagrama de desvio fonatório quanto à área de normalidade,densidade, forma e localização nos quadrantes,e a extração de medidas acústicas como frequência fundamental,jitter,shimmer,correlação e GNE.Resultados: Houve diferença significante na localização das amostras vocais em relação à área de normalidade do diagrama, sendo que 100 por cento(33)das vozes adaptadas encontraram-se dentro da área e 69,3 por cento(113)das alteradas fora dela(p<0,001).Vozes adaptadas apresentaram densidade concentrada(78,8 por cento, 26)com diferença significante das vozes alteradas (p<0,001),que apresentaram densidade ampliada(56,4 por cento, 92).Em relação ao tipo de voz,todas as vozes adaptadas localizaram-se no quadrante inferior esquerdo, 45 por cento(27)das rugosas no quadrante inferior direito, 52,6 por cento(30)das soprosas no superior direito e 54,3 por cento(25)das tensas no inferior esquerdo.Quanto ao grau de alteração vocal, das 16 vozes alteradas avaliadas com grau 1, 93,8 por cento(15)localizaram-se no quadrante inferior esquerdo.As vozes classificadas com grau 3 de alteração dividiram-se entre os quadrantes inferior e superior direitos.Dos desvios vocais intensos,80 por cento(8)localizaram-se no quadrante superior direito.O quadrante inferior esquerdo concentrou vozes avaliadas na escala analógico-visual até 35,5mm(grau 1)e algumas de 35,5 a 50,5mm(grau 2).As vozes com grau 3 de alteração distribuíram-se nos quadrantes inferior direito,superior esquerdo e superior direito,sendo que neste localizaram-se as vozes com pior grau de alteração.Os valores de jitter e shimmer diferenciaram as vozes tensas das rugosas(p<0,021 e p=0,0032; respectivamente)e das soprosas (p=0,021 e p=0,005,respectivamente).O GNE também diferenciou as vozes tensas das rugosas(p=0,003)e das soprosas(p<0,002),além de diferenciar vozes rugosas e soprosas(p<0,001).A correlação entre F0 e os demais parâmetros acústicos não foi significante e a qualidade da correlação foi péssima:jitter(p=0,257; -8,9 por cento),shimmer (p=0,158; -11,2 por cento),correlação(p=0,285; 8,4 por cento) e GNE(p=0,790; -2,1 por cento).Conclusões:O diagrama de desvio fonatório diferenciou vozes adaptadas e vozes alteradas.Vozes adaptadas localizaram-se dentro da área de normalidade e,a maioria das vozes alteradas, fora.Não houve relação entre tipo de voz, densidade e forma no diagrama.A distribuição das vozes nos quadrantes relacionou-se com o tipo e o grau da alteração da voz.O GNE foi o único parâmetro acústico capaz de diferenciar os três tipos de vozes alteradas. / Purpose: To identify which characteristics discriminates the hoarseness diagram of adult voices that are predominantly adapted, rough, breathy and strained. Method: 196 adult voice samples of the sustained vowel “ae” were analyzed. They were distributed into two groups, 163 with vocal deviation and 33 with healthy voices. Voice samples were submitted to two types of analyses: acoustic and auditory perceptual. The perceptual analyses focused on the identification of the vocal quality predominance – adapted, rough, breathy and strained and also in the degree of deviation, by using a visual analogue scale and its numeric correspondence. The acoustic analyses was performed by means of the VoxMetria software (CTS Informatica) and consisted of assessing the configuration of vocal sample distribution in the hoarseness diagram according to normality area, density, shape and location in the quadrants, and the extraction of fundamental frequency, jitter, shimmer, correlation and GNE. Results: There was a significant difference in the position of the voice samples in relation to the normality area of the diagram, meaning that 100% (33) of the adapted voices were located inside this area and 69.3% (113) of the deviated voices were outside it (p<0.001). Adapted voices presented concentrated density (78.8%, 26), which were statistically different from the deviated voices (56.4%, 92) that presented spread density (56.4%, 92). As far as voice type is concerned, all adapted voices were located at the inferior left quadrant, 45% (27) of the rough voices were at the inferior right, 52.6% (30) of the breathy voices were at the superior right and 54.3% (25) of the strained were at the inferior left. Concerning the degree of severity of vocal deviation, 93.8% of the 16 deviated voices evaluated as having a 1 degree of deviation were located at the inferior and superior right quadrants. In the other hand, 80 % (8) of the voice with a severe degree of deviation were located in the superior right quadrant. The inferior left quadrant concentrated the voices evaluated by the visual analogue scale up to 35.5mm (degree 1) and some from 35.5 to 50.5mm (degree 2). Voices with 3 degree of deviation were located in the inferior right Abstract and both superior left and right quadrants. The voices with the worse degree of deviation were located at the superior right quadrant. Jitter and shimmer differed the strained voices from the rough voices (p<0.021 e p=0.0032 respectively) and from the breathy voices (p=0.021 e p=0.005, respectively). The GNE did also differ the strained voices from the rough voices (p=0.003) and from the breathy voices (p<0.002).It also differentiated the rough from the breathy voices (p<0.001). The correlation between F0 and the other acoustic parameters was not significant and the quality of correlation was very poor: jitter (p=0.257; -8.9%), shimmer (p=0.158; -11.2%), correlation (p=0.285; 8.4%) and GNE (p=0.790; -2.1%). Conclusions: The hoarseness diagram differentiated the adapted from the deviated voices. Adapted voices were located in the normality area, and the majority of the deviated voices were outside it. There was not a relationship between type of voice, density and shape of configuration of vocal sample distribution in the diagram. The distribution of voices in the quadrants related to the type and degree of severity of voice deviation. GNE was the only acoustic parameter able to differ from the three types of deviated voices. / TEDE / BV UNIFESP: Teses e dissertações
2

The Lombard Effect on Speech Clarity in Patients with Parkinson Disease

AL-FWARESS, FIRAS SALER DAHER 22 August 2008 (has links)
No description available.

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