Perceptual and acoustical analysis in women. with vocal node / AnÃlise perceptivo-auditiva e acÃstica em mulheres com nÃdulos vocais

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

This work ayms to study the perceptual evaluation and the acoustic analysis in 25 women. In this population, 20 women had vocal nodule and 5 had normal voices and larynx. It was defined the vocal node as the interest pathology, which is a reaction to the excessive use of the voice, that induces to the constant vocal folds movement. It was used VoxMetria software to analise the acoustic data. This research was approved by Hospital Erasto Gaertner Research and Ethics Commission, in Curitiba/ ParanÃ. The selected women were submitted to 3 evaluations: laryngological, perceptual and acoustic. In the larynx exam it was used the âvideolaringoestroboscopiaâ. In the perceptual evaluation it was used the RASAT scale. The basic frequency parameters (f0), the noise measure GNE (glottal to noise excitation ratio) and the vocal spectrogram, to the acoustic analysis, where it was used the supported vowel [Ã]. The results showed that the basic frequency values were more thick in the group with vocal nodule and the noise measure GNE wasnât sensitive in both group analysis and showed normal results. The perceptual evaluation and the vocal spectrogram revealed significant differences between the two groups. The vocal spectrogram were really sensitive when compared to the perceptual evaluation

ASSUNTO(S)

nÃdulo vocal anÃlise acÃstica spectrogram vocal nodule engenharia biomedica acoustical analysis espectrograma engenharia biomÃdica biomedical engineering

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