Qualidade vocal: análise acústica de ajustes fonatórios e de tensão laríngea

• Autor(a) principal: Queiroz, Renata de Moraes
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da PUC_SP
• Texto Completo: https://tede2.pucsp.br/handle/handle/13592
• topic: Qualidade de voz; Percepção auditiva; Acústica da fala; Medida de produção da fala; Fonética; Voice quality; Auditory perception; Speech acoustics; Speech production measure; Phonetics; CNPQ::LINGUISTICA, LETRAS E ARTES::LINGUISTICA::LINGUISTICA APLICADA

Each speaker carries a set of specific speaking signal, which can be detailed by means of description of vocal quality. Changes occurred in the dynamic of vocal tract structures influence in vocal quality, being liable of evaluation by means of script known as Vocal Profile Analysis Scheme (VPAS). Aim: Describing acoustic correlation of vocal quality adjustment from phonatory sphere and frequent tension in VPAS guide. Methodology: 29 speakers were selected, divided in two groups of gender, being one group of 11 subjects of masculine gender and another group of 18 subjects of feminine gender. The data gathering procedure was conducted by means of sample recordings in the audio format of corpus involving semi-spontaneous issuance excerpts and reading of 3 sentences (five repetitions) formulated for vocal quality evaluation. The audio samples were submitted to auditory perceptual analysis (VPAS guide) and (acoustic automatic measures extracted from application of Script Expression EvaluatorBySG and different measures of intensity between the two first harmonics: H1-H2). The results were statistically treated via multivariated analysis, in this way seeking the correspondence between perception and acoustic in the masculine and feminine gender speaking groups. Results: The feminine gender speaking group revealed predominance in laryngeal hyperfunction adjustments, besides the combinations of air escape and harsh voice. In the masculine group, there were hypofunction laryngeal associations, modal settings crackling and breathy voice. From the acoustic point of view, the measures related to f0 and its first derivative differed neutral adjustments and not neutral phonatory sphere, while spectral decline measures and the long term spectral mixed laryngeal tension adjustments and the high laryngeal position. The H1-H2 measures where associated to differentiation of laryngeal tension adjustments (hyperfunction and hypofunction) and phonatory adjustments relative to aperiodicity of vocal signal, which were distinguished by groups of masculine and feminine speaking gender. Conclusion: Measures related to f0, first derived to f0, spectral decline, long term spectral and differences of intensity between harmonics revealed the condition of distinguished neutral adjustment groups and not of vocal quality neutrals from the point of view of phonatory and tension