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Diagrama de desvio fonatório e análise perceptivo-auditiva pré e pós-terapia vocal

Phonatory Deviation Diagram pre and post vocal rehabilitation

Resumos

OBJETIVO: Verificar se o Diagrama de Desvio Fonatório (DDF) demonstra a mudança vocal obtida por meio da terapia fonoaudiológica e se acompanha as alterações da análise perceptivo-auditiva. MÉTODOS: Foram analisadas amostras da vogal sustentada /ε/ de 34 indivíduos, com diversos tipos de disfonia, nos momentos pré e pós-terapia. As vozes foram submetidas à análise acústica pelo DDF e perceptivo-auditiva pela escala analógica visual (EAV) de 100 pontos. No DDF, as vozes foram classificadas quanto à densidade (concentrada ou ampliada), à forma (horizontal, vertical ou circular) e à localização nos quadrantes do diagrama (inferior esquerdo = 1; inferior direito = 2; superior direito = 3 e superior esquerdo = 4). Procedeu-se à análise estatística dos parâmetros acústicos, da distribuição das amostras e da correlação entre a análise acústica e a auditiva, nos momentos pré e pós-terapia. RESULTADOS: Os dados acústicos mostraram melhora na situação pós-terapia. A densidade do DDF não se diferenciou nos dois momentos. Já as formas diferenciaram-se nos dois momentos (p=0,031), sendo que a vertical caracterizou as amostras no momento pré-terapia (12; 35,29%), e a circular (7; 20,59%) no momento pós-terapia. No momento pré-terapia, as amostras estavam distribuídas em três dos quatro quadrantes; no pós-terapia, 90% localizaram-se no quadrante 1 (área de normalidade). A média da avaliação auditiva passou de grau moderado a leve-moderado (p<0,001). Houve diferença entre a localização no quadrante e a avaliação auditiva (p<0,001). CONCLUSÃO: O DDF é útil para identificar mudanças em relação à terapia vocal, correlacionando-se à avaliação perceptivo-auditiva.

Voz; Acústica da fala; Qualidade da voz; Percepção auditiva; Distúrbio da voz


OBJECTIVE: Verify whether PDD reflects vocal changes obtained by vocal rehabilitation and whether it reflects the changes in perceptual analysis. METHODS: Samples of the sustained vowel / ε /, pre and post-therapy, from 34 individuals with different dysphonia diagnosis were collected. The voices were acoustically analyzed by the PDD and an auditory perceptual analysis was performed using a visual analog scale (VAS) of 100 points. The acoustic samples were classified according to PDD density (concentrate or spread), shape (horizontal, vertical or circular) and position within the quadrants of the graph (lower left = 1, = lower right = 2, upper right = 3 and upper left = 4). Statistical analysis of acoustic parameters, distribution of samples and correlation between acoustic analysis and auditory perceptual analysis were performed. RESULTS: Acoustic data showed improvement after therapy. Density did not differ in the two moments, while shape showed differences pre and post-therapy (p = 0.031). The vertical form characterized pre-therapy samples (12, 35.29%), and the circular form was associated to post-therapy samples (7, 20.59%). In pre-treatment condition, samples were distributed in three of the four quadrants, while in post-therapy, 90% were located in the first quadrant (normality area). The average perceptual deviation reduced from moderate to mild-moderate (p <0.001). There is a relationship between quadrant location and perceptual analysis (p <0.001). CONCLUSION: PDD is useful to identify changes acquired with voice therapy and correlates with perceptual voice analysis.

Voice; Acoustic; Voice quality; Auditory perception; Voice disorders


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Datas de Publicação

  • Publicação nesta coleção
    25 Jun 2015
  • Data do Fascículo
    2013

Histórico

  • Recebido
    24 Dez 2010
  • Aceito
    22 Set 2011
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