病的音声の聴覚的ならびに音響学的分類に関する研究

概要

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Analysis of pathological voices seems to be a useful method for the differential diagnosis of various laryngeal diseases. Possible analytic methods are twofold: one is perceptive and the other is acoustical.On 30 voice samples from patients with laryngeal cancers (10), unilateral recurrent nerve paralyses (10), and vocal polyps (10), the author carried out two analytic studies, separately, and compared both results.For the perceptive study, the semantic differential technique was employed as a psychometic procedure with the use of ten pair of polar-opposite adjectives, while for the acoustical study 12 parameters including fundamental frequency, noise components and irregularity of the wave forms of the voices were utilized.Both series of the data were analysed by the Lawley's maximum likelihood method and canonical analysis.The perceptive study showed that there were only two dominant factors, related to the evaluative nature, and loudness sensation of the voices, respectively, which were sufficient in order to classify the three kinds of diseases.In the acoustical study also, two factors were sufficient to classify three kinds of diseases, although identification was rather difficult.The comparison of the results of the perceptive and the acoustical studies revealed that the former was more effective in classifying the laryngeal diseases, as far as the procedures used in this study were concerned.
耳鼻咽喉科臨床学会の論文