PURPOSE: to investigate the first three forms of bandwidth values (B1, B2 and B3) and their correlation with auditory perception analysis of oral output for dysphonic individuals and compare them with a control group. METHODS: the studied group was represented by a voice sample and auditory quality perception judgment from the data bank of the Integrated Laboratory for Analysis of Acoustics and Cognition (LIAAC-PUCSP), the sample being 17 individuals, all female, of various ages between 30 and 65-old, all had been diagnosed with dysphonia. Samples were previously examined as for the frequency of group members and 5 other individuals (female) not having diagnosed any vocal alterations (CONTROL GROUP). The results were considered in a qualitative and quantitative manner by means of Qui-square tests and correlated to the auditory perception analysis data. RESULTS: the variations in vocal quality reveal an influence on the average band values of the study group members were: nasality, air escape, pharynx movement (contraction and expansion), tongue height (high-low) and also from time to time, vocal characteristic of adjustments with fry, crepitant voice and whispery voice. The B1 and B2 measurements demonstrate significant differences in both repetitions (gata 1 and 2) with respective values of B1 p-value=0.023 and B2 p-value=0.000 (for gata 1) and B1 p-value=0.064 (for gata 2). CONCLUSION: the B1 and B2 values reveal significant statistical differences between the study group members having dysphonia as a result of glotic alteration and the control group.
Voice Quality; Auditory Perception; Voice Disorders; Speech Acoustics; Speech Production Measurement
