Objective Evaluation of Dysphonia: Preliminary Results of a Device Allowing Simultaneous Acoustic and Aerodynamic Measurements
Antoine Giovanni, Danièle Robert, Nicolas Estublier, Bernard Teston, M Zanaret, Maurice Cannoni · Folia Phoniatrica et Logopaedica · 2009
Voice quality analysis was performed in 88 normal speakers and 157 dysphonic speakers using a device that allows simultaneous study of acoustic and aerodynamic parameters during pronunciation of a sustained /a/. We compared the results with those of voice quality grading by a jury. The Mann-Whitney test showed significant differences between the grades of dysphonia for all the parameters chosen. Comparison of results (using discriminant factorial analysis) with perceptual evaluation by a jury showed concordance in 66.1%. Based on these preliminary results, the authors conclude that their protocol overlooks some relevant voice parameters like middle-term variations. Further study will be undertaken to take into account this type of variations.