Study On The Subjective And Objective Parameter Of Voice Assessment

Objective:The objective was to develop a multi-parametric objective evaluation measurement and investigate its correlation with the subjective of voice.Methods:â‘ The voice samples were collected from 216 patients with voice disorder and 30 subjects with normal voice.â‘¡Perceptive evaluation: The recorded speech was evaluated with the gross hoarse G of GRBAS scale. Patient-based self-assessment tool is Voice Handicap Index (VHI-10).â‘¢The objective parameters, including fundamental frequency (Fo), Jitter , Shimmer, Harmonic to noise ratio(HNR), Normalized noise energy (NNE), and maximum phonatory time (MPT) which were measured mainly on a sustained /i:/ with the Dr. Speech 4.2.Result: (1) Subjective evaluation: The difference of G and VHI-10 between groups is significant except when VHI-10 use for vocal nodes and polyps. (2) Most objective parameters are sensitive in distinguishing major voice disorder, such as vocal cord polyps. (3) Most items have significant difference in pretreatment and post-treatment evaluations except Fo and HNR. (4) The Spearman coefficient is moderate between subjective evaluations and perceived evaluations. (5) The correlation coefficients is different in different levels, most of them is moderate. (6) Steps discriminant analysis functions including Shimmer, Fo,MPT,HNR, and it can identify 68.2% of grouped voice disorders. And the functions are different from gender.Conclusion: (1) Most items is sensitive in different groups except vocal nodes/polyps. (2) There are moderate relations between subjective and objective voice evaluation, furthermore, the relation is more significant as the voice problem get more serious. (3) It should combine subjective and objective tools to evaluate voice correctly.