Teixeira, João PauloFernandes, Paula Odete2016-08-242016-08-242015Teixeira, João Paulo; Fernandes, Paula O. (2015). Acoustic analysis of vocal dysphonia. In Conference on ENTERprise Infonnation Systems / Tntemational Conference on Project MANagement / Conference on Health and Social Care Information Systems and Technologies, CENTERIS / ProjMAN / HCist 20151877-0509http://hdl.handle.net/10198/13166Voice acoustic analysis is becoming more and more usefúl in diagnosis of voice disorders or laryngological pathologies. The facility to record a voice sigiial is an advantage over other invasive techniques. This paper presents the statistical analyzes ofa set of voice parameters like jitter, shimmer and HNR over a 4 groups of subjects vvith dysphonia, fünctional dysphonia, hyperfünctional dysphonia, and psychogenic dysphonia and a control group. No statistical signifícance differences over pathologic groups were found but clear tendencies can be seen between pathologic and control group. The tendencies indicates this parameters as a good features to be used in an intelligent diagnosis system, moreover the jitter and shimmer parameters measured over different tones and vowels.engVocal acoustic analysisJitterShimmerHarmonic-to-noise ratio (HNR)Dysphoniaconference paper10.1016/j.procs.2015.08.544