Title :
Study of complexity in normal and pathological speech signals
Author :
Torres, M.E. ; Gamero, L.G. ; Rufiner, H.L. ; Martinez, C. ; Milone, D.H. ; Schlotthauer, G.
Author_Institution :
Laboratorio de Dinamicas no Lineales y Senales, Univ. Nacional de Entre Rios, Argentina
Abstract :
The application of complexity measures to the analysis of different biological signals have contributed to give a better understanding of the dynamical systems involved in their generation. In this work we present a comparative study of the complexity of speech signals from subjects with normal phonation and patients with laryngeal pathologies of the vocal system. Different complexity measures were considered in this study. Our results suggest that some of them would allow to discriminate between normal and pathological voices. This result could give an indication in order to assist the diagnostic or the treatment in the clinical practice.
Keywords :
medical signal processing; nonlinear dynamical systems; speech; speech processing; biological signals; complexity measures; dynamical systems; laryngeal pathologies; normal phonation; normal speech signals; normal voices; pathological speech signals; pathological voices; vocal system; Chaos; Difference equations; Differential equations; Entropy; Laboratories; Noise robustness; Nonlinear dynamical systems; Pathology; Signal analysis; Speech;
Conference_Titel :
Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE
Print_ISBN :
0-7803-7789-3
DOI :
10.1109/IEMBS.2003.1280385
