Title :
Perturbation analysis of EGG for detecting laryngeal pathology
Author :
Song, Chulgyu ; Kim, Jongmyoung ; Lee, Myoungho
Author_Institution :
Dept. of Electr. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
In this study, the authors have evaluated the effect of amplitude and frequency perturbation of electroglottograph (EGG) signal during single vowels associated with laryngeal pathology. The normal EGG signal was correctly characterized by a 9th order autoregressive (AR) model using the parametric method. The optimal order of the AR model was analyzed by determining the transfer function. Perturbations in the fundamental pitch and in the peak amplitude of EGG signal were derived with a 4-electrode system using the modulation-demodulation techniques investigated for the purpose of developing a decision criteria for laryngeal function identification
Keywords :
bioelectric potentials; 9th order autoregressive model; decision criteria; fundamental pitch; laryngeal function identification; model optimal order; modulation-demodulation techniques; parametric method; perturbation analysis; single vowels; transfer function; Amplitude modulation; Autoregressive processes; Demodulation; Electrodes; Frequency; Larynx; Pathology; Signal processing; Skin; Transfer functions;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.415464
