Nonlinear dynamic analysis of voices before and after surgical excision of vocal polyps
- 16 April 2004
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 115 (5), 2270-2277
- https://doi.org/10.1121/1.1699392
Abstract
Phase space reconstruction, correlation dimension, and second-order entropy, methods from nonlinear dynamics, are used to analyze sustained vowels generated by patients before and after surgical excision of vocal polyps. Two conventional acoustic perturbation parameters, jitter and shimmer, are also employed to analyze voices before and after surgery. Presurgical and postsurgical analyses of jitter, shimmer, correlation dimension, and second-order entropy are statistically compared. Correlation dimension and second-order entropy show a statistically significant decrease after surgery, indicating reduced complexity and higher predictability of postsurgical voice dynamics. There is not a significant postsurgical difference in shimmer, although jitter shows a significant postsurgical decrease. The results suggest that jitter and shimmer should be applied to analyze disordered voices with caution; however, nonlinear dynamic methods may be useful for analyzing abnormal vocal function and quantitatively evaluating the effects of surgical excision of vocal polyps.Keywords
This publication has 35 references indexed in Scilit:
- Nonlinear dynamic analysis in signal typing of pathological human voicesElectronics Letters, 2003
- Nonlinear dynamic analysis of speech from pathological subjectsElectronics Letters, 2002
- Equalization of speech and audio signals using a nonlinear dynamical approachIEEE Transactions on Speech and Audio Processing, 1999
- Correlation dimension of electroglottographic data from healthy and pathologic subjectsThe Journal of the Acoustical Society of America, 1997
- Nonlinear dynamical analysis of speechThe Journal of the Acoustical Society of America, 1996
- A nonlinear dynamical systems analysis of fricative consonantsThe Journal of the Acoustical Society of America, 1995
- Microsurgical Treatment of Benign Vocal Fold Lesions: Indications, Technique, ResultsFolia Phoniatrica et Logopaedica, 1992
- Spurious dimension from correlation algorithms applied to limited time-series dataPhysical Review A, 1986
- Geometry from a Time SeriesPhysical Review Letters, 1980
- Vocal cord nodules and polyps — the role of surgical treatment.The Laryngoscope, 1971