Two dimensional processing of speech and ecg signals using the wigner-ville distribution

Boashash B. and Abeysekera S.S. (1986) Two dimensional processing of speech and ecg signals using the wigner-ville distribution. Proceedings of SPIE - The International Society for Optical Engineering, 697 142-153. doi:10.1117/12.976214


Author Boashash B.
Abeysekera S.S.
Title Two dimensional processing of speech and ecg signals using the wigner-ville distribution
Journal name Proceedings of SPIE - The International Society for Optical Engineering   Check publisher's open access policy
ISSN 1996-756X
Publication date 1986-12-10
Sub-type Article (original research)
DOI 10.1117/12.976214
Open Access Status Not Open Access
Volume 697
Start page 142
End page 153
Total pages 121
Subject 2604 Applied Mathematics
2504 Electronic, Optical and Magnetic Materials
3104 Condensed Matter Physics
2208 Electrical and Electronic Engineering
1706 Computer Science Applications
Abstract The Wigner-Ville Distribution (WVD) has been shown to be a valuable tool for the analysis of non-stationary signals such as speech and Electrocardiogram (ECG) data. The one-dimensional real data are first transformed into a complex analytic signal using the Hilbert Transform and then a 2-dimensional image is formed using the Wigner-Ville Transform. For speech signals, a contour plot is determined and used as a basic feature for a pattern recognition algorithm. This method is compared with the classical Short Time Fourier Transform (STFT) and is shown, to be able to recognize isolated words better in a noisy environment. The same method together with the concept of instantaneous frequency of the signal is applied to the analysis of ECG signals. This technique allows one to classify diseased heart-beat signals. Examples are shown.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 28 Jun 2016, 14:25:32 EST by System User