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Time-frequency analysis of heart sounds using windowed and smooth windowed Wigner-ville distribution

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2 Author(s)
Daliman, S. ; Fac. of Electr. Eng., Universiti Teknologi Malaysia, Johor, Malaysia ; Sha'ameri, A.Z.

Heart sounds and murmurs are time-varying signals that would best be analyzed using time-frequency analysis. Windowed Wigner-Ville distribution (WWVD) and smooth windowed Wigner-Ville distribution (SWWVD) are used to obtain the time-frequency representation (TFR) of the signal. Determination of parameter setting of WWVD and SWWVD eliminates the cross-terms and improve TFR. The accuracy of TFR is determined based on the mainlobe width and signal-to-interference ratio. It is found that the most accurate TFR can be achieved using SWWVD.

Published in:

Signal Processing and Its Applications, 2003. Proceedings. Seventh International Symposium on  (Volume:2 )

Date of Conference:

2003