Conference Paper

Time-frequency analysis of heart sounds and murmurs

Digital Signal Process. Lab., Universiti Teknologi Malaysia, Johor Darul Takzim, Malaysia
DOI: 10.1109/ICICS.2003.1292575 Conference: Information, Communications and Signal Processing, 2003 and the Fourth Pacific Rim Conference on Multimedia. Proceedings of the 2003 Joint Conference of the Fourth International Conference on, Volume: 2
Source: IEEE Xplore


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 of the signal. Determination of parameter setting of WWVD and SWWVD will eliminate the cross-terms and improve time-frequency representation. The accuracy of time-frequency representation will be determined based on the mainlobe width and signal-to-interference ratio. It is found that the most accurate time-frequency representation can be achieved using the SWWVD.

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