Time-frequency analysis of heart sounds and murmurs

Author

Daliman, S. ; Sha´ameri, A.Z.

Author_Institution

Digital Signal Process. Lab., Universiti Teknologi Malaysia, Johor Darul Takzim, Malaysia

Volume

2

fYear

2003

fDate

15-18 Dec. 2003

Firstpage

840

Abstract

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.

Keywords

Wigner distribution; cardiology; medical image processing; patient diagnosis; time-frequency analysis; SWWVD; heart sound; murmurs; smooth windowed Wigner-Ville distribution; time-frequency analysis; time-varying signal; Auditory system; Digital signal processing; Equations; Frequency estimation; Heart; Signal analysis; Signal processing; Signal resolution; Time frequency analysis; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications and Signal Processing, 2003 and Fourth Pacific Rim Conference on Multimedia. Proceedings of the 2003 Joint Conference of the Fourth International Conference on

Print_ISBN

0-7803-8185-8

Type

conf

DOI

10.1109/ICICS.2003.1292575

Filename

1292575