Title :
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
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;
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
DOI :
10.1109/ICICS.2003.1292575
