Comparison of time-frequency analysis performance on hearts and murmurs

被引：0
|
作者：
Daliman, S [1 ]
Sha'ameri, AZ [1 ]
机构：
[1] Univ Teknol Malaysia, Fac Elect Engn, Dept Microelect & Comp Engn, Digital Signal Proc Lab, Johor Darud Takzim, Malaysia
来源：
SCORED 2003: STUDENT CONFERENCE ON RESEARCH AND DEVELOPMENT, PROCEEDINGS: NETWORKING THE FUTURE MIND IN CONVERGENCE TECHNOLOGY | 2003年
关键词：
time-varying signal; simulated heart sounds and murmurs; time-frequency distribution; Wigner-Ville distribution;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Time-frequency analysis is one of the method to deal with non-stationary and time-varying signal such as heart sounds and murmurs. Wigner-Ville distribution (WVD) is a popular tool to obtain time-frequency representation of signal. Windowed Wigner-Ville distribution (WWVD) and smooth windowed Wigner-Ville distribution (SWWVD) are the improvement method to overcome the problem faced by WVD. Determination of parameter setting of WWVD and SWWVD will eliminate the cross-terms and improve time-frequency representation. The accuracy of time-frequency representation of simulated heart sounds and murmurs will be compared and determined based on the mainlobe width, peak-to-sidelobe average ratio and signal-to-interference ratio. It is found that the most accurate time-frequency, representation can be obtained using the SWWVD.
引用
收藏
页码：1 / 4
页数：4
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