Instantaneous Frequency Estimation of Diastolic Murmurs Based on EMD and TEO

摘要：

The algorithm based on the Empirical Mode Decomposition (EMD) and Teager Energy Operation (TEO) is proposed as effective approach for estimating the instantaneous frequency of diastolic murmurs. EMD can adaptively decompose signal into a series of zero mean Amplitude ModulationFrequency Modulation (AM-FM) Intrinsic Mode Functions (IMFs). TEO are capable of tracking the instantaneous frequency of the AM-FM component at any time instant. Two simulated signals are conducted to evaluate the effectiveness of the proposed method. Results show that the method can well identify the instantaneous frequency and gives the accurate estimation. In end, the instantaneous frequencies of diastolic murmurs from clinic coronary artery disease object and normal object are estimated using the method. Results indicate that instantaneous frequencies have obvious differences between patient and normal; Instantaneous frequency of diastolic murmurs provides a strong basis for the detection of heart attacks.

关键词： diastolic murmurs instantaneous frequency empirical mode decomposition teager energy operator

作者: Zhao Zhidong Pan Min

作者单位: School of Communication Engineering Hangzhou Dianzi University Hangzhou, china College of biomedical engineering and instrument science Zhejiang University Hangzhou, China

会议类型: 国际会议

会议名称: The 1st International Conference on Bioinformatics and Biomedical Engineering(iCBBE 2007)(首届IEEE生物信息与生物医学工程国际会议)

会议地点: 武汉

会议语种:英文

页码: 843-846

在线出版日期: 2007-07-06（万方平台首次上网日期，不代表论文的发表时间）