Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/131611
Title: First heart sound detection for phonocardiogram segmentation
Authors: Wang, P.
Kim, Y.
Ling, L.H. 
Soh, C.B.
Issue Date: 2005
Source: Wang, P., Kim, Y., Ling, L.H., Soh, C.B. (2005). First heart sound detection for phonocardiogram segmentation. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings 7 VOLS : 5519-5522. ScholarBank@NUS Repository.
Abstract: This paper presents an algorithm for accurate and improved detection of the first heart sound S1 for heart sound cardiac cycle segmentation under noisy environments. The proposed algorithm integrates an S 1/S2 selection step and an S1 identification step. An adaptive sub-level tracking algorithm based on wavelet transform is proposed to separate the S1 and S2 from other components such as murmurs and noises. This is followed by a detection procedure based on Shannon energy to reject the overlapping interference so that the peaks of S1 and S2 can be detected. Criteria of time interval, energy and phonocardiogram (PCG) collecting position are used to identify Si with respect to the beginning of each cardiac cycle. Experimental results show that the proposed algorithm leads to an efficient segmentation of PCG cycle. Due to its simplicity and fast implementation, the method can be deployed clinically for further analysis and eventual use. © 2005 IEEE.
Source Title: Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
URI: http://scholarbank.nus.edu.sg/handle/10635/131611
ISBN: 0780387406
ISSN: 05891019
Appears in Collections:Staff Publications

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