A new algorithm for detection of S1 and S2 heart sounds

被引：0
|
作者：
Kumar, D. [1 ]
Carvalho, P. [1 ]
Antunes, M. [1 ]
Gil, P. [1 ]
Henriques, J. [1 ]
Eugenio, L. [1 ]
机构：
[1] Univ Coimbra, Ctr Informat & Syst, Coimbra, Portugal
来源：
2006 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, VOLS 1-13 | 2006年
关键词：
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper presents a new algorithm for segmentation and classification of S1 and S2 heart sounds without ECG reference. The proposed approach is composed of three main stages. In the first stage the fundamental heart sound lobes are identified using a fast wavelet transform and the Shannon energy. Next, these lobes are validated and classified into S1 and S2 classes based on Mel-frequency coefficients and on a non supervised neural network. Finally, regular heart cycles are identified in a post-processing stage by a heart rhythm criterion. This approach was tested using sound samples collected from prosthetic valve implanted patients. Results are comparable with ECG based approaches.
引用
收藏
页码：2428 / 2431
页数：4
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