| 基于小波阈值的心电信号去噪算法 |
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| 引用本文： | 王慧静,蒲宝明,孙宏国,张全发.基于小波阈值的心电信号去噪算法[J].计算机系统应用,2012,21(12):145-148. |
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| 作者姓名： | 王慧静 蒲宝明 孙宏国 张全发 |
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| 作者单位： | 中国科学院 研究生院, 北京 100049;中国科学院 沈阳计算技术研究所, 沈阳 110168;中国科学院 研究生院, 北京 100049;中国科学院 研究生院, 北京 100049;中国科学院 沈阳计算技术研究所, 沈阳 110168;中国科学院 研究生院, 北京 100049;中国科学院 沈阳计算技术研究所, 沈阳 110168 |
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| 摘 要： | 将小波阈值方法应用于心电信号的去噪处理，在对常用阈值函数理解分析的基础上提出一种改进的阈值函数，并利用Matlab对MIT-BIH数据库中的心电数据进行仿真，分别采用常用阈值函数和改进阈值函数进行硬、软阈值处理．实验表明，改进阈值函数的软阈值去噪方法能有效地滤除心电信号中主要干扰，并较好地保留了心电信号的特征信息．
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| 关 键 词： | 小波阈值 心电信号 阈值函数 Matlab仿真 |
| 收稿时间： | 2012/4/18 0:00:00 |
| 修稿时间： | 2012/5/15 0:00:00 |
Denoising Algorithm of ECG Signals Based on Wavelet Threshold |
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| WANG Hui-Jing,PU Bao-Ming,SUN Hong-Guo and ZHANG Quan-Fa.Denoising Algorithm of ECG Signals Based on Wavelet Threshold[J].Computer Systems& Applications,2012,21(12):145-148. |
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| Authors: | WANG Hui-Jing PU Bao-Ming SUN Hong-Guo and ZHANG Quan-Fa |
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| Affiliation: | Graduate University, Chinese Academy of Sciences, Beijing 100049, China;Shenyang Institute of Computing Technology, Chinese Academy of Sciences, Shenyang 110168, China;Graduate University, Chinese Academy of Sciences, Beijing 100049, China;Graduate University, Chinese Academy of Sciences, Beijing 100049, China;Shenyang Institute of Computing Technology, Chinese Academy of Sciences, Shenyang 110168, China;Graduate University, Chinese Academy of Sciences, Beijing 100049, China;Shenyang Institute of Computing Technology, Chinese Academy of Sciences, Shenyang 110168, China |
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| Abstract: | In this paper, the wavelet threshold method was applied to ECG signal denoising. We proposed an improved threshold function on the basis of analysis and understanding of the commonly used ones. And the MIT-BIH database was used to simulate the ECG data in Matlab, respectively using common threshold functions and improved one for hard and soft thresholding to remove the noise. Experimental results show that soft thresholding method of improved threshold function can effectively filter out the main interference, and better to retain the characteristics of the ECG. |
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| Keywords: | wavelet threshold ECG threshold function Matlab simulation |
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