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Received:April 18, 2012 Revised:May 15, 2012
Received:April 18, 2012 Revised:May 15, 2012
中文摘要: 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.
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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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.计算机系统应用,2012,21(12):145-148
WANG Hui-Jing,PU Bao-Ming,SUN Hong-Guo,ZHANG Quan-Fa.Denoising Algorithm of ECG Signals Based on Wavelet Threshold.COMPUTER SYSTEMS APPLICATIONS,2012,21(12):145-148
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.计算机系统应用,2012,21(12):145-148
WANG Hui-Jing,PU Bao-Ming,SUN Hong-Guo,ZHANG Quan-Fa.Denoising Algorithm of ECG Signals Based on Wavelet Threshold.COMPUTER SYSTEMS APPLICATIONS,2012,21(12):145-148
