基于离散平稳小波变换的心电信号去噪方法  

De-noising of ECG signal based on discrete stationary wavelet transform

作　　者：季虎[1] 孙即祥[1] 林成龙[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《计算机应用》2005年第6期1318-1320,共3页journal of Computer Applications

摘　　要：提出一种基于离散平稳小波变换的心电信号噪声去除方法,通过对心电信号进行多层离散平稳小波变换,根据噪声的不同来源及其频带分布特点,对变换后的细节信号采用不同的阈值去噪方案。该方法有效克服传统离散正交小波变换去噪时容易产生Gibbs现象的问题,从而达到保持心电波形特征且抑制噪声的双重目的。The de-noising method based on the stationary wavelet tranform was proposed. According to the different source and the trait of frequency distributing, different de-noising methods for the detail signal transformed by selecting coiflets wavelet to decompose the noisy of ECG signal for several levels were used. The experiment shows that this method can avoid the Gibbs phenomena which often occurs in traditional DWT de-nosing method.

关 键 词：平稳小波变换 心电信号 去噪 离散小波变换 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]