摘要
以离散平稳小波变换的心电信号噪声去除方法为基础,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。并提出一种基于3σ准则原理的阈值选取方法。经MIT/BIH国际标准数据库中验证,试验表明,该方法行之有效。
The de - noising methods based on the stationary wavelet transform. According to the different source and the trait of frequency distributing, different de - noising methods for the detail signal transformed. A novel method based on the 3 σrule is brought forward to determine the threshold. ECG signals taken from the MIT/BIH database were tested, and is an efficient method.
出处
《机械设计与制造》
北大核心
2006年第11期107-109,共3页
Machinery Design & Manufacture
关键词
心电信号
离散小波变换
3σ准则
去噪
Electrocardiogram
Stationary wavelet transform
3σ rule
de - noising
