| 基于平稳小波变换的自适应心电信号去噪方法 |
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| 引用本文： | 董红生,张爱华,郝晓弘.基于平稳小波变换的自适应心电信号去噪方法[J].中国医疗器械杂志,2009,33(3):163-166. |
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| 作者姓名： | 董红生 张爱华 郝晓弘 |
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| 作者单位： | 兰州理工大学,电气与信息工程学院,兰州,730050 |
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| 摘 要： | 针对小波变换的阀值去噪在心电信号消噪中的缺陷，提出将平稳小波变换和自适应滤波方法相结合的心电信号消噪方法。平稳小波变换有效地抑制了传统离散正交小波变换易产生Gibbs振荡现象。在高尺度的平稳小波分解系数中引入了自适应滤波，既消除了基线漂移噪声，又较好的保持了心电信号的低频低幅的P波、T波及ST段波的形态。这对于进一步分析心电信号的其他特征信息具有重要作用。
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| 关 键 词： | ECG消噪 平稳小波变换 基线漂移 自适应滤波 |
A Daptive de-noising of ECG Signal Based on Stationary Wavelet Transform |
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| DONG Hong-sheng,ZHANG Ai-hua,HAO Xiao-hong.A Daptive de-noising of ECG Signal Based on Stationary Wavelet Transform[J].Chinese Journal of Medical Instrumentation,2009,33(3):163-166. |
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| Authors: | DONG Hong-sheng ZHANG Ai-hua HAO Xiao-hong |
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| Institution: | (College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou, 730050, China) |
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| Abstract: | According to the limitations of wavelet threshold in de-noising method, we approached a combining algorithm of the stationary wavelet transform with adaptive filter. The stationary wavelet transformation can suppress Gibbs phenomena in traditional DWT effectively, and adaptive filter is introduced at the high scale wavelet coefficient of the stationary wavelet transformation. It would remove baseline wander and keep the shape of low frequency and low amplitude P wave, T wave and ST segment wave of ECG signal well. That is important for analyzing ECG signal of other feature information. |
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| Keywords: | ECG de-noising stationary wavelet transform baseline wander adaptive filter |
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