| 智能型心功能分析系统中的去噪声算法研究 |
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| 引用本文： | 王植存,张元.智能型心功能分析系统中的去噪声算法研究[J].华北水利水电学院学报,2006,27(3):58-60. |
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| 作者姓名： | 王植存 张元 |
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| 作者单位： | [1]郑州大学信息工程学院,河南郑州450052 [2]河南工业大学,河南郑州450052 |
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| 基金项目： | 河南省教育厅科技攻关项目 |
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| 摘 要： | 为了对智能型心功能分析系统寻找有效的去噪声方法,在Matlab6.5仿真环境下,以小波变换系数模极大值去噪声算法和Donoho的软阈值去噪声算法为基础,对心电(ECG)信号的噪声去除进行了研究.仿真结果表明,该算法在一定程度上提高了信噪比,提高了心电信号的质量,为进一步提取有效的生理信息打下了基础.
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| 关 键 词： | 噪声消除 小波变换 模极大值 软阈值 |
| 文章编号： | 1002-5634（2006）03-0058-03 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-05-10 |
The De-noising Algorithm Study for the Intelligent Cardiovascular Function Analysing System |
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| WANG Zhi-cun, ZHANG Yuan.The De-noising Algorithm Study for the Intelligent Cardiovascular Function Analysing System[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2006,27(3):58-60. |
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| Authors: | WANG Zhi-cun ZHANG Yuan |
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| Affiliation: | 1. College of Information Engineering, Zhengzhou University, Zhengzhou 450052, China; 2. Henan University of Technology, Zhengzhou 450052, China |
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| Abstract: | The intelligent cardiovascular function analyzing system is a new computer-controlled cardiovascular function detecting and analyzing system without suffering injuries.The aim of this study is to find an effective de-noising method for the system mentioned above.The wavelet transform has been used in de-noising field for its outstanding focusing characteristics in time-frequency domain.The method used combines the wavelet coefficient modulus method with the soft-thresholding method by Donoho to move noise from the electrocardiogram(ECG),using Matlab 6.5.The SNR do gain,although it is not very large.So this algorithm lays a solid basis for extracting useful physical information. |
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| Keywords: | denoise wavelet transform modulus maxima soft threshold |
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