| 基于新阈值函数的小波阈值降噪方法 |
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| 引用本文： | 宋倩倩,双凯.基于新阈值函数的小波阈值降噪方法[J].国外电子元器件,2014(1):11-13,16. |
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| 作者姓名： | 宋倩倩 双凯 |
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| 作者单位： | 中国石油大学（北京）,北京102249 |
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| 基金项目： | 国家科技重大专项（专题）（2011ZX05009-005-04E） |
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| 摘 要： | 小波阈值降噪方法中,传统硬阈值函数连续性差,传统软阈值函数过于光滑,本文针对传统方法的缺点提出一种基于压缩能量思想的阈值函数。通过Matlab仿真表明,改进的阈值函数使用minimaxi阈值效果较好,改进的方案比传统的软、硬、半软阈值降噪能得到较高的信噪比,使信号得到较好的滤波效果。
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| 关 键 词： | 小波降噪 新阈值函数 压缩能量 Matlab |
Wavelet de-noising based on a new threshold function of energy compression |
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| SONG Qian-qian,SHUANG Kai.Wavelet de-noising based on a new threshold function of energy compression[J].International Electronic Elements,2014(1):11-13,16. |
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| Authors: | SONG Qian-qian SHUANG Kai |
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| Affiliation: | (China University of Petroleum(Beijing), Beijing 102249, China) |
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| Abstract: | In wavelet threshold de-noising method, the traditional hard thresholding function has poor continuity, the traditional soft threshold function is too smooth, this paper proposes a new threshold function based on energy compression thought. According to the simulation results of matlab, this improved method is better than the traditional ones. |
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| Keywords: | wavelet de-noising new threshold function energy compression Matlab |
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