Improved de-noising method based on wavelet packet energy subsection threshold

Abstract

Abstract: This paper points out the boundedness of wavelet packet de-noising with single threshold, it puts forward an improved wavelet packet energy subsection threshold de-noising, and compares with other wavelet packet de-noising. Comparing with other wavelet packet de-noising, the simulation results show that improved wavelet packet energy subsection threshold de-noising is more effective.

Key words: wavelet packet, energy, subsection threshold, de-noising

摘要： 指出了单一阈值选取规则小波包降噪方法的局限性，提出了一种改进的小波包能量分段阈值降噪方法，并与其他小波包降噪方法进行对比分析。仿真结果表明，较其他小波降噪方法，改进的小波包能量分段阈值降噪方法去噪效果更佳。

关键词: 小波包, 能量, 分段阈值, 降噪

ZHONG Mengchun, ZHANG Chunlin, LI Hua, WANG Baoqi. Improved de-noising method based on wavelet packet energy subsection threshold[J]. Computer Engineering and Applications, 2015, 51(5): 204-207.

钟孟春，张春林，李华，王宝琦. 改进的小波包能量分段阈值降噪方法[J]. 计算机工程与应用, 2015, 51(5): 204-207.

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Improved de-noising method based on wavelet packet energy subsection threshold

改进的小波包能量分段阈值降噪方法

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