›› 2010, Vol. 30 ›› Issue (2): 121-124.DOI: 10.3969/j.issn.1006-1355.2010.02.121

• 信号处理与故障诊断 • 上一篇    下一篇

《改进的小波阈值去噪方法及其在MATLAB中的仿真》

李树钰   

  1. (西安石油大学机械工程学院,西安710065)
  • 收稿日期:2009-09-18 修回日期:1900-01-01 出版日期:2010-04-18 发布日期:2010-04-18
  • 通讯作者: 李树钰

《Improved Wavelet Threshold Denoising Method and Its Simulation Using MATLAB》

LI Shu-yu   

  1. (School of Mechniacal Engineering, Xian Shiyou University, Xian710065, China)
  • Received:2009-09-18 Revised:1900-01-01 Online:2010-04-18 Published:2010-04-18
  • Contact: LI Shu-yu

摘要: 对比分析各种小波去噪方法,在此基础上构造一个新的阈值函数,并对阈值的选取做了一定的改进利用MATLAB软件进行信号降噪仿真实验,结果证明改进后的方法优于传统方法,取得较好的去噪效果。

关键词: 振动与波, 小波变换, 阈值去噪, 信噪比, MATLAB工具

Abstract: In this paper, several wavelet denoising methods are compared and analyzed. On these bases, a new threshold function is constructed. The improvement of threshold selecting is made. Simulation experiment of signal denoising is carried out using MATLAB software. The advantage of improved wavelet denoising method is demonstrated, and better denoising effect is gained.

Key words: vibration and wave, wavelet transform, threshold denoising, signal to noise ratio, MATLAB

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