文章摘要
基于matlab的小波信号降噪技术
Wavelet signal denoising technique based on matlab
  
DOI:
中文关键词: 小波变换  降噪  阈值  matlab
英文关键词: wavelet transform  de-noising  threshold  matlab
基金项目:湖南省科技厅重点项目(2013TT1007)
作者单位
汤立文1,唐东峰2 1.湖南兴业太阳能科技有限公司湖南 湘潭 4300212.湖南科技大学 信息与电气工程学院湖南 湘潭 411201 
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中文摘要:
      论述了小波变换的一般理论和小波变换在信号降噪中的应用,比较了不同小波基、阈值和分解层数下的小波降噪结果.并在matab平台上仿真实现,利用信号噪声比(SNR)和均方根误差(RMSE)这2个评价指标评价小波降噪的效果.实验结果表明,小波变换在信号降噪中能取得较好的结果.
英文摘要:
      The general theory of wavelet transform and the application of wavelet transform in signal de-noising were discussed. Different wavelet de-noising results with different wavelet bases,thresholds and decomposition level were compared . Matlab was used to carry out the simu1ation. Signal to noise ratio (SNR) and root mean square error (RMSE) were used to evaluate the effect of wavelet de-noising. Experimental results show that, the wavelet transform obtain better results in signal de-noising.
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