文章摘要
张天瑜.自由分布式FDR假设检验阈值算法的小波域信号增强算法[J].声学技术,2010,(1):78~82
自由分布式FDR假设检验阈值算法的小波域信号增强算法
Research on signal enhancement algorithm in wavelet domain with threshold algorithm of free distributed FDR hypotheses test
投稿时间:2008-10-31  修订日期:2009-01-06
DOI:
中文关键词: 小波去噪  信号增强  通用阈值  错误发现率  小波阈值
英文关键词: wavelet denoising  signal enhancement  universal threshold  FDR  wavelet threshold
基金项目:无锡市广播电视大学校级课题基金资助
作者单位E-mail
张天瑜 无锡市广播电视大学机电工程系, 江苏无锡, 214011 zhangtianyu163@tom.com 
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中文摘要:
      在小波阈值增强算法中存在的主要问题是阈值的选取。Donoho提出的通用阈值在实际的应用中效果并不十分理想。利用统计学中的自由分布式错误发现率(False Discovery Rate,FDR)假设检验方法,提出一种新的阈值算法。选取sym4小波函数对带噪信号进行处理,仿真结果表明该算法的信号增强效果优于通用阈值的信号增强效果。
英文摘要:
      The main problem of wavelet threshold enhancement algorithm is threshold selection.The universal threshold proposed by Donoho is not very ideal in practice.According to the method of free distributed FDR hypotheses testing in statistics,a new threshold algorithm is proposed.Sym4 wavelet function is selected to deal with the noise signal.The simulation shows that the proposed algorithm has better effects than that of the universal threshold on signal enhancement.
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