Signal Denoising Based on Slip Threshold Value of Wavelet Packets

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Abstract:

The signal obtained through measurement is inevitably with noise and interference. Traditional signal denoising method often takes the threshold way to process the wavelets or wavelet packets of noise signal for the purpose of denoising. Denoising by making use of slip threshold value of wavelet packets is proposed by this paper, to quantize the slip threshold value of wavelet packet decomposition coefficient, so as to obtain the reconstructed signal denoising. It is shown by the computer simulation results that the slip threshold value is with good practical value.

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4971-4974

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May 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] J. BAILI, S. LAHOUAR ,M. HERGLI, et a. GPR signal denoising by discrete wavelet transform[J]. NDT&E International, 2009, 42( 8) : 696-703.

DOI: 10.1016/j.ndteint.2009.06.003

Google Scholar

[2] C.B. SMITH, S. AGAIAN,D. AKOPIAN. A wavelet denoising approach using polynomial threshold operators[J]. IEEE Signal Processing Letters, 2008, 15: 906-909.

DOI: 10.1109/lsp.2008.2001815

Google Scholar

[3] D. GIAOURIS,J.W. FINCH, O.C. FERREIRA. Wavelet denoising for electric drives[J]. IEEE Transactions on Industrial Electronics, 2008, 55( 2): 543-550.

DOI: 10.1109/tie.2007.911943

Google Scholar

[4] Y. KOPSINIS, S. MCLAUGHLIN. Development of EMD based denoising methods inspired by wavelet thresholding [J]. IEEE Transactions on Signal Processing, 2008, 57(4) : 1351-1362.

DOI: 10.1109/tsp.2009.2013885

Google Scholar

[5] H. LUO, Y.R. WANG,J. CUI . New approach to extract analog circuit fault features based on optimal fractional Fourier transform[J]. Chinese Journal of Scientific Instrument, 2009, 30(5): 997-1001.

Google Scholar

[6] Y.J. SHEN,D. SH. KONG, SH.P. YANG et al. New denoising method based on fractional wavelet transform[J]. Chinese Vibration Engineering Society, 2009, 28(2) : 32-35.W. Strunk Jr., E.B. White, The Elements of Style, third, Macmillan, New York, (1979).

Google Scholar