*S. Poornachandra
نویسندگان
چکیده
This paper proposes a model for eliminating noise from ECG using α-trimmed thresholding. In this paper, the α-trimmed thresholding tested in the wavelet based Adaptive Filter Model. The Wavelet co-efficients at every sub-band level is made adapted by LMS algorithm to minimum mean square value and thresholded the adapted coefficients. It is shown that the proposed thresholding method offers variable thresholding to remove redundant wavelet coefficients. The proposed model has considered both thresholding and adaptation for smoothing the signal in the wavelet domain. It finds its applications in noise removal technique, Data compression in telemedicine etc.,
منابع مشابه
SYNTHESIS AND BIOLOGICAL ACTIVITY OF NOVEL NITROGEN CONTAINING ANALOGUES OF PODOPHYLLOTOXIN B.Umesha
متن کامل
Synthesis of novel triazole functionalized pyridine derivatives as potential antimicrobial and anti-biofilm agents
R Naresh Kumar, G Mallareddy, P Nagender, P Sambasiva Rao, Y Poornachandra, P Ranjithreddy, C Ganesh Kumar & B Narsaiah* a Fluoroorganic Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India b Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India c Academy of Scientific and Innovative Re...
متن کاملFuzzy Logic Based Thresholding for Hyper Shrinkage
Signal denoising is the process of reducing the unwanted noise in order to restore the original signal. Donoho and Johnstone’s denoising algorithm based on wavelet thresholding replace the small coefficients by zero and keep or shrink the coefficients with absolute value above the threshold. So the threshold selection becomes more important in signal denoising. In this paper the threshold selec...
متن کاملOne-pot three-component domino protocol for the synthesis of novel pyrano[2,3-d]pyrimidines as antimicrobial and anti-biofilm agents.
A simple and facile synthesis of a series of novel pyrano[2,3-d]pyrimidines has been achieved successfully via the one-pot three-component reaction of 2-amino-7-methyl-5-oxo-4-phenyl-4,5-dihydropyrano[4,3-b]pyran-3-carbonitriles, DMF-DMA and arylamines in the presence of 1-butyl-3-methylhydrogensulphate [Bmim]HSO4 ionic liquid. This method has several advantages such as high yields, clean react...
متن کاملSubband Adaptive Shrinkage Function Using Fuzzy Logic
ECG is the electrical activity of the heart which uses for the various diagnostic purposes. Denoising is a process which helps to remove the noise from the original signal. Wavelet transform is suitable for non stationary signal such as ECG signal, EEG signal, PPG signal etc. The wavelet coefficients obtained by wavelet transform are made zero which in turns reduces the noise to zero level. Fuz...
متن کامل