Subband-adaptive shrinkage for denoising of ECG signals

Authors:
S. Poornachandra;N. Kumaravel
Affiliations:
Department of Biomedical Engineering, SSN College of Engineering, Anna University, Chennai, India;Department of Electronics and Communication Engineering, Anna University, Chennai, India
Venue:
EURASIP Journal on Applied Signal Processing
Year:
2006

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Abstract

This paper describes subband dependent adaptive shrinkage function that generalizes hard and soft shrinkages proposed by Donoho and Johnstone (1994). The proposed new class of shrinkage function has continuous derivative, which has been simulated and tested with normal and abnormal ECG signals with added standard Gaussian noise using MATLAB. The recovered signal is visually pleasant compared with other existing shrinkage functions. The implication of the proposed shrinkage function in denoising and data compression is discussed.