Skip to main content
EURASIP Journal on Advances in Signal Processing
Download PDF
  • Research Article
  • Open access
  • Published:

Subband-Adaptive Shrinkage for Denoising of ECG Signals

EURASIP Journal on Advances in Signal Processing volume 2006, Article number: 081236 (2006) Cite this article

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.

References

  1. Donoho DL: De-noising by soft thresholding. IEEE Transactions on Information Theory 1995, 41(3):613–627. 10.1109/18.382009

    Article  MathSciNet  Google Scholar 

  2. Gao H-Y: Wavelet shrinkage denoising using the non-negative garrote. Journal of Computational and Graphical Statistics 1998, 7(4):469–488. 10.2307/1390677

    MathSciNet  Google Scholar 

  3. Bruce GA, Gao H-Y: Understanding WaveShrink: variance and bias estimation. Biometrika 1996, 83(4):727–745. 10.1093/biomet/83.4.727

    Article  MathSciNet  Google Scholar 

  4. Zhang X-P, Desai MD: Adaptive denoising based on SURE risk. IEEE Signal Processing Letters 1998, 5(10):265–267. 10.1109/97.720560

    Article  Google Scholar 

  5. Stein C: Estimation of the mean of a multivariate normal distribution. Annals of Statistics 1981, 9(6):1135–1151. 10.1214/aos/1176345632

    Article  MathSciNet  Google Scholar 

  6. Gao H-Y, Bruce AG: Waveshrink with firm shrinkage. Statistica Sinica 1997, 7(4):855–874.

    MathSciNet  MATH  Google Scholar 

  7. Poornachandra S, Kumaravel N: Hyper-trim shrinkage for denoising of ECG signal. Digital Signal Processing 2005, 15(3):317–327.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Biomedical Engineering, SSN College of Engineering, Anna University, Chennai, 600025, India

    S. Poornachandra

  2. Department of Electronics and Communication Engineering, Anna University, Chennai, 600025, India

    N. Kumaravel

Authors
  1. S. Poornachandra
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. N. Kumaravel
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to S. Poornachandra.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Poornachandra, S., Kumaravel, N. Subband-Adaptive Shrinkage for Denoising of ECG Signals. EURASIP J. Adv. Signal Process. 2006, 081236 (2006). https://doi.org/10.1155/ASP/2006/81236

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1155/ASP/2006/81236

Keywords