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1 Journal of Medical Informatics & Technologies

1 2013

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An application of the Lp-norm in robust weighted averaging of biomedical signals

Pander T., Przybyła T., Czabański R.

Journal of Medical Informatics & Technologies

2013

Vol. 22

71--78

Averaging is one of the basic methods of statistical analysis of experimental data where the response of the system is periodic or quasi-periodic. As long as the noise are Gaussian, the standard averaging leads to good results and effective noise reduction. However, when the distortions have impulsive nature, then such an approach leads to a deterioration of the system. In this case the robust methods should be applied which are characterized by resistance to a statistical sample spoken. In this work a robust averaging method based on the minimization of a scalar criterion function using a Lp-norm functions are presented. The effectiveness of the proposed method was tested in an averaging periods aligned ECG signal cycles in the presence of impulse noise.