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. 2016 Sep 25;16(10):1584. doi: 10.3390/s16101584

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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The SNR for the two groups of simulated ECG signals filtered by all evaluated methods when the variance $σ^{2}$ of Gaussian noise is 20, 30, 40, 50 and 60, respectively. (a) The first group. (b) The second group.