Performance Analysis of Multiscale Entropy for the Assessment of ECG Signal Quality

Figure 2

The real ECG and real ECG added noises with different SNRs from −20 dB to 40 dB, with a step of 10 dB. (a) The real ECG and the real plus BW. (b) The real ECG and the real plus EM. (c) The real ECG and the real plus MA. (d) The real ECG and the real plus PL noise.

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