An Efficient ECG Denoising Method Based on Empirical Mode Decomposition, Sample Entropy, and Improved Threshold Function

Table 3

The mean comparison of several denoising methods with different input SNR.

Input SNR	EMD soft threshold	Wavelet soft threshold	EMD wavelet	Proposed method
6 dB	3.6	5.0	6.2	8.38
10 dB	3.3	5.8	6.1	7.23
15 dB	2.3	5.1	5.15	6.25
20 dB	0.96	4.5	4.7	5.43