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

Table 1

comparison of signal denoising results of the MIT-BIH database with WGN (20 dB) added.

ECG signal	EMD soft threshold	Wavelet soft threshold	EMD wavelet	Proposed method
100	1.8	5.7	5.6	6.0
104	1.4	4.5	5.5	5.4
105	0.8	4.3	4.4	6.7
106	1.2	3.5	3.4	4.2
115	0.1	4.4	4.7	5.2
215	0.5	4.6	4.7	5.1
Average	0.96	4.5	4.71	5.43