Table 15. Average relative differences in signal energy of 10 real ECGs.

Original SNR	Noise Type	Denoising Method
		IEMD -ATD	UT-H	UT-S	Cust-H	Cust-S
-5 dB	ECN	1.545	1.614	1.532	1.645	1.613
	EMG	0.137	0.362	0.274	0.797	0.542
	WN	-0.002	-0.278	-0.294	0.315	-0.187
	HN	0.497	0.325	0.191	0.539	0.352
-2 dB	ECN	0.764	0.758	0.678	0.771	0.748
	EMG	0.072	0.125	0.068	0.383	0.264
	WN	0.030	-0.326	-0.374	0.101	-0.261
	HN	0.218	0.185	0.030	0.265	0.145
2 dB	ECN	0.248	0.303	0.233	0.311	0.294
	EMG	-0.010	-0.020	-0.086	0.095	0.029
	WN	-0.060	-0.228	-0.340	0.014	-0.224
	HN	0.036	0.042	-0.101	0.072	-0.004
5 dB	ECN	0.074	0.104	0.042	0.110	0.095
	EMG	-0.054	-0.053	-0.155	0.013	-0.032
	WN	-0.090	-0.203	-0.372	-0.032	-0.219
	HN	-0.031	-0.025	-0.146	-0.012	-0.064
10 dB	ECN	-0.010	-0.007	-0.062	-0.005	-0.018
	EMG	-0.055	-0.066	-0.171	-0.038	-0.062
	WN	-0.067	-0.078	-0.209	-0.043	-0.133
	HN	-0.048	-0.053	-0.154	-0.040	-0.077