Table 7. Average correlation coefficient of 6 synthetic ECGs (Syn00-Syn05).

Original SNR	Noise Type	Denoising Method
		IEMD -ATD	UT-H	UT-S	Cust-H	Cust-S
-5 dB	ECN	0.5708	0.5652	0.5475	0.5660	0.5635
	EMG	0.7662	0.6067	0.5795	0.7133	0.7484
	WN	0.8317	0.5834	0.5586	0.7733	0.7380
	HN	0.7715	0.7169	0.6252	0.7555	0.7293
-2 dB	ECN	0.7024	0.7001	0.6878	0.7004	0.6988
	EMG	0.8894	0.7978	0.7793	0.8237	0.8564
	WN	0.9286	0.7598	0.7136	0.8688	0.8437
	HN	0.8600	0.8360	0.7684	0.8484	0.8344
2 dB	ECN	0.8571	0.8468	0.8435	0.8466	0.8463
	EMG	0.9574	0.9104	0.8656	0.9142	0.9345
	WN	0.9712	0.8386	0.7586	0.9278	0.9096
	HN	0.9423	0.9073	0.8705	0.9139	0.9075
5 dB	ECN	0.9217	0.9038	0.9010	0.9038	0.9036
	EMG	0.9750	0.9426	0.9005	0.9481	0.9582
	WN	0.9826	0.9423	0.8872	0.9628	0.9518
	HN	0.9673	0.9347	0.9042	0.9406	0.9366
10 dB	ECN	0.9728	0.9604	0.9594	0.9606	0.9604
	EMG	0.9915	0.9791	0.9664	0.9798	0.9816
	WN	0.9932	0.9662	0.9250	0.9773	0.9701
	HN	0.9888	0.9795	0.9684	0.9819	0.9803