Table 3.

The calculated energy spectral density integral under the signal and noise peaks, as well as the SNR before and after the de-noising process by using the DWA-LSM and DWA-GD.

Recorded Signal and Noise Peaks			F1	F2	F3	H1	H2	H3	H4	H5	N2
Energy spectral density integral under peaks (10−6 J) *	Before de-noising		3.3	22	5.56	0.38	5.11	15.3	3.09	0.6	6.62
	After DWA-LSM		3.52	22	5.53	0.39	4.8	15.3	3.08	0.58	1.02
	After DWA-GD		3.62	22	5.53	0.4	4.5	15.3	3.08	0.57	0.14
SNR	Before de-noising		0.5	3.32	0.83	0.06	0.77	2.3	0.46	0.09	/
	After DWA-LSM		3.45	21.56	5.42	0.38	4.71	15	3.02	0.57
	After DWA-GD		25.85	157.1	39.5	2.85	32.1	109.3	22	4.07

* We use energy spectral density because NMR signal is a transient signal which only has spectral energy.