A Segmental Approach with SWT Technique for Denoising the EOG Signal

Table 4

RMSE values obtained between reference EOG signal and denoised EOG signals by different equal segments approach using RLS adaptive filtering technique.

S. number	Segment of the signal (samples)	EOG5 dB; SNR = 39.04 dB	EOG10 dB; SNR = 33.92 dB	EOG15 dB; SNR = 29.02 dB	EOG20 dB; SNR = 24.12 dB	EOG25 dB; SNR = 19.01 dB
		RMSE (µV)	RMSE (µV)	RMSE (µV)	RMSE (µV)	RMSE (µV)
2	513:1024	34.47	34.48	34.39	34.60	34.45
3	1025:1536	34.45	34.39	34.35	34.60	34.65
4	1537:2048	34.42	34.43	34.49	34.38	34.60
5	2049:2560	47.94	47.92	48.07	48.10	47.87
6	2561:3072	13.97	13.99	14.07	14.00	14.45
7	3073:3584	24.27	33.29	33.09	33.37	33.01
8	3585:4096	38.03	38.03	38.08	37.97	38.31
9	4097:4608	50.17	50.43	50.28	35.88	50.60
10	4609:5120	18.06	18.04	18.24	18.01	18.45
11	5121:5632	39.40	39.41	39.75	40.14	39.33
12	5633:6144	48.21	48.09	48.39	48.80	48.37
13	6145:6656	41.69	41.89	41.43	41.85	41.92
14	6657:7168	48.86	19.08	49.26	49.52	49.54
15	7169:7680	22.41	22.33	22.40	22.59	23.02
16	7681:8192	34.11	34.12	34.10	33.49	33.95
Maximum value		50.17	50.43	50.28	49.52	50.60
Minimum value		13.97	13.99	14.07	14.00	14.45
Mean (µV)		35.36	34.00	36.02	35.15	36.17
Standard deviation (µV)		11.46	11.29	11.11	10.51	11.03