Table 1.

Signal-to-noise ratio after variational mode decomposition and improved variational mode decomposition processing of acquired noisy real electrocardiogram data

ECG signals	SNR (dB)
	IVMD	Traditional VMD
N1	76	42
N2	77	35
N3	70	40
N4	83	36
N5	60	37
N6	68	32
N7	65	40
N8	70	27
N9	65	41
N10	66	35

ECG – Electrocardiogram; SNR – Signal-to-noise ratio; VMD – Variational mode decomposition; IVMD – Improved VMD