Fig. 3.
2T-EMD quadrivariate decomposition of the signal s41: (a) original signal (dark) and its 2T-EMD local mean (gray), and (b) exact (dashed line) and estimated (plain line) IMFs projected on the four main axis W, X, Y and Z.
2T-EMD quadrivariate decomposition of the signal s41: (a) original signal (dark) and its 2T-EMD local mean (gray), and (b) exact (dashed line) and estimated (plain line) IMFs projected on the four main axis W, X, Y and Z.