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Fig. 1

image

Histograms (black) showing the normalised modal energy NEm fitted by distribution (5) (red) for several IMFs obtained with EMD from 2000 independent samples of the synthetic white (α = 0, left column) and coloured (α = 1.5, right column) noises. Each noise sample contains N = 500 data points. All samples were normalised for their total energy to be unity.

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