how to extract the energy ratio of details and approximation coefficient ????

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afef
afef on 12 Mar 2017
Commented: John Navarro on 11 May 2020
hello i use a decomposition at level 4 of EEG signal using db4 and i need to extract the energy ratio of details and approximation coefficients to use it as one of the features tha will be the input for my classifier.

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