calculating log mean energies

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nkumar 2014-1-12

I am working on speech recognisation ,I have extracted features mfcc,now i have to extract medc Mel Energy Spectrum Dynamic Coefficients

the last step of mfcc is log and dct ,in medc it is replaced by logarathimic mean,

i have 20x2534 matrix,kindly tell how to calculate log value

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