How can i find the centroid of the wavelet coefficients from each frame of the audio signal?

Hi.,i ve to find the centroid of the wavelet coefficients on each frame of the audio signal. i've applied wavedec to decompose the signal into 5 level.,from that i obtained ca5,ca1,ca2,ca3,ca4,ca5.I have to calculate the energy and centroid of the wavelet coefficients on each frame.,How can i do it?Is there anyone know about this?