Average & Total RMS Power in Adobe Auditiion

Hello all,

when I measure the average rms of an audio signal in Matlab by below equations:

P = sqrt(mean(sum(x.^2)));
PdB = 20*log10(P);

This value comes to be similar to Total RMS Power in adobe instead of average. can somebody please explain what is the way adobe measures the avearge RMS power.

Many thanks,
HASPER