... number of fea-tures, m1 and m2,andD21 and D22are the means and vari-ances vectors of features vectors p1,k, k = 1, 2, , Mp and p2,k, k = 1,2, , Mp. Mpdenotes the total number of ... picture of the performance of the HOS,RMS 1, and RMS 2 techniques when fs= 256 × 60 Hz and N= 256, 128, 64, 32, and 16. These used frame lengths cor-respondto1,1/2,1/4,1/8 ,and1 /16cyclesofthefunda-mental ... (n)u(n)Featureextraction Detection algorithmYes NoDetected?Start and endpoints detection Analyze nextframeFigure 1: Block diagram of the detection technique of abnormalconditions.more than one cycle of the...