Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.



Re: Please correct the energy
Posted:
Oct 27, 2010 1:04 PM


"Dinesh Bhati" <bhatidinesh@gmail.com> wrote in message <ia8cs1$n7e$1@fred.mathworks.com>... > Hi, > > Can any one correct the energy Emid. It should also be same as Ex and Ey and equal to one.Note for DB1 you will get the correct Emid. > > clear > clc > str='db2' > x=randint(1,10,[1 10]); > x=x/norm(x(:)); > Ex=sum(x.^2) > [A,H]=dwt(x,str); > Emid=sum(A.^2)+sum(H.^2) > y=idwt(A,H,str); > Ey=sum(y.^2) > > Dinesh
May I know what is the problem with the Emid. As per parsevals theorem it must be equal to one.



