circevod.m

the file contain many matlab signal source code and many example .

function [xec,xoc]=circevod(x)
% signal decomposition into circular-even and circular-odd parts
% --------------------
% [xec,xoc]=circecod(x)
%
if any (imag(x)~=0)
    error('x is not a real sequence')
end
N=length(x)
n=0:(N-1)
mod(-n,N)
xec=0.5*(x+x(mod(-n,N)+1))
xoc=0.5*(x-x(mod(-n,N)+1))