evenodd.m

西交大刘树棠写的《数字信号处理》那本书的所有源代码

function [xe,xo,m]=evenodd(x,n)
%real signal divided into even and odd
%------------------------------------
%[xe,xo,m]=evenodd(x,n)
%

[x1,m1]=sigfold(x,n);
[xe,m]=sigadd(0.5*x,n,0.5*x1,m1);
[xo,m]=sigadd(0.5*x,n,-0.5*x1,m1);