latcfilt.m

来自「the file contain many matlab signal sour」· M 代码 · 共 17 行

function [y]=latcfilt(K,x)
% LATTICE form realization of FIR filters
% ----------------------
% y=latcfilt(K,x)
% y=output sequence
% K=LATTECE filter(reflection)coefficients array
% x=input sequence
%
Nx=length(x)-1;
x=K(1)*x;
M=length(K)-1;K=K(2:M+1);
fg=[x;[0 x(1:Nx)]];
for m=1:M
    fg=[1,K(m);K(m),1]*fg;
    fg(2,:)=[0 fg(2,1:Nx)];
end
y=fg(1,:);