parfiltr.m

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

function parfiltr(C,B,A,x);
% PARALLEL form realization of IIR filters
% ----------------------------
% [y]=parfiltr(C,B,A,x);
% y=output sequence 
% C=polynomial (FIR) part when M>=N
% B=K by 3 matrix of real coefficients containing bk's
% A=K by 3 matrix of real coefficients containing ak's
% x=input sequence
% 
[K,L]=size(B);
N=length(x);
w=zeros(K+1,N);
w(1,:)=filter(C,1,x);
for i=1:K
    w(i+1,:)=filter(B(i,:),A(i,:),x);
end 
y=sum(w);