ovrlpsav.m

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

function [y]=ovrlpsav(x,h,N)
% Overlap - Save method of block convolution
% ----------------
% [y]=ovrlpsav(x,h,N)
% y=output sequence
% x=input sequence
% h=impulse response
% N=block length
%
Lenx=length(x);
M=length(h);
M1=M-1;L=N-M1;
h=[h zeros(1,N-M)];
%
x=[zeros(1,M1),x,zeros(1,N-1)];
K=floor(Lenx+M1-1)/(L);
Y=zeros(K+1,N);
% convolution with successive blocks
for k=0:K
    xk=x(k*L+1:k*L+N);
    Y(k+1,:)=circonvt(xk,h,N);
end
Y=Y(:,M:N)';
y=(Y(:))';