conv_tp.m

用DSP译文版课本的程序,相信对学DSP的同学会有所帮助

function [y,H]=conv_tp(h,x)
% Linear Convolution using Toeplitz Matrix
% ----------------------------------------
% [y,H] = conv_tp(h,x)
% y = output sequence in column vector form
% H = Toeplitz matrix corresponding to sequence h so that y = Hx
% h = Impulse response sequence in column vector form
% x = input sequence in column vector form
%
Nx = length(x); Nh = length(h);
hc=[h; zeros(Nx-1, 1)];
hr=[h(1),zeros(1,Nx-1)];
H=toeplitz(hc,hr);
y=H*x;