dfreq.m

里面囊括了基于matlab滤波器设计的各种.m文件

 
%f = dfreq(h, omega)
% Computation the frequency response of h in the point
% omega. The result is the same as FREQZ but the method
% is different. See also SFREQ and SFREQ1
%

function f = dfreq(h,omega)

 N = length(h);
 for I = 1:N
   e(I) = exp(-j*(I-1)*omega);
 end
 e = e(:);
 h = h(:)';
 f = h*e;

%END