dfdds.m

来自「AFD - Advanced Filter Design using MATLA」· M 代码 · 共 38 行

function ds = dfdds(speck)

% dfdds.m  ADFD design space
%          ds = {ds(nmin), ds(nmin+1), ..., ds(nmax)}
%
% 16:59  17/2/99
%
%   Authors: Dejan V. Tosic, Miroslav D. Lutovac, 1999.02.08
%                 [e-mail]
%                 [e-mail]
%
%   Copyright (c) 1999 by Tosic & Lutovac
%   $Revision: 1.0 $  $Date: 1999/02/08 03:07:42 $
%
%   References:
%        Miroslav D. Lutovac, Dejan V. Tosic, Brian L. Evans
%           Advanced Filter Design for Signal Processing
%                   Using MATLAB and Mathematica
%  calls:
%% dfdnell.m, dfdncheb.m, dfddsi.m

Fp = speck(1);
Fs = speck(2);
Kp = speck(3);
Ks = speck(4);

nmin = dfdnell(Fp,Fs,Kp,Ks);
ncheb = dfdncheb(Fp,Fs,Kp,Ks);
nmax = min([2*nmin,ncheb-1]);

if nmax < nmin
   nmax = nmin;
end

for n = nmin:nmax
  ds(n-nmin+1,:) = dfddsi(n,speck);
end