www.gusucode.com > 语音信号处理工具箱 - Voicebox源码程序 > Voicebox\lpczz2ar.m

    function ar=lpczz2ar(zz)
%LPCZZ2AR Convert z-place poles to ar coefficients AR=(ZZ)
% The complex poles must occur in complex conjugate pairs
% but the order is unimportant.


%      Copyright (C) Mike Brookes 1997
%
%      Last modified Tue May 12 16:16:23 1998
%
%   VOICEBOX home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
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%   This program is free software; you can redistribute it and/or modify
%   it under the terms of the GNU General Public License as published by
%   the Free Software Foundation; either version 2 of the License, or
%   (at your option) any later version.
%
%   This program is distributed in the hope that it will be useful,
%   but WITHOUT ANY WARRANTY; without even the implied warranty of
%   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%   GNU General Public License for more details.
%
%   You can obtain a copy of the GNU General Public License from
%   ftp://prep.ai.mit.edu/pub/gnu/COPYING-2.0 or by writing to
%   Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

[nf,p]=size(zz);
ar=zeros(nf,p+1);
for k=1:nf
  ar(k,:)=real(poly(zz(k,:)));
end