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view extra/tsa/inst/ac2rc.m @ 12580:b6eace8bc216 octave-forge
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author | schloegl |
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date | Thu, 02 Apr 2015 10:00:34 +0000 |
parents | 430712382527 |
children |
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function [RC,efinal] = ac2rc(AC); % converts the autocorrelation function into reflection coefficients % [RC,r0] = ac2rc(r) % % see also ACOVF ACORF AR2RC RC2AR DURLEV AC2POLY, POLY2RC, RC2POLY, RC2AC, AC2RC, POLY2AC % % $Id$ % Copyright (C) 1998-2002,2008 by Alois Schloegl <alois.schloegl@gmail.com> % % 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 3 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 should have received a copy of the GNU General Public License % along with this program. If not, see <http://www.gnu.org/licenses/>. if all(size(AC))>1, fprintf(2,'Error AC2RC: "r" must be a vector\n'); return; end; mfilename='AC2RC'; if ~exist('durlev','file') fprintf(2,'Error %s: DURLEV.M not found. \n Download TSA toolbox from http://pub.ist.ac.at/~schloegl/matlab/tsa/\n',mfilename); return; end; [AR,RC,PE] = durlev(AC(:).'); RC=-RC; efinal=AC(1);