?? ar2poly.m
字號(hào):
function [A] = ar2poly(A);
% converts autoregressive parameters into AR polymials
% Multiple polynomials can be converted.
% function [A] = ar2poly(AR);
%
% INPUT:
% AR AR parameters, each row represents one set of AR parameters
%
% OUTPUT
% A denominator polynom
%
%
% see also ACOVF ACORF DURLEV RC2AR FILTER FREQZ ZPLANE
%
% REFERENCES:
% P.J. Brockwell and R. A. Davis "Time Series: Theory and Methods", 2nd ed. Springer, 1991.
% S. Haykin "Adaptive Filter Theory" 3rd ed. Prentice Hall, 1996.
% M.B. Priestley "Spectral Analysis and Time Series" Academic Press, 1981.
% W.S. Wei "Time Series Analysis" Addison Wesley, 1990.
% Version 2.90 last revision 10.04.2002
% Copyright (c) 1996-2002 by Alois Schloegl
% e-mail: a.schloegl@ieee.org
% This library is free software; you can redistribute it and/or
% modify it under the terms of the GNU Library General Public
% License as published by the Free Software Foundation; either
% Version 2 of the License, or (at your option) any later version.
%
% This library 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
% Library General Public License for more details.
%
% You should have received a copy of the GNU Library General Public
% License along with this library; if not, write to the
% Free Software Foundation, Inc., 59 Temple Place - Suite 330,
% Boston, MA 02111-1307, USA.
% Inititialization
[lr,lc]=size(A);
A = [ones(size(A,1),1),-A];
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