param_invtdir.m

用于模拟时变非平稳的ARMA过程

function Cnm= param_invtdir(TDIRnm, TDIRn0)
% function Cnm= param_invtdir(TDIRnm, TDIRn0)
%   This file is part of the TFPM toolbox v1.0 (c)
%   [e-mail] and underlies the GPL.
% 

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if(0)% TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST
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clear;tfpm;
MAR  =   0;
LAR  =   0;
MMA  =   2;
LMA  =   1;
N    =  64;
re_im= 'i';
mo_no= 'n';
tfpm_file_gen;
%-------------
Cml= Bml;
Cnm0= param_expand(Cml, N);
[TDIRnm, TDIRn0]= param_tdir(Cnm0);
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end;% TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST
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% Dimensions:
N= size(TDIRnm, 1);
M= size(TDIRnm, 2);

% TDFR:
Cnm= [];
for n= 0:N-1
   p= poly(TDIRnm(n+1, :));
   Cnm= [Cnm; p];
end;

Cnm= Cnm.*(TDIRn0*ones(1, M+1));
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if(0)% TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST
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energy(Cnm-Cnm0)
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end;% TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST
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