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function [sr,repos] = comp_filterbankreassign(s,tgrad,fgrad,a,cfreq)
Lc = cellfun(@numel,s);
M = numel(s);
oneover2 = 1/2;
sr = cell(M,1);
cfreq2 = zeros(M,1);
for mm = 1:M
sr{mm} = zeros(Lc(mm),1);
cfreq2(mm) = cfreq(mm) - floor(cfreq(mm)*oneover2)*2;
end
if nargout>1
chan_pos = [0;cumsum(Lc)];
repos = cell(sum(cellfun(@numel,sr)),1);
end
%-*- texinfo -*-
%@deftypefn {Function} comp_filterbankreassign
%@verbatim
%% Compute reassigned frequencies and times
%@end verbatim
%@strong{Url}: @url{http://ltfat.github.io/doc/comp/comp_filterbankreassign.html}
%@end deftypefn
% Copyright (C) 2005-2016 Peter L. Soendergaard <peter@sonderport.dk>.
% This file is part of LTFAT version 2.3.1
%
% 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/>.
for mm = M:-1:1
tgradIdx = zeros(Lc(mm),1);
fgradIdx = zeros(Lc(mm),1);
cfreqm = cfreq2(mm);
for jj = 1:Lc(mm)
tgradmjj = tgrad{mm}(jj) + cfreqm;
oldtgrad = 10;
tgradIdx(jj) = 0;
if tgrad{mm}(jj) > 0
pos = mm;
for ii = mm:M
pos = ii;
tmptgrad = cfreq2(ii) - tgradmjj;
if tmptgrad >= 0
if abs(tmptgrad) < abs(oldtgrad)
tgradIdx(jj) = pos;
else
tgradIdx(jj) = pos-1;
end
break;
end
oldtgrad = tmptgrad;
end
if pos == M && tmptgrad < 0
for ii = 1:mm
pos = ii;
tmptgrad = cfreq2(ii) - tgradmjj + 2;
if tmptgrad >= 0
if abs(tmptgrad) < abs(oldtgrad)
tgradIdx(jj) = pos;
else
tgradIdx(jj) = pos-1;
end
break;
end
oldtgrad = tmptgrad;
end
end
if tgradIdx(jj) < 1
tgradIdx(jj) = M;
end
else
pos = mm;
for ii = mm:-1:1
pos = ii;
tmptgrad = cfreq2(ii) - tgradmjj;
if tmptgrad <= 0
if abs(tmptgrad) < abs(oldtgrad)
tgradIdx(jj) = pos;
else
tgradIdx(jj) = pos+1;
end
break;
end
oldtgrad = tmptgrad;
end
if pos == 1 && tmptgrad > 0
for ii = M:-1:mm
pos = ii;
tmptgrad = cfreq2(ii) - tgradmjj - 2;
if tmptgrad <= 0
if abs(tmptgrad) < abs(oldtgrad)
tgradIdx(jj) = pos;
else
tgradIdx(jj) = pos+1;
end
break;
end
oldtgrad = tmptgrad;
end
end
if tgradIdx(jj) >= M+1
tgradIdx(jj) = 1;
end
end
end
for jj = 1:Lc(mm)
tmpIdx = tgradIdx(jj);
fgradIdx(jj) = mod(round((fgrad{mm}(jj) + a(mm)*(jj-1))./a(tmpIdx)),Lc(tmpIdx))+1;
end
for jj=1:Lc(mm)
sr{tgradIdx(jj)}(fgradIdx(jj)) = sr{tgradIdx(jj)}(fgradIdx(jj))+s{mm}(jj);
end
if nargout>1
for jj=1:Lc(mm)
repos{chan_pos(tgradIdx(jj))+fgradIdx(jj)}(end+1,1) = chan_pos(mm)+jj;
end
end
end
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