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function test_failed=test_constructphase
%-*- texinfo -*-
%@deftypefn {Function} test_constructphase
%@verbatim
%TEST_CONSTRUCTPHASE
%
%@end verbatim
%@strong{Url}: @url{http://ltfat.github.io/doc/testing/test_constructphase.html}
%@end deftypefn
% Copyright (C) 2005-2016 Peter L. Soendergaard <peter@sonderport.dk>.
% This file is part of LTFAT version 2.2.0
%
% 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/>.
test_failed = 0;
disp(' =================== TEST_CONSTRUCTPHASE ====================== ');
forig = greasy;
g = 'gauss';
a = 16;
M = 1024;
tolcell = {1e-10,[1e-1 1e-10],[1e-1 1e-3 1e-10]};
Warray = [1, 3];
for W=Warray
f = repmat(forig,1,W);
f = bsxfun(@times,f,[1:W]);
global LTFAT_TEST_TYPE;
if strcmpi(LTFAT_TEST_TYPE,'single')
f = cast(f,'single');
end
for pcId = 1:2
% Complex case
phaseconv = getat({'timeinv','freqinv'},pcId);
for tId = 1:numel(tolcell)
tol = getat(tolcell,tId);
tolstr = sprintf('%.2e, ',tol);
tolstr = tolstr(1:end-2);
tra = @(f) dgt(f,g,a,M,phaseconv);
itra = @(c) idgt(c,{'dual',g},a,phaseconv);
proj = @(c) tra(itra(c));
c = tra(f);
s = abs(c);
% Normal call
chat = constructphase(s,g,a,tol,phaseconv);
E = comperr(s,proj(chat));
fail = '';
if E>-19
test_failed = test_failed + 1;
fail = 'FAILED';
end
fprintf('CONSTRUCTPHASE %s tol=[%s] W=%d E=%.2f %s\n',phaseconv,tolstr,W,E,fail);
% Known part
mask = zeros(size(s));
mask(:,1:floor(size(s,2)/2),:) = 1;
chat = constructphase(s,g,a,tol,mask,angle(c),phaseconv);
E = comperr(s,proj(chat));
chat2 = constructphase(c,g,a,tol,mask,phaseconv);
E2 = comperr(s,proj(chat2));
fail = '';
if E>-19 || abs(E-E2) > 0.1
test_failed = test_failed + 1;
fail = 'FAILED';
end
fprintf('CONSTRUCTPHASE MASK %s tol=[%s] W=%d E=%.2f %s\n',phaseconv,tolstr,W,E,fail);
tra = @(f) dgtreal(f,g,a,M,phaseconv);
itra = @(c) idgtreal(c,{'dual',g},a,M,phaseconv);
proj = @(c) tra(itra(c));
c = tra(f);
s = abs(c);
chat = constructphasereal(s,g,a,M,tol,phaseconv);
E = comperr(s,proj(chat));
fail = '';
if E>-18
test_failed = test_failed + 1;
fail = 'FAILED';
end
fprintf('CONSTRUCTPHASEREAL %s tol=[%s] W=%d E=%.2f %s\n',phaseconv,tolstr,W,E,fail);
% Known part
mask = zeros(size(s));
mask(:,1:floor(size(s,2)/2),:) = 1;
chat = constructphasereal(s,g,a,M,tol,mask,angle(c),phaseconv);
E = comperr(s,proj(chat));
chat2 = constructphasereal(c,g,a,M,tol,mask,phaseconv);
E2 = comperr(s,proj(chat2));
fail = '';
if E>-19 || abs(E-E2) > 0.1
test_failed = test_failed + 1;
fail = 'FAILED';
end
fprintf('CONSTRUCTPHASEREAL MASK %s tol=[%s] W=%d E=%.2f %s\n',phaseconv,tolstr,W,E,fail);
end
end
end
function el = getat(collection,id)
if iscell(collection)
el = collection{id};
else
el = collection(id);
end
function E = comperr(s,c)
E = 20*log10(norm(abs(s(:))-abs(c(:)),'fro')/norm(abs(s(:)),'fro'));
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