%DEMO_TAKANEN2013 Demo of the binaural model by Takanen, Santala and Pulkki
%
% This script generates a figure showing the result of the binaural
% auditory model by Takanen, Santala and Pulkki (2013) for sound source
% distributions consisting of different number of sound sources simulated
% with HRTFs to emit incoherent samples of pink noise. The resulting
% activity map shows that the activation spreads as the width of the
% distribution increases, which is in accordance with the results of the
% psychoacoustical experiment by Santala and Pulkki (2011).
%
% Optionally, pre-computed cochlear model outputs can be applied to
% significantly reduce the required computation time. The pre-computed
% cochlear model outputs can be obtained from the authors.
%
% Figure 1: Output of the audiory model
%
% The activity map.
%
% See also: takanen2013
%
% References:
% O. Santala and V. Pulkki. Directional perception of distributed sound
% sources. J. Acoust. Soc. Am., 129:1522 -- 1530, 2011.
%
% M. Takanen, O. Santala, and V. Pulkki. Visualization of functional
% count-comparison-based binaural auditory model output. Hearing
% research, 309:147--163, 2014. PMID: 24513586.
%
% M. Takanen, O. Santala, and V. Pulkki. Perceptually encoded signals and
% their assessment. In J. Blauert, editor, The technology of binaural
% listening. Springer, 2013.
%
%
% Url: http://amtoolbox.sourceforge.net/data/amt-test/htdocs/amt-0.10.0/doc/demos/demo_takanen2013.php
% Copyright (C) 2009-2020 Piotr Majdak and the AMT team.
% This file is part of Auditory Modeling Toolbox (AMT) version 0.10.0
%
% 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/>.
% AUTHOR: Marko Takanen, Olli Santala, Ville Pulkki
%
% COPYRIGHT (C) 2013 Aalto University
% School of Electrical Engineering
% Department of Signal Processing and Acoustics
% Espoo, Finland
%% Starting of the script
% Use pre-computed cochlear model outputs, otherwise set preComp=0;
preComp = 1;
compType = 1;
printFigs = 0;
printMap = 1;
%if the user wishes to use pre-computed cochlea model outputs to reduce the
%required computation time
if preComp ==1
filename='demo_cochlea.mat';
data=amt_load('takanen2013',filename);
output= takanen2013(data.tests.cochlea,data.tests.fs,compType,printFigs,printMap);
title(data.tests.scenario);
set(gca,'Ytick',data.tests.ytickPos);set(gca,'YtickLabel',data.tests.ytickLab(end:-1:1));
ylabel(data.tests.ylab);
%otherwise, binaural input signals are used
else
filename='demo_binsig.mat';
data=amt_load('takanen2013',filename);
output= takanen2013(data.tests.insig,data.tests.fs,compType,printFigs,printMap);
title(data.tests.scenario);
set(gca,'Ytick',data.tests.ytickPos);set(gca,'YtickLabel',data.tests.ytickLab(end:-1:1));
ylabel(data.tests.ylab);
end