function [s,fs]=bat()
%BAT  Load the 'bat' test signal
%   Usage:  s=bat;
%
%   BAT loads the 'bat' signal. It is a 400 samples long recording
%   of a bat chirp sampled with a sampling period of 7 microseconds.
%   This gives a sampling rate of 143 kHz.
%
%   [sig,fs]=BAT additionally returns the sampling frequency fs.
%
%   The signal can be obtained from
%   http://dsp.rice.edu/software/bat-echolocation-chirp
%
%   Please acknowledge use of this data in publications as follows:
%
%     The author wishes to thank Curtis Condon, Ken White, and Al Feng of
%     the Beckman Institute of the University of Illinois for the bat data
%     and for permission to use it in this paper.
%
%   Examples:
%   ---------
%
%   Plot of 'bat' in the time-domain:
%
%     plot((1:400)/143000,bat);
%     xlabel('Time (seconds)');
%     ylabel('Amplitude');
%
%   Plot of 'bat' in the frequency-domain:
%
%     plotfftreal(fftreal(bat),143000,90);
%
%   Plot of 'bat' in the time-frequency-domain:
%
%     sgram(bat,143000,90);
%
%   See also:  batmask
%
%   Url: http://ltfat.github.io/doc/signals/bat.html

% Copyright (C) 2005-2015 Peter L. Soendergaard <peter@sonderport.dk>.
% This file is part of LTFAT version 2.1.1
%
% 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/>.

%   AUTHOR : Peter L. Søndergaard
%   TESTING: TEST_SIGNALS
%   REFERENCE: OK
  
if nargin>0
  error('This function does not take input arguments.')
end;

f=mfilename('fullpath');

s=load('-ascii',[f,'.asc']);
fs=143000;

