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/*!
* \file
* \brief Frequency filter test program
* \author Simon Wood and Adam Piatyszek
*
* -------------------------------------------------------------------------
*
* IT++ - C++ library of mathematical, signal processing, speech processing,
* and communications classes and functions
*
* Copyright (C) 1995-2008 (see AUTHORS file for a list of contributors)
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* -------------------------------------------------------------------------
*/
#include <itpp/itsignal.h>
using namespace itpp;
using namespace std;
int main()
{
vec b = "1 2 3 4";
vec x(20);
x.zeros();
x(0) = 1;
// Define a filter object for doubles
Freq_Filt<double> FF(b,x.length());
// Filter the data
vec y = FF.filter(x);
// Check the FFT and block sizes that were used
int fftsize = FF.get_fft_size();
int blksize = FF.get_blk_size();
cout << fftsize << endl;
cout << blksize << endl;
cout << round_to_zero(y) << endl;
// Test streaming mode
x = linspace(0,10,100);
Freq_Filt<double> FFS(b,x.length());
vec y1 = FFS.filter(x(0,49),1);
vec y2 = FFS.filter(x(50,99),1);
cout << round_to_zero(concat(y1,y2)) << endl;
return 0;
}
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