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/*!
* \file
* \brief Frequency filter test program
* \author Simon Wood and Adam Piatyszek
*
* -------------------------------------------------------------------------
*
* Copyright (C) 1995-2010 (see AUTHORS file for a list of contributors)
*
* This file is part of IT++ - a C++ library of mathematical, signal
* processing, speech processing, and communications classes and functions.
*
* IT++ 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.
*
* IT++ 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 IT++. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#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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