/**
*
* Funf: Open Sensing Framework
* Copyright (C) 2010-2011 Nadav Aharony, Wei Pan, Alex Pentland.
* Acknowledgments: Alan Gardner
* Contact: nadav@media.mit.edu
*
* This file is part of Funf.
*
* Funf is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* Funf 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Funf. If not, see <http://www.gnu.org/licenses/>.
*
*/
package edu.mit.media.funf.math;
public class Window
{
public double[] window;
public int n;
public Window(int windowSize)
{
n = windowSize;
// Make a Hamming window
window = new double[n];
for(int i = 0; i < n; i++)
{
window[i] = 0.54 - 0.46*Math.cos(2*Math.PI*(double)i/((double)n-1));
}
}
public void applyWindow(double[] buffer)
{
for (int i = 0; i < n; i ++)
{
buffer[i] *= window[i];
}
}
}