/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014,2015 Dennis Sheirer
*
* 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/>
******************************************************************************/
package dsp.filter.dc;
public class DCRemovalFilter
{
protected float mAverage;
protected float mRatio;
public DCRemovalFilter( float ratio )
{
mRatio = ratio;
}
public void reset()
{
mAverage = 0.0f;
}
public float filter( float sample )
{
float filtered = sample - mAverage;
mAverage += mRatio * filtered;
return filtered;
}
}