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/*
Copyright (C) 2006-2009 Fons Adriaensen <fons@kokkinizita.net>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __NFFILT_H
#define __NFFILT_H
class NF_filt1
{
public:
NF_filt1 (void) {}
~NF_filt1 (void) {}
void init (float w);
void init (NF_filt1& F);
void reset (void) { _z1 = 0; }
void process (int n, float *ip, float *op, float gain);
void process_add (int n, float *ip, float *op, float gain);
private:
float _g;
float _d1;
float _z1;
};
class NF_filt2
{
public:
NF_filt2 (void) {}
~NF_filt2 (void) {}
void init (float w);
void init (NF_filt2& F);
void reset (void) { _z1 = _z2 = 0; }
void process (int n, float *ip, float *op, float gain);
void process_add (int n, float *ip, float *op, float gain);
private:
float _g;
float _d1, _d2;
float _z1, _z2;
};
class NF_filt3
{
public:
NF_filt3 (void) {}
~NF_filt3 (void) {}
void init (float w);
void init (NF_filt3& F);
void reset (void) { _z1 = _z2 = _z3 = 0; }
void process (int n, float *ip, float *op, float gain);
void process_add (int n, float *ip, float *op, float gain);
private:
float _g;
float _d1, _d2, _d3;
float _z1, _z2, _z3;
};
#endif
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