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/*
SweepVF.h
Copyright 2004-5 Tim Goetze <tim@quitte.de>
http://quitte.de/dsp/
SweepVFI, a lorenz fractal modulating the cutoff frequency of a
state-variable (ladder) filter.
SweepVFII, the same with Q being modulated by a second fractal.
*/
/*
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., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA or point your web browser to http://www.gnu.org.
*/
#ifndef _SWEEP_VF_H_
#define _SWEEP_VF_H_
#include "dsp/SVF.h"
#include "dsp/Lorenz.h"
#include "dsp/Roessler.h"
class SweepVFI
{
public:
double fs;
/* svf parameters */
d_sample f, Q;
/* needs to be a power of two */
enum {
BLOCK_SIZE = 32
};
DSP::StackedSVF<1,2> svf;
DSP::Lorenz lorenz;
d_sample normal;
template <sample_func_t F>
void one_cycle (int frames);
public:
static PortInfo port_info [];
d_sample * ports [9];
d_sample adding_gain;
void init (double _fs);
void activate();
void run (int n)
{
one_cycle<store_func> (n);
}
void run_adding (int n)
{
one_cycle<adding_func> (n);
}
};
class SweepVFII
{
public:
double fs;
/* svf parameters */
d_sample f, Q;
/* needs to be a power of two */
enum {
BLOCK_SIZE = 32
};
DSP::StackedSVF<1,2> svf;
DSP::Lorenz lorenz1;
DSP::Lorenz lorenz2;
d_sample normal;
template <sample_func_t F>
void one_cycle (int frames);
public:
static PortInfo port_info [];
d_sample * ports [13];
d_sample adding_gain;
void init (double _fs);
void activate();
void run (int n)
{
one_cycle<store_func> (n);
}
void run_adding (int n)
{
one_cycle<adding_func> (n);
}
};
#endif /* _SWEEP_VF_H_ */
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