Logo Search packages:      
Sourcecode: caps version File versions  Download package

SweepVF.h

/*
      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_ */

Generated by  Doxygen 1.6.0   Back to index