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reverb.h

/*
    Copyright (C) 2003 Fons Adriaensen <fons.adriaensen@skynet.be>
    
    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 __REVERB_H
#define __REVERB_H


class Delelm
{
private:

    friend class Reverb;
    
    void init (int size, float fb);
    void fini (void);
    void set_t60mf (float tmf);
    void set_t60lo (float tlo, float _wlo);
    void set_t60hi (float thi, float chi);
    void print (void);
    float process (float x);

    int        _i;
    int        _size;
    float     *_line;
    float      _fb;
    float      _gmf;
    float      _glo;
    float      _wlo;
    float      _whi;
    float      _slo;
    float      _shi;    
};



class Reverb
{
public:
    
    void init (float rate);
    void fini (void);
    void process (int n, float gain, float *R, float *W, float *X, float *Y, float *Z);

    void set_delay (float del);
    void set_t60mf (float tmf);
    void set_t60lo (float tlo, float flo);
    void set_t60hi (float thi, float fhi);

private:

    void print (void);
    float  *_line;
    int     _size;
    int     _idel;
    int     _i;
    Delelm  _delm [16];
    float   _rate;
    float   _gain;
    float   _tmf;
    float   _tlo;
    float   _thi;
    float   _flo;
    float   _fhi;
    float   _x0, _x1, _x2, _x3, _x4, _x5, _x6, _x7;
    float   _z;

    static int   _sizes [16];
    static float _feedb [16]; 
};


#endif

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