/usr/include/SndObj/Lp.h is in libsndobj-dev 2.6.7+ds1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 |
////////////////////////////////////////////////////////////////////////
// This file is part of the SndObj library
//
// 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
//
// Copyright (c)Victor Lazzarini, 1997-2004
// See License.txt for a disclaimer of all warranties
// and licensing information
////////////////////////////////////////////////
// Low-pass resonant filter
//
// VL, 2002
////////////////////////////////////////////////
#ifndef _Lp_H
#define _Lp_H
#include "Reson.h"
class Lp: public Reson {
protected:
void inline SetLPparam(float fr, float bw);
public:
// constructors / destructor
Lp();
Lp(float fr, float BW, SndObj* inObj, SndObj* inputfreq = 0,
SndObj* inputBW = 0, int vecisize=DEF_VECSIZE, float sr=DEF_SR);
~Lp();
void SetSr(float sr){
m_sr = sr;
SetLPparam(m_fr, m_bw);
}
int Set(char* mess, float value);
short DoProcess();
};
void Lp::SetLPparam(float fr, float bw){
float Q = fr/bw;
m_b1 = (100./Q*sqrt(fr))-1.;
m_b2 = 100./fr;
m_a = 1 + m_b1 + m_b2;
}
#endif
|