00001 /* 00002 00003 Base class for FFT based multirate filters, header 00004 Copyright (C) 2000-2002 Jussi Laako 00005 00006 This program is free software; you can redistribute it and/or modify 00007 it under the terms of the GNU General Public License as published by 00008 the Free Software Foundation; either version 2 of the License, or 00009 (at your option) any later version. 00010 00011 This program is distributed in the hope that it will be useful, 00012 but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 GNU General Public License for more details. 00015 00016 You should have received a copy of the GNU General Public License 00017 along with this program; if not, write to the Free Software 00018 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00019 00020 */ 00021 00022 00023 #include "dsp/Filter.hh" 00024 00025 00026 #ifndef FFTMULTIRATE_HH 00027 #define FFTMULTIRATE_HH 00028 00029 #define FFTMULTIRATE_RIPPLERATIO 144.49f 00030 #define FFTMULTIRATE_OVERLAP 0.75f 00031 #define FFTMULTIRATE_DELTAOMEGA 0.1f 00032 00033 00040 class clFFTMultiRate 00041 { 00042 protected: 00043 bool bInitialized; 00044 long lFactor; 00045 long lFilterSize; 00046 clFilter Filter; 00047 public: 00048 clFFTMultiRate (); 00049 ~clFFTMultiRate (); 00062 bool Initialize (long, long, const float *, bool = false); 00064 bool Initialize (long, long, const double *, bool = false); 00068 void Uninitialize (); 00069 }; 00070 00071 #endif 00072