Marsyas
0.6.0-alpha
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00001 /* 00002 ** Copyright (C) 1998-2006 George Tzanetakis <gtzan@cs.uvic.ca> 00003 ** 00004 ** This program is free software; you can redistribute it and/or modify 00005 ** it under the terms of the GNU General Public License as published by 00006 ** the Free Software Foundation; either version 2 of the License, or 00007 ** (at your option) any later version. 00008 ** 00009 ** This program is distributed in the hope that it will be useful, 00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 ** GNU General Public License for more details. 00013 ** 00014 ** You should have received a copy of the GNU General Public License 00015 ** along with this program; if not, write to the Free Software 00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 */ 00018 00019 #ifndef MARSYAS_AIMGAMMATONE_H 00020 #define MARSYAS_AIMGAMMATONE_H 00021 00022 #include <marsyas/system/MarSystem.h> 00023 00024 // sness - TODO - Eventually make these realvecs. However, in the 00025 // existing code there is quite a bit of stuff that involves STL 00026 // methods, so I thought it would be safer to use STL for now. 00027 #include <vector> 00028 00029 namespace Marsyas 00030 { 00054 class marsyas_EXPORT AimGammatone: public MarSystem 00055 { 00056 private: 00057 void myUpdate(MarControlPtr sender); 00058 00059 // Parameters 00060 MarControlPtr ctrl_num_channels_; 00061 MarControlPtr ctrl_max_frequency_; 00062 MarControlPtr ctrl_min_frequency_; 00063 00064 // Filter coefficients 00065 std::vector<std::vector<double> > b1_; 00066 std::vector<std::vector<double> > b2_; 00067 std::vector<std::vector<double> > b3_; 00068 std::vector<std::vector<double> > b4_; 00069 std::vector<std::vector<double> > a_; 00070 00071 std::vector<std::vector<double> > state_1_; 00072 std::vector<std::vector<double> > state_2_; 00073 std::vector<std::vector<double> > state_3_; 00074 std::vector<std::vector<double> > state_4_; 00075 00076 std::vector<double> centre_frequencies_; 00077 00078 // Reset all internal state variables to their initial values 00079 void ResetInternal(); 00080 00081 // Prepare the module 00082 bool InitializeInternal(); 00083 00084 // Does the MarSystem need initialization? 00085 bool is_initialized; 00086 00087 // What changes cause it to need initialization? 00088 mrs_natural initialized_num_channels; 00089 mrs_real initialized_min_frequency; 00090 mrs_real initialized_max_frequency; 00091 mrs_real initialized_israte; 00092 00093 // Does the MarSystem need reset? 00094 bool is_reset; 00095 00096 // What changes cause it to need a reset? 00097 mrs_natural reset_num_channels; 00098 00099 public: 00100 AimGammatone(std::string name); 00101 AimGammatone(const AimGammatone& a); 00102 00103 ~AimGammatone(); 00104 MarSystem* clone() const; 00105 void addControls(); 00106 00107 void myProcess(realvec& in, realvec& out); 00108 }; 00109 00110 }//namespace marsyas 00111 00112 #endif