Marsyas
0.6.0-alpha
|
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 BICCHANGEDETECTOR_H 00020 #define BICCHANGEDETECTOR_H 00021 00022 #include <marsyas/system/MarSystem.h> 00023 #include <marsyas/QGMMModel.h> 00024 #include <time.h> 00025 00026 namespace Marsyas 00027 { 00041 class Memory; 00042 00043 class BICchangeDetector: public MarSystem 00044 { 00045 private: 00046 mrs_natural segFrames_; //number of frames per audio segment 00047 mrs_natural minSegFrames_; //minimum nr of frames to avoid ill-cov matrices 00048 mrs_natural segHop_; 00049 mrs_natural nfeats_; 00050 mrs_natural BICTick_; // number of ticks so far 00051 mrs_real hopSeconds_; // number of millis per hop 00052 mrs_real prev_change_time_; 00053 00054 00055 realvec C1_; 00056 realvec C2_; 00057 realvec C3_; 00058 realvec C4_; 00059 mrs_real dist12_; 00060 mrs_real dist34_; 00061 mrs_real BICdist_; 00062 00063 //dynamic thresholding parameters 00064 mrs_natural nrPrevDists_; 00065 Memory* prevDists_; 00066 realvec pdists_; 00067 // the index of the latest distance in Memory prevDists_ 00068 mrs_natural pIndex_; 00069 mrs_real dynThres_; 00070 // dynamic threshold parameter 00071 mrs_real alpha1_; 00072 00073 //BIC parameter 00074 mrs_real lambda_; 00075 00076 //quasi-GMM model 00077 QGMMModel QGMMmodel_; 00078 00079 MarControlPtr ctrl_reset_; 00080 MarControlPtr ctrl_prevDists_; 00081 MarControlPtr ctrl_alpha1_; 00082 MarControlPtr ctrl_lambda_; 00083 MarControlPtr ctrl_hopMS_; // number of millis per hop 00084 00085 void addControls(); 00086 void myUpdate(MarControlPtr sender); 00087 00088 public: 00089 BICchangeDetector(std::string name); 00090 BICchangeDetector(const BICchangeDetector& a); 00091 ~BICchangeDetector(); 00092 MarSystem* clone() const; 00093 00094 void myProcess(realvec& in, realvec& out); 00095 }; 00096 00097 }//namespace Marsyas 00098 00099 #endif