qm-dsp
1.8
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ 00002 00003 /* 00004 QM DSP Library 00005 00006 Centre for Digital Music, Queen Mary, University of London. 00007 This file copyright 2006 Martin Gasser. 00008 00009 This program is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU General Public License as 00011 published by the Free Software Foundation; either version 2 of the 00012 License, or (at your option) any later version. See the file 00013 COPYING included with this distribution for more information. 00014 */ 00015 00016 #ifndef _CHANGEDETECTIONFUNCTION_ 00017 #define _CHANGEDETECTIONFUNCTION_ 00018 00019 //#define DEBUG_CHANGE_DETECTION_FUNCTION 1 00020 00021 #include "TCSgram.h" 00022 00023 #include <valarray> 00024 using std::valarray; 00025 00026 typedef valarray<double> ChangeDistance; 00027 00028 struct ChangeDFConfig 00029 { 00030 int smoothingWidth; 00031 }; 00032 00033 class ChangeDetectionFunction 00034 { 00035 public: 00036 ChangeDetectionFunction(ChangeDFConfig); 00037 ~ChangeDetectionFunction(); 00038 ChangeDistance process(const TCSGram& rTCSGram); 00039 private: 00040 void setFilterWidth(const int iWidth); 00041 00042 private: 00043 valarray<double> m_vaGaussian; 00044 double m_dFilterSigma; 00045 int m_iFilterWidth; 00046 }; 00047 00048 #endif // _CHANGDETECTIONFUNCTION_