ChangeDetectionFunction.h

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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
 
/*
    QM DSP Library
 
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Martin Gasser.
 
    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.  See the file
    COPYING included with this distribution for more information.
*/
 
#ifndef _CHANGEDETECTIONFUNCTION_
#define _CHANGEDETECTIONFUNCTION_
 
//#define DEBUG_CHANGE_DETECTION_FUNCTION 1
 
#include "TCSgram.h"
 
#include <valarray>
using std::valarray;
 
typedef valarray<double> ChangeDistance;
 
struct ChangeDFConfig
{
        int smoothingWidth;
};
 
class ChangeDetectionFunction
{
public:
        ChangeDetectionFunction(ChangeDFConfig);
        ~ChangeDetectionFunction();
        ChangeDistance process(const TCSGram& rTCSGram);
private:
        void setFilterWidth(const int iWidth);
        
private:
        valarray<double> m_vaGaussian;
        double m_dFilterSigma;
        int m_iFilterWidth;
};
 
#endif // _CHANGDETECTIONFUNCTION_