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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 _TONALESTIMATOR_
#define _TONALESTIMATOR_
#include <valarray>
#include <numeric>
#include <algorithm>
#include <iostream>
class ChromaVector : public std::valarray<double>
{
public:
ChromaVector(size_t uSize = 12) : std::valarray<double>()
{ resize(uSize, 0.0f); }
virtual ~ChromaVector() {};
void printDebug()
{
for (int i = 0; i < size(); i++)
{
std::cout << (*this)[i] << ";";
}
std::cout << std::endl;
}
void normalizeL1()
{
// normalize the chroma vector (L1 norm)
double dSum = 0.0;
for (size_t i = 0; i < 12; (dSum += std::abs((*this)[i++]))) ;
for (size_t i = 0; i < 12; dSum > 0.0000001?((*this)[i] /= dSum):(*this)[i]=0.0, i++) ;
}
void clear()
{
for (size_t i = 0; i < 12; ++i) (*this)[i] = 0.0;
}
};
class TCSVector : public std::valarray<double>
{
public:
TCSVector() : std::valarray<double>()
{ resize(6, 0.0f); }
virtual ~TCSVector() {};
void printDebug()
{
for (int i = 0; i < size(); i++)
{
std::cout << (*this)[i] << ";";
}
std::cout << std::endl;
}
double magnitude() const
{
double dMag = 0.0;
for (size_t i = 0; i < 6; i++)
{
dMag += std::pow((*this)[i], 2.0);
}
return std::sqrt(dMag);
}
};
class TonalEstimator
{
public:
TonalEstimator();
virtual ~TonalEstimator();
TCSVector transform2TCS(const ChromaVector& rVector);
protected:
std::valarray< std::valarray<double> > m_Basis;
};
#endif // _TONALESTIMATOR_
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