106 lines
2.0 KiB
C++
106 lines
2.0 KiB
C++
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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QM DSP Library
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Centre for Digital Music, Queen Mary, University of London.
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This file copyright 2006 Martin Gasser.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _TONALESTIMATOR_
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#define _TONALESTIMATOR_
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#include <valarray>
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#include <numeric>
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#include <algorithm>
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#include <iostream>
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class ChromaVector : public std::valarray<double>
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{
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public:
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ChromaVector(size_t uSize = 12) : std::valarray<double>()
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{ resize(uSize, 0.0f); }
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virtual ~ChromaVector() {};
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void printDebug()
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{
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for (int i = 0; i < size(); i++)
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{
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std::cout << (*this)[i] << ";";
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}
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std::cout << std::endl;
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}
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void normalizeL1()
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{
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// normalize the chroma vector (L1 norm)
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double dSum = 0.0;
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for (size_t i = 0; i < 12; (dSum += std::abs((*this)[i++]))) ;
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for (size_t i = 0; i < 12; dSum > 0.0000001?((*this)[i] /= dSum):(*this)[i]=0.0, i++) ;
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}
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void clear()
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{
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for (size_t i = 0; i < 12; ++i) (*this)[i] = 0.0;
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}
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};
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class TCSVector : public std::valarray<double>
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{
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public:
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TCSVector() : std::valarray<double>()
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{ resize(6, 0.0f); }
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virtual ~TCSVector() {};
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void printDebug()
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{
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for (int i = 0; i < size(); i++)
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{
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std::cout << (*this)[i] << ";";
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}
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std::cout << std::endl;
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}
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double magnitude() const
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{
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double dMag = 0.0;
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for (size_t i = 0; i < 6; i++)
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{
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dMag += std::pow((*this)[i], 2.0);
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}
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return std::sqrt(dMag);
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}
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};
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class TonalEstimator
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{
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public:
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TonalEstimator();
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virtual ~TonalEstimator();
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TCSVector transform2TCS(const ChromaVector& rVector);
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protected:
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std::valarray< std::valarray<double> > m_Basis;
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};
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#endif // _TONALESTIMATOR_
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