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| Current Path : /proc/self/root/usr/include/CLAM/ |
| Current File : //proc/self/root/usr/include/CLAM/SpectralPeakDescriptors.hxx |
/*
* Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
* UNIVERSITAT POMPEU FABRA
*
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __SpectralPeakDescriptors_H__
#define __SpectralPeakDescriptors_H__
#include <typeinfo>
#include "Descriptor.hxx"
/*
* This class holds Descriptors computed from SpectralPeak data
*
*
*/
namespace CLAM {
class SpectralPeakArray;
class SpectralPeakDescriptors : public Descriptor {
public:
DYNAMIC_TYPE_USING_INTERFACE (SpectralPeakDescriptors, 10, Descriptor);
/**
* The average amplitude (arithmetic mean) of the spectral peaks.
* It is computed on linear scale.
* Range: [0, 100]
*/
DYN_ATTRIBUTE (0, public, TData, MagnitudeMean);
/**
* The center of gravity of the spectral peaks.
* Only the frequency value (in Hz) of the centroid is computed.
* Amplitude and frequency scale are linear for this operation.
*
* - Units: Hz
* - Range: [0, Nyquist frequency]
* - Singularities
* - Returns zero for empty peak array.
* @todo Peaks at 0Hz are not counted
*/
DYN_ATTRIBUTE (1, public, TData, HarmonicCentroid);
/**
* Spectral deviation of magnitude components from spectral envelope.
* Descriptor is a MPEG7 LLD (HarmonicSpectralDeviation), see
* ISO/IEC JTC 1/SC 29 N WXYZ from 2001-03-14.
*
* The local spectral envelopes (SE) are computed on linear scale as
* the mean of three consecutive peak amplitudes.
* For the first and the last peak only two peak amplitudes are used.
*
* The spectral HarmonicDeviation is then defined
* as
* \f[ \sum_{i=1}^{Num. of Peaks}
* \left| PeakAmplitude(i) - SE(i)\right|
* \over
* {\sum_{i=1}^{Num. of Peaks}PeakAmplitude(i)} \f]
* ,where SE and PeakAmplitude were converted to logarithmic scale.
* Returns zero for array with less than 4 peaks.
*/
DYN_ATTRIBUTE (2, public, TData, HarmonicDeviation);
/**
* Energy ratio of the first harmonic to the energy of all peaks.
*
* Returns zero for empty peak array.
*/
DYN_ATTRIBUTE (3, public, TData, FirstTristimulus);
/**
* Energy ratio of the second, third and forth harmonic to the energy of all peaks.
* Returns zero for array with less than 2 peaks.
*/
DYN_ATTRIBUTE (4, public, TData, SecondTristimulus);
/**
* Energy ratio of all the harmonics starting from the fifth to the energy of all peaks.
* Returns zero for array with less than 5 peaks.
*/
DYN_ATTRIBUTE (5, public, TData, ThirdTristimulus);
/**
* Energy ratio of odd harmonics (excluding the fundamental) to
* the energy of all peaks.
*
* Returns zero for array with less than 3 peaks.
*/
DYN_ATTRIBUTE (6, public, TData, OddHarmonics);
/**
* Energy ratio of even harmonics to the energy of all peaks.
*
* @pre The peaks represents an ordered list of harmonics starting
* at the fundamental.
*
* Returns zero for array with less than 2 peaks.
*/
DYN_ATTRIBUTE (7, public, TData, EvenHarmonics);
/**
* Ratio of "OddHarmonics" to "EvenHarmonics".
* Returns zero if both values are zero.
*
* @pre The peaks represents an ordered list of harmonics starting
* at the fundamental.
*
* Range: [0, 1]
*
* Formula: \f[ \frac{OddHarmonics}{EvenHarmonics+OddHarmonics} \f]
* @see SpectralPeakDescriptors::DYN_ATTRIBUTE(OddHarmonics)
* @see SpectralPeakDescriptors::DYN_ATTRIBUTE(EvenHarmonics)
*/
DYN_ATTRIBUTE (8, public, TData, OddToEvenRatio);
DYN_ATTRIBUTE (9,public, Array<TData>, HPCP); // Harmonic Pitch Class Profile
public:
SpectralPeakDescriptors(SpectralPeakArray* pSpectralPeakArray);
SpectralPeakDescriptors(TData initVal);
const SpectralPeakArray* GetpSpectralPeakArray() const;
void SetpSpectralPeakArray(SpectralPeakArray* pSpectralPeakArray);
void ConcreteCompute();
private:
void DefaultInit();
void CopyInit(const SpectralPeakDescriptors & copied);
TData ComputeCentroid();
TData ComputeFirstTristimulus();
TData ComputeSecondTristimulus();
TData ComputeThirdTristimulus();
TData ComputeHarmonicDeviation();
TData ComputeOddHarmonics();
TData ComputeEvenHarmonics();
TData ComputeOddToEvenRatio();
private:
const SpectralPeakArray* mpSpectralPeakArray;
CrossCenterOfGravity<1> mCentroid;
};
SpectralPeakDescriptors operator / (const SpectralPeakDescriptors& a,TData div) ;
SpectralPeakDescriptors operator * (const SpectralPeakDescriptors& a,TData mult) ;
SpectralPeakDescriptors operator * (const SpectralPeakDescriptors& a,const SpectralPeakDescriptors& b) ;
SpectralPeakDescriptors operator + (const SpectralPeakDescriptors& a,const SpectralPeakDescriptors& b) ;
template<>
inline SpectralPeakDescriptors CLAM_max (const SpectralPeakDescriptors& a,const SpectralPeakDescriptors& b)
{
SpectralPeakDescriptors tmpD(a);
if (a.HasMagnitudeMean() && b.HasMagnitudeMean())
{
if(b.GetMagnitudeMean()>a.GetMagnitudeMean())
tmpD.SetMagnitudeMean(b.GetMagnitudeMean());
}
if (a.HasHarmonicCentroid() && b.HasHarmonicCentroid())
{
if(b.GetHarmonicCentroid()>a.GetHarmonicCentroid())
tmpD.SetHarmonicCentroid(b.GetHarmonicCentroid());
}
if (a.HasFirstTristimulus() && b.HasFirstTristimulus())
{
if(b.GetFirstTristimulus()>a.GetFirstTristimulus())
tmpD.SetFirstTristimulus(b.GetFirstTristimulus());
}
if (a.HasSecondTristimulus() && b.HasSecondTristimulus())
{
if(b.GetSecondTristimulus()>a.GetSecondTristimulus())
tmpD.SetSecondTristimulus(b.GetSecondTristimulus());
}
if (a.HasThirdTristimulus() && b.HasThirdTristimulus())
{
if(b.GetThirdTristimulus()>a.GetThirdTristimulus())
tmpD.SetThirdTristimulus(b.GetThirdTristimulus());
}
if (a.HasHarmonicDeviation() && b.HasHarmonicDeviation())
{
if(b.GetHarmonicDeviation()>a.GetHarmonicDeviation())
tmpD.SetHarmonicDeviation(b.GetHarmonicDeviation());
}
if (a.HasOddHarmonics() && b.HasOddHarmonics())
{
if(b.GetOddHarmonics()>a.GetOddHarmonics())
tmpD.SetOddHarmonics(b.GetOddHarmonics());
}
if (a.HasEvenHarmonics() && b.HasEvenHarmonics())
{
if(b.GetEvenHarmonics()>a.GetEvenHarmonics())
tmpD.SetEvenHarmonics(b.GetEvenHarmonics());
}
if (a.HasOddToEvenRatio() && b.HasOddToEvenRatio())
{
if(b.GetOddToEvenRatio()>a.GetOddToEvenRatio())
tmpD.SetOddToEvenRatio(b.GetOddToEvenRatio());
}
return tmpD;
}
template<>
inline SpectralPeakDescriptors CLAM_min (const SpectralPeakDescriptors& a,const SpectralPeakDescriptors& b)
{
SpectralPeakDescriptors tmpD(a);
if (a.HasMagnitudeMean() && b.HasMagnitudeMean())
{
if(b.GetMagnitudeMean()<a.GetMagnitudeMean())
tmpD.SetMagnitudeMean(b.GetMagnitudeMean());
}
if (a.HasHarmonicCentroid() && b.HasHarmonicCentroid())
{
if(b.GetHarmonicCentroid()<a.GetHarmonicCentroid())
tmpD.SetHarmonicCentroid(b.GetHarmonicCentroid());
}
if (a.HasFirstTristimulus() && b.HasFirstTristimulus())
{
if(b.GetFirstTristimulus()<a.GetFirstTristimulus())
tmpD.SetFirstTristimulus(b.GetFirstTristimulus());
}
if (a.HasSecondTristimulus() && b.HasSecondTristimulus())
{
if(b.GetSecondTristimulus()<a.GetSecondTristimulus())
tmpD.SetSecondTristimulus(b.GetSecondTristimulus());
}
if (a.HasThirdTristimulus() && b.HasThirdTristimulus())
{
if(b.GetThirdTristimulus()<a.GetThirdTristimulus())
tmpD.SetThirdTristimulus(b.GetThirdTristimulus());
}
if (a.HasHarmonicDeviation() && b.HasHarmonicDeviation())
{
if(b.GetHarmonicDeviation()<a.GetHarmonicDeviation())
tmpD.SetHarmonicDeviation(b.GetHarmonicDeviation());
}
if (a.HasOddHarmonics() && b.HasOddHarmonics())
{
if(b.GetOddHarmonics()<a.GetOddHarmonics())
tmpD.SetOddHarmonics(b.GetOddHarmonics());
}
if (a.HasEvenHarmonics() && b.HasEvenHarmonics())
{
if(b.GetEvenHarmonics()<a.GetEvenHarmonics())
tmpD.SetEvenHarmonics(b.GetEvenHarmonics());
}
if (a.HasOddToEvenRatio() && b.HasOddToEvenRatio())
{
if(b.GetOddToEvenRatio()<a.GetOddToEvenRatio())
tmpD.SetOddToEvenRatio(b.GetOddToEvenRatio());
}
return tmpD;
}
}
#endif /* __SpectralPeakDescriptors_H__ */
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