/usr/include/CLAM/CepstralTransform.hxx is in libclam-dev 1.4.0-7.
This file is owned by root:root, with mode 0o644.
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* Copyright (c) 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 __CEPSTRALTRANSFORM__
#define __CEPSTRALTRANSFORM__
#include "Processing.hxx"
#include "MelSpectrum.hxx"
#include "MelCepstrum.hxx"
#include "Array.hxx"
#include "InPort.hxx"
#include "OutPort.hxx"
namespace CLAM
{
class CepstralTransformConfig : public ProcessingConfig
{
public:
DYNAMIC_TYPE_USING_INTERFACE( CepstralTransformConfig, 3, ProcessingConfig );
/** Number of input samples **/
DYN_ATTRIBUTE( 0, public, TSize, NumMelCoefficients );
/** Number of output samples **/
DYN_ATTRIBUTE( 1, public, TSize, NumCepstrumCoefficients );
/** Use base 10 or natural logarithm for computation (false by default) **/
DYN_ATTRIBUTE( 2, public, bool, UseBase10 );
protected:
void DefaultInit();
};
/**
* This class performs the cepstral transform on a set of filterbank
* coefficients in order to obtain the corresponding Mel Frequency
* Cepstral Coefficients (MFCC). It is designed to be compliant with
* similar functionality found in the speech processing software HTK
* v3.2.1.
*
* No liftering of the coefficients is performed after transformation.
*
* @see CLAM::MelFilterBank
*/
class CepstralTransform : public Processing
{
public:
CepstralTransform( );
CepstralTransform( const CepstralTransformConfig& cfg );
bool Do();
/**
* Performs the cepstral transform producing the specified number
* of MFCC coefficients.
*
* @param melCoeffs Input filterbank coefficients
* @param cepsCoeffs Output MFCC coefficients
*
* @return True is computation was successfull, false otherwise
*/
bool Do( const MelSpectrum& melCoeffs, MelCepstrum& cepsCoeffs );
const ProcessingConfig& GetConfig() const
{
return mConfig;
}
const char* GetClassName() const
{
return "CepstralTransform";
}
protected:
bool ConcreteConfigure( const ProcessingConfig& cfg );
bool ConcreteStart();
private:
CepstralTransformConfig mConfig;
DataArray mLogBuffer;
InPort<MelSpectrum> mIn;
OutPort<MelCepstrum> mOut;
};
}
#endif // CepstralTransform.hxx
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