/home/marsyas/marsyas/src/marsyas/SimulMaskingFft.h

/*
** Copyright (C) 1998-2010 George Tzanetakis <gtzan@cs.uvic.ca>
**  
** 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 MARSYAS_SimulMaskingFft_H
#define MARSYAS_SimulMaskingFft_H

#include "MarSystem.h"  

namespace Marsyas
{
    class SimulMaskingFft: public MarSystem
    {
    private: 
        //Add specific controls needed by this MarSystem.
        void addControls();
        MarControlPtr ctrl_SimulMaskingFft_;
        void myUpdate(MarControlPtr sender);

        struct FrequencyBands_t
        {
            mrs_real    fLowFreqBound,
                fUpFreqBound,
                fMidFreq,
                fLowBarkBound,
                fUpBarkBound,
                fMidBark;
        };

        void GetBandLevels (FrequencyBands_t *pFrequencyValues, mrs_realvec &bandLevels, mrs_bool bDezibel);
        void CalcSpreading (mrs_realvec &bandLevels, mrs_realvec &result);
        void ComputeTables ();
        void ComputeDifference (mrs_realvec &out, mrs_realvec &in, mrs_natural t);

        mrs_real    normFactor_,
                    audiosrate_,
                    barkRes_;
        mrs_natural numBands_;
        mrs_realvec processBuff_,
                    barkSpec_,
                    excPattern_,
                    helpBuff_,
                    outerEar_,
                    maskingThresh_,
                    intNoise_,
                    slopeSpread_,
                    normSpread_;
        FrequencyBands_t    *freqBounds_;
    public:
        SimulMaskingFft(std::string name);
        SimulMaskingFft(const SimulMaskingFft& a);
        ~SimulMaskingFft();
        MarSystem* clone() const;  

        void myProcess(realvec& in, realvec& out);
    };

}//namespace Marsyas

#endif

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