Chris@43: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
c@5: 
Chris@43: /*
Chris@43:    Vamp Tempogram Plugin
Chris@43:    Carl Bussey, Centre for Digital Music, Queen Mary University of London
Chris@43:    Copyright 2014 Queen Mary University of London.
Chris@43:     
Chris@43:    This program is free software; you can redistribute it and/or
Chris@43:    modify it under the terms of the GNU General Public License as
Chris@43:    published by the Free Software Foundation; either version 2 of the
Chris@43:    License, or (at your option) any later version.  See the file
Chris@43:    COPYING included with this distribution for more information.
Chris@43: */
c@11: 
c@5: #ifndef __Tempogram__NoveltyCurve__
c@5: #define __Tempogram__NoveltyCurve__
c@5: 
c@5: #include <iostream>
c@7: #include <cmath>
c@7: #include <vector>
c@7: #include <iostream>
c@7: #include "FIRFilter.h"
c@7: #include "WindowFunction.h"
c@7: #include <cassert>
c@14: #include "SpectrogramProcessor.h"
c@5: 
c@14: class NoveltyCurveProcessor{
c@5:     float m_samplingFrequency;
c@20:     size_t m_fftLength;
c@20:     size_t m_blockSize;
c@5:     int m_compressionConstant;
c@20:     size_t m_numberOfBands;
c@13:     int * m_pBandBoundaries;
c@13:     float * m_pBandSum;
c@5:     
c@5:     void initialise();
c@5:     void cleanup();
c@13:     void subtractLocalAverage(std::vector<float> &noveltyCurve, const size_t &smoothLength) const;
c@22:     void smoothedDifferentiator(SpectrogramTransposed &spectrogram, const size_t &smoothLength) const;
c@22:     void halfWaveRectify(SpectrogramTransposed &spectrogram) const;
c@5:     
c@5: public:
c@5:     
c@22:     NoveltyCurveProcessor(const float &samplingFrequency, const size_t &fftLength, const size_t &compressionConstant);
c@14:     ~NoveltyCurveProcessor();
c@22:     std::vector<float> spectrogramToNoveltyCurve(const Spectrogram &spectrogram) const;
c@5: };
c@5: 
c@5: #endif /* defined(__Tempogram__NoveltyCurve__) */