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1 //
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2 // NoveltyCurveProcessor.h
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3 // Tempogram
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4 //
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5 // Created by Carl Bussey on 10/07/2014.
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6 // Copyright (c) 2014 Carl Bussey. All rights reserved.
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7 //
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8
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9 // Don't new delete objects
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10
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11 #ifndef __Tempogram__NoveltyCurve__
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12 #define __Tempogram__NoveltyCurve__
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13
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14 #include <iostream>
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15 #include <cmath>
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16 #include <vector>
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17 #include <iostream>
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18 #include "FIRFilter.h"
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19 #include "WindowFunction.h"
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20 #include <cassert>
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21 #include "SpectrogramProcessor.h"
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22
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23 class NoveltyCurveProcessor{
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24 float m_samplingFrequency;
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25 size_t m_fftLength;
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26 size_t m_blockSize;
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27 int m_compressionConstant;
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28 size_t m_numberOfBands;
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29 int * m_pBandBoundaries;
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30 float * m_pBandSum;
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31
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32 void initialise();
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33 void cleanup();
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34 void subtractLocalAverage(std::vector<float> &noveltyCurve, const size_t &smoothLength) const;
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35 void smoothedDifferentiator(SpectrogramTransposed &spectrogram, const size_t &smoothLength) const;
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36 void halfWaveRectify(SpectrogramTransposed &spectrogram) const;
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37
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38 public:
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39
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40 NoveltyCurveProcessor(const float &samplingFrequency, const size_t &fftLength, const size_t &compressionConstant);
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41 ~NoveltyCurveProcessor();
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42 std::vector<float> spectrogramToNoveltyCurve(const Spectrogram &spectrogram) const;
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43 };
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44
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45 #endif /* defined(__Tempogram__NoveltyCurve__) */
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