43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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pYIN - A fundamental frequency estimator for monophonic audio
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Centre for Digital Music, Queen Mary, University of London.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _YINUTIL_H_
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#define _YINUTIL_H_
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#include "vamp-sdk/FFT.h"
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#include "MeanFilter.h"
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#include <cmath>
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#include <iostream>
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#include <vector>
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#include <exception>
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using std::vector;
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class YinUtil
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{
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public:
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static double sumSquare(const double *in, const size_t startInd, const size_t endInd);
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static void difference(const double *in, double *yinBuffer, const size_t yinBufferSize);
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static void fastDifference(const double *in, double *yinBuffer, const size_t yinBufferSize);
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static void slowDifference(const double *in, double *yinBuffer, const size_t yinBufferSize);
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static void cumulativeDifference(double *yinBuffer, const size_t yinBufferSize);
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static int absoluteThreshold(const double *yinBuffer, const size_t yinBufferSize, const double thresh);
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static vector<double> yinProb(const double *yinBuffer, const size_t prior, const size_t yinBufferSize, size_t minTau = 0, size_t maxTau = 0);
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static double parabolicInterpolation(const double *yinBuffer, const size_t tau,
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const size_t yinBufferSize);
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};
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#endif
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