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YinUtil.h
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YinUtil.h
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
pYIN - A fundamental frequency estimator for monophonic audio
Centre for Digital Music, Queen Mary, University of London.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef _YINUTIL_H_
#define _YINUTIL_H_
#include <cmath>
#include <iostream>
#include <vector>
#include <exception>
#include "vamp-sdk/FFT.h"
using std::vector;
class YinUtil
{
public:
YinUtil(int yinBufferSize);
~YinUtil();
double sumSquare(const double *in, int startInd, int endInd);
void difference(const double *in, double *yinBuffer);
void fastDifference(const double *in, double *yinBuffer);
void slowDifference(const double *in, double *yinBuffer);
void cumulativeDifference(double *yinBuffer);
int absoluteThreshold(const double *yinBuffer, double thresh);
vector<double> yinProb(const double *yinBuffer, int prior,
int minTau = 0, int maxTau = 0);
double parabolicInterpolation(const double *yinBuffer, int tau);
private:
const int m_yinBufferSize;
Vamp::FFTReal m_fft;
};
#endif