Mercurial > hg > pyin
view YinUtil.h @ 130:080fe18f5ebf fixedlag
refactored Viterbi
* perhaps I even discovered a bug (probablity sum was not reset for every frame)
author | Matthias Mauch <mail@matthiasmauch.net> |
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date | Fri, 03 Jul 2015 12:22:44 +0100 |
parents | 60eb8771d340 |
children | 7cbf40306c10 |
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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 "vamp-sdk/FFT.h" #include "MeanFilter.h" #include <cmath> #include <iostream> #include <vector> #include <exception> using std::vector; class YinUtil { public: static double sumSquare(const double *in, const size_t startInd, const size_t endInd); static void difference(const double *in, double *yinBuffer, const size_t yinBufferSize); static void fastDifference(const double *in, double *yinBuffer, const size_t yinBufferSize); static void slowDifference(const double *in, double *yinBuffer, const size_t yinBufferSize); static void cumulativeDifference(double *yinBuffer, const size_t yinBufferSize); static int absoluteThreshold(const double *yinBuffer, const size_t yinBufferSize, const double thresh); static vector<double> yinProb(const double *yinBuffer, const size_t prior, const size_t yinBufferSize, size_t minTau = 0, size_t maxTau = 0); static double parabolicInterpolation(const double *yinBuffer, const size_t tau, const size_t yinBufferSize); }; #endif