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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.
*/
#include "MonoNote.h"
#include <vector>
#include <cstdio>
#include <cmath>
#include <complex>
using std::vector;
using std::pair;
MonoNote::MonoNote() :
hmm()
{
}
MonoNote::~MonoNote()
{
}
const vector<MonoNote::FrameOutput>
MonoNote::process(const vector<vector<pair<double, double> > > pitchProb)
{
vector<vector<double> > obsProb;
for (size_t iFrame = 0; iFrame < pitchProb.size(); ++iFrame)
{
obsProb.push_back(hmm.calculateObsProb(pitchProb[iFrame]));
}
vector<double> *scale = new vector<double>(pitchProb.size());
vector<MonoNote::FrameOutput> out;
vector<int> path = hmm.decodeViterbi(obsProb, scale);
for (size_t iFrame = 0; iFrame < path.size(); ++iFrame)
{
double currPitch = -1;
int stateKind = 0;
currPitch = hmm.par.minPitch + (path[iFrame]/hmm.par.nSPP) * 1.0/hmm.par.nPPS;
stateKind = (path[iFrame]) % hmm.par.nSPP + 1;
out.push_back(FrameOutput(iFrame, currPitch, stateKind));
// std::cerr << path[iFrame] << " -- "<< pitchProb[iFrame][0].first << " -- "<< currPitch << " -- " << stateKind << std::endl;
}
delete scale;
return(out);
}
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