110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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* ClusterMeltSegmenter.h
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*
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* Created by Mark Levy on 23/03/2006.
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* Copyright 2006 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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#include <vector>
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#include "segment.h"
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#include "Segmenter.h"
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#include "hmm/hmm.h"
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#include "base/Window.h"
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using std::vector;
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class Decimator;
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class ConstantQ;
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class MFCC;
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class FFTReal;
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class ClusterMeltSegmenterParams
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// defaults are sensible for 11025Hz with 0.2 second hopsize
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{
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public:
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ClusterMeltSegmenterParams() :
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featureType(FEATURE_TYPE_CONSTQ),
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hopSize(0.2),
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windowSize(0.6),
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fmin(62),
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fmax(16000),
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nbins(8),
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ncomponents(20),
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nHMMStates(40),
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nclusters(10),
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histogramLength(15),
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neighbourhoodLimit(20) { }
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feature_types featureType;
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double hopSize; // in secs
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double windowSize; // in secs
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int fmin;
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int fmax;
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int nbins;
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int ncomponents;
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int nHMMStates;
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int nclusters;
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int histogramLength;
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int neighbourhoodLimit;
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};
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class ClusterMeltSegmenter : public Segmenter
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{
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public:
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ClusterMeltSegmenter(ClusterMeltSegmenterParams params);
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virtual ~ClusterMeltSegmenter();
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virtual void initialise(int samplerate);
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virtual int getWindowsize();
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virtual int getHopsize();
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virtual void extractFeatures(const double* samples, int nsamples);
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void setFeatures(const vector<vector<double> >& f); // provide the features yourself
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virtual void segment(); // segment into default number of segment-types
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void segment(int m); // segment into m segment-types
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int getNSegmentTypes() { return nclusters; }
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protected:
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void makeSegmentation(int* q, int len);
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void extractFeaturesConstQ(const double *, int);
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void extractFeaturesMFCC(const double *, int);
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Window<double> *window;
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FFTReal *fft;
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ConstantQ* constq;
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MFCC* mfcc;
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model_t* model; // the HMM
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int* q; // the decoded HMM state sequence
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vector<vector<double> > histograms;
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feature_types featureType;
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double hopSize; // in seconds
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double windowSize; // in seconds
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// constant-Q parameters
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int fmin;
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int fmax;
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int nbins;
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int ncoeff;
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// PCA parameters
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int ncomponents;
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// HMM parameters
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int nHMMStates;
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// clustering parameters
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int nclusters;
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int histogramLength;
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int neighbourhoodLimit;
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Decimator *decimator;
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};
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