annotate dsp/segmentation/cluster_segmenter.h @ 321:f1e6be2de9a5

A threshold (delta) is added in the peak picking parameters structure (PPickParams). It is used as an offset when computing the smoothed detection function. A constructor for the structure PPickParams is also added to set the parameters to 0 when a structure instance is created. Hence programmes using the peak picking parameter structure and which do not set the delta parameter (e.g. QM Vamp note onset detector) won't be affected by the modifications.

Functions modified:
- dsp/onsets/PeakPicking.cpp
- dsp/onsets/PeakPicking.h
- dsp/signalconditioning/DFProcess.cpp
- dsp/signalconditioning/DFProcess.h

#ifndef _CLUSTER_SEGMENTER_H
#define _CLUSTER_SEGMENTER_H

/*
 *  cluster_segmenter.h
 *  soundbite
 *
 *  Created by Mark Levy on 06/04/2006.
 *  Copyright 2006 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 <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <float.h>

#include "segment.h"
#include "cluster_melt.h"
#include "hmm/hmm.h"
#include "maths/pca/pca.h"

#ifdef __cplusplus
extern "C" {
#endif

/* applies MPEG-7 normalisation to constant-Q features, storing normalised envelope (norm) in last feature dimension */
void mpeg7_constq(double** features, int nframes, int ncoeff);

/* converts constant-Q features to normalised chroma */
void cq2chroma(double** cq, int nframes, int ncoeff, int bins, double** chroma);

void create_histograms(int* x, int nx, int m, int hlen, double* h);

void cluster_segment(int* q, double** features, int frames_read, int feature_length, int nHMM_states, 
					 int histogram_length, int nclusters, int neighbour_limit);

void constq_segment(int* q, double** features, int frames_read, int bins, int ncoeff, int feature_type, 
			 int nHMM_states, int histogram_length, int nclusters, int neighbour_limit);

#ifdef __cplusplus
}
#endif

#endif