blob: 7dc1c7b8b68b034be08faf5614ee5574b4944762 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
QM DSP Library
Centre for Digital Music, Queen Mary, University of London.
This file 2005-2006 Christian Landone.
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 DETECTIONFUNCTION_H
#define DETECTIONFUNCTION_H
#include "maths/MathUtilities.h"
#include "maths/MathAliases.h"
#include "dsp/phasevocoder/PhaseVocoder.h"
#include "base/Window.h"
#define DF_HFC (1)
#define DF_SPECDIFF (2)
#define DF_PHASEDEV (3)
#define DF_COMPLEXSD (4)
#define DF_BROADBAND (5)
struct DFConfig{
unsigned int stepSize; // DF step in samples
unsigned int frameLength; // DF analysis window - usually 2*step
int DFType; // type of detection function ( see defines )
double dbRise; // only used for broadband df (and required for it)
bool adaptiveWhitening; // perform adaptive whitening
double whiteningRelaxCoeff; // if < 0, a sensible default will be used
double whiteningFloor; // if < 0, a sensible default will be used
};
class DetectionFunction
{
public:
double* getSpectrumMagnitude();
DetectionFunction( DFConfig Config );
virtual ~DetectionFunction();
double process( const double* TDomain );
double process( const double* magnitudes, const double* phases );
private:
void whiten();
double runDF();
double HFC( unsigned int length, double* src);
double specDiff( unsigned int length, double* src);
double phaseDev(unsigned int length, double *srcPhase);
double complexSD(unsigned int length, double *srcMagnitude, double *srcPhase);
double broadband(unsigned int length, double *srcMagnitude);
private:
void initialise( DFConfig Config );
void deInitialise();
int m_DFType;
unsigned int m_dataLength;
unsigned int m_halfLength;
unsigned int m_stepSize;
double m_dbRise;
bool m_whiten;
double m_whitenRelaxCoeff;
double m_whitenFloor;
double* m_magHistory;
double* m_phaseHistory;
double* m_phaseHistoryOld;
double* m_magPeaks;
double* m_DFWindowedFrame; // Array for windowed analysis frame
double* m_magnitude; // Magnitude of analysis frame ( frequency domain )
double* m_thetaAngle;// Phase of analysis frame ( frequency domain )
Window<double> *m_window;
PhaseVocoder* m_phaseVoc; // Phase Vocoder
};
#endif
|
