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