1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
\r
6 Centre for Digital Music, Queen Mary, University of London.
\r
7 This file 2005-2006 Christian Landone.
\r
9 This program is free software; you can redistribute it and/or
\r
10 modify it under the terms of the GNU General Public License as
\r
11 published by the Free Software Foundation; either version 2 of the
\r
12 License, or (at your option) any later version. See the file
\r
13 COPYING included with this distribution for more information.
\r
16 #ifndef TEMPOTRACK_H
\r
17 #define TEMPOTRACK_H
\r
23 #include "dsp/signalconditioning/DFProcess.h"
\r
24 #include "maths/Correlation.h"
\r
25 #include "dsp/signalconditioning/Framer.h"
\r
39 unsigned int winLength; //Analysis window length
\r
40 unsigned int lagLength; //Lag & Stride size
\r
41 unsigned int alpha; //alpha-norm parameter
\r
42 unsigned int LPOrd; // low-pass Filter order
\r
43 double* LPACoeffs; //low pass Filter den coefficients
\r
44 double* LPBCoeffs; //low pass Filter num coefficients
\r
45 WinThresh WinT;//window size in frames for adaptive thresholding [pre post]:
\r
52 TempoTrack( TTParams Params );
\r
53 virtual ~TempoTrack();
\r
55 vector<int> process( vector <double> DF, vector <double> *tempoReturn = 0);
\r
59 void initialise( TTParams Params );
\r
60 void deInitialise();
\r
62 int beatPredict( unsigned int FSP, double alignment, double period, unsigned int step);
\r
63 int phaseMM( double* DF, double* weighting, unsigned int winLength, double period );
\r
64 void createPhaseExtractor( double* Filter, unsigned int winLength, double period, unsigned int fsp, unsigned int lastBeat );
\r
65 int findMeter( double* ACF, unsigned int len, double period );
\r
66 void constDetect( double* periodP, int currentIdx, int* flag );
\r
67 void stepDetect( double* periodP, double* periodG, int currentIdx, int* flag );
\r
68 void createCombFilter( double* Filter, unsigned int winLength, unsigned int TSig, double beatLag );
\r
69 double tempoMM( double* ACF, double* weight, int sig );
\r
71 unsigned int m_dataLength;
\r
72 unsigned int m_winLength;
\r
73 unsigned int m_lagLength;
\r
79 vector<int> m_beats; // Vector of detected beats
\r
81 double m_lockedTempo;
\r
83 double* m_tempoScratch;
\r
84 double* m_smoothRCF; // Smoothed Output of Comb Filterbank (m_tempoScratch)
\r
86 // Processing Buffers
\r
87 double* m_rawDFFrame; // Original Detection Function Analysis Frame
\r
88 double* m_smoothDFFrame; // Smoothed Detection Function Analysis Frame
\r
89 double* m_frameACF; // AutoCorrelation of Smoothed Detection Function
\r
91 //Low Pass Coefficients for DF Smoothing
\r
95 // Objetcs/operators declaration
\r
97 DFProcess* m_DFConditioning;
\r
98 Correlation m_correlator;
\r
99 // Config structure for DFProcess
\r
100 DFProcConfig m_DFPParams;
\r
102 // also want to smooth m_tempoScratch
\r
103 DFProcess* m_RCFConditioning;
\r
104 // Config structure for RCFProcess
\r
105 DFProcConfig m_RCFPParams;
\r