cannam@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
cannam@0: 
cannam@0: /*
cannam@0:     QM DSP Library
cannam@0: 
cannam@0:     Centre for Digital Music, Queen Mary, University of London.
Chris@84:     This file 2005-2006 Christian Landone.
Chris@84: 
Chris@84:     This program is free software; you can redistribute it and/or
Chris@84:     modify it under the terms of the GNU General Public License as
Chris@84:     published by the Free Software Foundation; either version 2 of the
Chris@84:     License, or (at your option) any later version.  See the file
Chris@84:     COPYING included with this distribution for more information.
cannam@0: */
cannam@0: 
cannam@0: // PeakPicking.h: interface for the PeakPicking class.
cannam@0: //
cannam@0: //////////////////////////////////////////////////////////////////////
cannam@0: 
cannam@0: #ifndef PEAKPICKING_H
cannam@0: #define PEAKPICKING_H
cannam@0: 
cannam@16: #include "maths/MathUtilities.h"
cannam@16: #include "maths/MathAliases.h"
cannam@0: #include "dsp/signalconditioning/DFProcess.h"
cannam@0: 
cannam@0: 
cannam@12: struct PPWinThresh
cannam@0: {
cannam@0:     unsigned int pre;
cannam@0:     unsigned int  post;
cannam@0: };
cannam@0: 
cannam@0: struct QFitThresh
cannam@0: {
cannam@0:     double a;
cannam@0:     double b;
cannam@0:     double c;
cannam@0: };
cannam@0: 
cannam@0: struct PPickParams
cannam@0: {
cannam@0:     unsigned int length; //Detection FunctionLength
cannam@0:     double tau; // time resolution of the detection function:
cannam@0:     unsigned int alpha; //alpha-norm parameter
cannam@0:     double cutoff;//low-pass Filter cutoff freq
cannam@0:     unsigned int LPOrd; // low-pass Filter order
cannam@0:     double* LPACoeffs; //low pass Filter den coefficients
cannam@0:     double* LPBCoeffs; //low pass Filter num coefficients
cannam@12:     PPWinThresh WinT;//window size in frames for adaptive thresholding [pre post]:
cannam@0:     QFitThresh QuadThresh;
cannam@0: };
cannam@0: 
cannam@0: class PeakPicking  
cannam@0: {
cannam@0: public:
cannam@0:     PeakPicking( PPickParams Config );
cannam@0:     virtual ~PeakPicking();
cannam@0: 	
cannam@0:     void process( double* src, unsigned int len, vector<int> &onsets  );
cannam@0: 
cannam@0: 
cannam@0: private:
cannam@0:     void initialise( PPickParams Config  );
cannam@0:     void deInitialise();
cannam@0:     int  quadEval( vector<double> &src, vector<int> &idx );
cannam@0: 	
cannam@0:     DFProcConfig m_DFProcessingParams;
cannam@0: 
cannam@0:     unsigned int m_DFLength ;
cannam@0:     double Qfilta ;
cannam@0:     double Qfiltb;
cannam@0:     double Qfiltc;
cannam@0: 
cannam@0: 
cannam@0:     double* m_workBuffer;
cannam@0: 	
cannam@0:     DFProcess*	m_DFSmoothing;
cannam@0: };
cannam@0: 
cannam@0: #endif