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Diffstat (limited to 'libs/qm-dsp/dsp/onsets/PeakPicking.h')
-rw-r--r-- | libs/qm-dsp/dsp/onsets/PeakPicking.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libs/qm-dsp/dsp/onsets/PeakPicking.h b/libs/qm-dsp/dsp/onsets/PeakPicking.h new file mode 100644 index 0000000000..18a303fcaf --- /dev/null +++ b/libs/qm-dsp/dsp/onsets/PeakPicking.h @@ -0,0 +1,81 @@ +/* -*- 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. +*/ + +// PeakPicking.h: interface for the PeakPicking class. +// +////////////////////////////////////////////////////////////////////// + +#ifndef PEAKPICKING_H +#define PEAKPICKING_H + +#include "maths/MathUtilities.h" +#include "maths/MathAliases.h" +#include "dsp/signalconditioning/DFProcess.h" + + +struct PPWinThresh +{ + unsigned int pre; + unsigned int post; +}; + +struct QFitThresh +{ + double a; + double b; + double c; +}; + +struct PPickParams +{ + unsigned int length; //Detection FunctionLength + double tau; // time resolution of the detection function: + unsigned int alpha; //alpha-norm parameter + double cutoff;//low-pass Filter cutoff freq + unsigned int LPOrd; // low-pass Filter order + double* LPACoeffs; //low pass Filter den coefficients + double* LPBCoeffs; //low pass Filter num coefficients + PPWinThresh WinT;//window size in frames for adaptive thresholding [pre post]: + QFitThresh QuadThresh; +}; + +class PeakPicking +{ +public: + PeakPicking( PPickParams Config ); + virtual ~PeakPicking(); + + void process( double* src, unsigned int len, vector<int> &onsets ); + + +private: + void initialise( PPickParams Config ); + void deInitialise(); + int quadEval( vector<double> &src, vector<int> &idx ); + + DFProcConfig m_DFProcessingParams; + + unsigned int m_DFLength ; + double Qfilta ; + double Qfiltb; + double Qfiltc; + + + double* m_workBuffer; + + DFProcess* m_DFSmoothing; +}; + +#endif |