Mercurial > hg > qm-dsp

annotate dsp/onsets/PeakPicking.h @ 255:9edaa3ce62e8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
* Make MFCC able to accept already-FFT'd input, and simplify API a bit * Add log power value to MFCC, restore windowing, and avoid some heap allocs * In HMM, bail out of iteration if loglik hits NaN
author Chris Cannam <c.cannam@qmul.ac.uk>
date Fri, 18 Jan 2008 13:24:12 +0000
parents a98dd8ec96f8
children e5907ae6de17
rev   line source
c@225 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
c@225 2
c@225 3 /*
c@225 4 QM DSP Library
c@225 5
c@225 6 Centre for Digital Music, Queen Mary, University of London.
c@225 7 This file copyright 2005-2006 Christian Landone.
c@225 8 All rights reserved.
c@225 9 */
c@225 10
c@225 11 // PeakPicking.h: interface for the PeakPicking class.
c@225 12 //
c@225 13 //////////////////////////////////////////////////////////////////////
c@225 14
c@225 15 #ifndef PEAKPICKING_H
c@225 16 #define PEAKPICKING_H
c@225 17
c@241 18 #include "maths/MathUtilities.h"
c@241 19 #include "maths/MathAliases.h"
c@225 20 #include "dsp/signalconditioning/DFProcess.h"
c@225 21
c@225 22
c@237 23 struct PPWinThresh
c@225 24 {
c@225 25 unsigned int pre;
c@225 26 unsigned int post;
c@225 27 };
c@225 28
c@225 29 struct QFitThresh
c@225 30 {
c@225 31 double a;
c@225 32 double b;
c@225 33 double c;
c@225 34 };
c@225 35
c@225 36 struct PPickParams
c@225 37 {
c@225 38 unsigned int length; //Detection FunctionLength
c@225 39 double tau; // time resolution of the detection function:
c@225 40 unsigned int alpha; //alpha-norm parameter
c@225 41 double cutoff;//low-pass Filter cutoff freq
c@225 42 unsigned int LPOrd; // low-pass Filter order
c@225 43 double* LPACoeffs; //low pass Filter den coefficients
c@225 44 double* LPBCoeffs; //low pass Filter num coefficients
c@237 45 PPWinThresh WinT;//window size in frames for adaptive thresholding [pre post]:
c@225 46 QFitThresh QuadThresh;
c@225 47 };
c@225 48
c@225 49 class PeakPicking
c@225 50 {
c@225 51 public:
c@225 52 PeakPicking( PPickParams Config );
c@225 53 virtual ~PeakPicking();
c@225 54
c@225 55 void process( double* src, unsigned int len, vector<int> &onsets );
c@225 56
c@225 57
c@225 58 private:
c@225 59 void initialise( PPickParams Config );
c@225 60 void deInitialise();
c@225 61 int quadEval( vector<double> &src, vector<int> &idx );
c@225 62
c@225 63 DFProcConfig m_DFProcessingParams;
c@225 64
c@225 65 unsigned int m_DFLength ;
c@225 66 double Qfilta ;
c@225 67 double Qfiltb;
c@225 68 double Qfiltc;
c@225 69
c@225 70
c@225 71 double* m_workBuffer;
c@225 72
c@225 73 DFProcess* m_DFSmoothing;
c@225 74 };
c@225 75
c@225 76 #endif