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annotate dsp/chromagram/ConstantQ.h @ 16:2e3f5d2d62c1

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* Move dsp/maths to maths ; bring PCA and HMM across from Soundbite
author cannam
date Wed, 09 Jan 2008 10:31:29 +0000
parents d7116e3183f8
children 8bdbda7fb893
rev   line source
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 CONSTANTQ_H
cannam@0 12 #define CONSTANTQ_H
cannam@0 13
cannam@0 14 #include <vector>
cannam@16 15 #include "maths/MathAliases.h"
cannam@16 16 #include "maths/MathUtilities.h"
cannam@0 17
cannam@0 18 struct CQConfig{
cannam@0 19 unsigned int FS;
cannam@0 20 double min;
cannam@0 21 double max;
cannam@0 22 unsigned int BPO;
cannam@0 23 double CQThresh;
cannam@0 24 };
cannam@0 25
cannam@0 26 class ConstantQ {
cannam@0 27
cannam@0 28 //public functions incl. sparsekernel so can keep out of loop in main
cannam@0 29 public:
cannam@0 30 void process( double* FFTRe, double* FFTIm, double* CQRe, double* CQIm );
cannam@0 31
cannam@0 32 ConstantQ( CQConfig Config );
cannam@0 33 ~ConstantQ();
cannam@0 34
cannam@0 35 double* process( double* FFTData );
cannam@0 36
cannam@0 37 void sparsekernel();
cannam@0 38
cannam@0 39 double hamming(int len, int n) {
cannam@0 40 double out = 0.54 - 0.46*cos(2*PI*n/len);
cannam@0 41 return(out);
cannam@0 42 }
cannam@0 43
cannam@0 44 int getnumwin() { return m_numWin;}
cannam@0 45 double getQ() { return m_dQ;}
cannam@0 46 int getK() {return m_uK ;}
cannam@0 47 int getfftlength() { return m_FFTLength;}
cannam@0 48 int gethop() { return m_hop;}
cannam@0 49
cannam@0 50 private:
cannam@0 51 void initialise( CQConfig Config );
cannam@0 52 void deInitialise();
cannam@0 53
cannam@0 54 double* m_CQdata;
cannam@0 55 unsigned int m_FS;
cannam@0 56 double m_FMin;
cannam@0 57 double m_FMax;
cannam@0 58 double m_dQ;
cannam@0 59 double m_CQThresh;
cannam@0 60 unsigned int m_numWin;
cannam@0 61 unsigned int m_hop;
cannam@0 62 unsigned int m_BPO;
cannam@0 63 unsigned int m_FFTLength;
cannam@0 64 unsigned int m_uK;
cannam@0 65 std::vector<unsigned> m_sparseKernelIs;
cannam@0 66 std::vector<unsigned> m_sparseKernelJs;
cannam@0 67 std::vector<double> m_sparseKernelImagValues;
cannam@0 68 std::vector<double> m_sparseKernelRealValues;
cannam@0 69 };
cannam@0 70
cannam@0 71
cannam@0 72 #endif//CONSTANTQ_H
cannam@0 73