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annotate dsp/chromagram/ConstantQ.h @ 225:49844bc8a895

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* Queen Mary C++ DSP library
author Chris Cannam <c.cannam@qmul.ac.uk>
date Wed, 05 Apr 2006 17:35:59 +0000
parents
children 2e3f5d2d62c1
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 #ifndef CONSTANTQ_H
c@225 12 #define CONSTANTQ_H
c@225 13
c@225 14 #include <vector>
c@225 15 #include "dsp/maths/MathAliases.h"
c@225 16 #include "dsp/maths/MathUtilities.h"
c@225 17
c@225 18 struct CQConfig{
c@225 19 unsigned int FS;
c@225 20 double min;
c@225 21 double max;
c@225 22 unsigned int BPO;
c@225 23 double CQThresh;
c@225 24 };
c@225 25
c@225 26 class ConstantQ {
c@225 27
c@225 28 //public functions incl. sparsekernel so can keep out of loop in main
c@225 29 public:
c@225 30 void process( double* FFTRe, double* FFTIm, double* CQRe, double* CQIm );
c@225 31
c@225 32 ConstantQ( CQConfig Config );
c@225 33 ~ConstantQ();
c@225 34
c@225 35 double* process( double* FFTData );
c@225 36
c@225 37 void sparsekernel();
c@225 38
c@225 39 double hamming(int len, int n) {
c@225 40 double out = 0.54 - 0.46*cos(2*PI*n/len);
c@225 41 return(out);
c@225 42 }
c@225 43
c@225 44 int getnumwin() { return m_numWin;}
c@225 45 double getQ() { return m_dQ;}
c@225 46 int getK() {return m_uK ;}
c@225 47 int getfftlength() { return m_FFTLength;}
c@225 48 int gethop() { return m_hop;}
c@225 49
c@225 50 private:
c@225 51 void initialise( CQConfig Config );
c@225 52 void deInitialise();
c@225 53
c@225 54 double* m_CQdata;
c@225 55 unsigned int m_FS;
c@225 56 double m_FMin;
c@225 57 double m_FMax;
c@225 58 double m_dQ;
c@225 59 double m_CQThresh;
c@225 60 unsigned int m_numWin;
c@225 61 unsigned int m_hop;
c@225 62 unsigned int m_BPO;
c@225 63 unsigned int m_FFTLength;
c@225 64 unsigned int m_uK;
c@225 65 std::vector<unsigned> m_sparseKernelIs;
c@225 66 std::vector<unsigned> m_sparseKernelJs;
c@225 67 std::vector<double> m_sparseKernelImagValues;
c@225 68 std::vector<double> m_sparseKernelRealValues;
c@225 69 };
c@225 70
c@225 71
c@225 72 #endif//CONSTANTQ_H
c@225 73