|
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@20
|
19 unsigned int FS; // samplerate
|
|
cannam@20
|
20 double min; // minimum frequency
|
|
cannam@20
|
21 double max; // maximum frequency
|
|
cannam@20
|
22 unsigned int BPO; // bins per octave
|
|
cannam@20
|
23 double CQThresh; // threshold
|
|
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
|
