blob: 16d1aa89956f8a827db2f0a4fce9401ccce990a0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* -*- 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 copyright 2006 Martin Gasser.
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.
*/
#include "TonalEstimator.h"
#include <cmath>
#include <iostream>
#ifndef PI
#define PI (3.14159265358979232846)
#endif
TonalEstimator::TonalEstimator()
{
m_Basis.resize(6);
int i = 0;
// circle of fifths
m_Basis[i].resize(12);
for (int iP = 0; iP < 12; iP++)
{
m_Basis[i][iP] = std::sin( (7.0 / 6.0) * iP * PI);
}
i++;
m_Basis[i].resize(12);
for (int iP = 0; iP < 12; iP++)
{
m_Basis[i][iP] = std::cos( (7.0 / 6.0) * iP * PI);
}
i++;
// circle of major thirds
m_Basis[i].resize(12);
for (int iP = 0; iP < 12; iP++)
{
m_Basis[i][iP] = 0.6 * std::sin( (2.0 / 3.0) * iP * PI);
}
i++;
m_Basis[i].resize(12);
for (int iP = 0; iP < 12; iP++)
{
m_Basis[i][iP] = 0.6 * std::cos( (2.0 / 3.0) * iP * PI);
}
i++;
// circle of minor thirds
m_Basis[i].resize(12);
for (int iP = 0; iP < 12; iP++)
{
m_Basis[i][iP] = 1.1 * std::sin( (3.0 / 2.0) * iP * PI);
}
i++;
m_Basis[i].resize(12);
for (int iP = 0; iP < 12; iP++)
{
m_Basis[i][iP] = 1.1 * std::cos( (3.0 / 2.0) * iP * PI);
}
}
TonalEstimator::~TonalEstimator()
{
}
TCSVector TonalEstimator::transform2TCS(const ChromaVector& rVector)
{
TCSVector vaRetVal;
vaRetVal.resize(6, 0.0);
for (int i = 0; i < 6; i++)
{
for (int iP = 0; iP < 12; iP++)
{
vaRetVal[i] += m_Basis[i][iP] * rVector[iP];
}
}
return vaRetVal;
}
|
