60edt

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← 59edt 60edt 61edt →
Prime factorization 22 × 3 × 5
Step size 31.6993¢ 
Octave 38\60edt (1204.57¢) (→19\30edt)
Consistency limit 5
Distinct consistency limit 5
Special properties

60 equal divisions of the tritave, perfect twelfth, or 3rd harmonic (abbreviated 60edt or 60ed3), is a nonoctave tuning system that divides the interval of 3/1 into 60 equal parts of about 31.7 ¢ each. Each step represents a frequency ratio of 31/60, or the 60th root of 3.

Intervals

Steps Cents Approximate ratios
0 0 1/1
1 31.699
2 63.399 26/25, 27/26, 28/27, 29/28
3 95.098 18/17, 19/18
4 126.797 14/13, 29/27
5 158.496 23/21, 34/31
6 190.196 19/17, 29/26
7 221.895 25/22, 33/29
8 253.594 22/19, 29/25
9 285.293 13/11, 20/17, 33/28
10 316.993 6/5
11 348.692 11/9
12 380.391
13 412.09 19/15, 33/26
14 443.79 22/17, 31/24
15 475.489 25/19, 29/22
16 507.188
17 538.887 15/11, 26/19
18 570.587 25/18
19 602.286 17/12
20 633.985 13/9
21 665.684 22/15, 25/17
22 697.384
23 729.083 29/19, 35/23
24 760.782 14/9, 31/20
25 792.481 19/12, 30/19
26 824.181 29/18
27 855.88 18/11, 23/14
28 887.579 5/3
29 919.278 17/10
30 950.978 26/15
31 982.677 30/17
32 1014.376 9/5
33 1046.075 11/6
34 1077.775 28/15
35 1109.474 19/10
36 1141.173 27/14, 29/15, 31/16
37 1172.872
38 1204.572
39 1236.271
40 1267.97 25/12, 27/13
41 1299.669
42 1331.369 28/13
43 1363.068 11/5
44 1394.767
45 1426.466
46 1458.166
47 1489.865 26/11
48 1521.564
49 1553.263 27/11
50 1584.963 5/2
51 1616.662 28/11, 33/13
52 1648.361
53 1680.06 29/11
54 1711.76 35/13
55 1743.459
56 1775.158
57 1806.857 17/6
58 1838.557 26/9
59 1870.256
60 1901.955 3/1

Harmonics

Approximation of harmonics in 60edt
Harmonic 2 3 4 5 6 7 8 9 10 11 12
Error Absolute (¢) +4.6 +0.0 +9.1 +3.2 +4.6 -8.7 +13.7 +0.0 +7.8 +1.3 +9.1
Relative (%) +14.4 +0.0 +28.8 +10.2 +14.4 -27.5 +43.3 +0.0 +24.6 +4.0 +28.8
Steps
(reduced)
38
(38)
60
(0)
76
(16)
88
(28)
98
(38)
106
(46)
114
(54)
120
(0)
126
(6)
131
(11)
136
(16)
Approximation of harmonics in 60edt
Harmonic 13 14 15 16 17 18 19 20 21 22 23
Error Absolute (¢) -2.6 -4.1 +3.2 -13.4 +8.4 +4.6 +6.1 +12.4 -8.7 +5.9 -7.7
Relative (%) -8.3 -13.0 +10.2 -42.3 +26.6 +14.4 +19.1 +39.0 -27.5 +18.5 -24.3
Steps
(reduced)
140
(20)
144
(24)
148
(28)
151
(31)
155
(35)
158
(38)
161
(41)
164
(44)
166
(46)
169
(49)
171
(51)