24ed7/4
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Prime factorization
23 × 3
Step size
40.3677¢
Octave
30\24ed7/4 (1211.03¢) (→5\4ed7/4)
Twelfth
47\24ed7/4 (1897.28¢)
(semiconvergent)
Consistency limit
3
Distinct consistency limit
3
Special properties
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← 23ed7/4 | 24ed7/4 | 25ed7/4 → |
(semiconvergent)
24 equal divisions of 7/4 (abbreviated 24ed7/4) is a nonoctave tuning system that divides the interval of 7/4 into 24 equal parts of about 40.4 ¢ each. Each step represents a frequency ratio of (7/4)1/24, or the 24th root of 7/4.
Intervals
Steps | Cents | Approximate Ratios |
---|---|---|
0 | 0 | 1/1 |
1 | 40.368 | |
2 | 80.735 | 19/18, 26/25 |
3 | 121.103 | 14/13, 15/14 |
4 | 161.471 | 11/10, 12/11, 21/19, 23/21 |
5 | 201.839 | |
6 | 242.206 | 15/13 |
7 | 282.574 | 13/11, 20/17 |
8 | 322.942 | 6/5, 23/19 |
9 | 363.31 | |
10 | 403.677 | 19/15 |
11 | 444.045 | 9/7, 13/10, 22/17 |
12 | 484.413 | 25/19 |
13 | 524.781 | 15/11, 19/14 |
14 | 565.148 | 18/13, 25/18 |
15 | 605.516 | 17/12, 24/17 |
16 | 645.884 | 13/9, 19/13 |
17 | 686.252 | |
18 | 726.619 | 26/17 |
19 | 766.987 | 14/9 |
20 | 807.355 | |
21 | 847.723 | 18/11, 23/14 |
22 | 888.09 | 5/3 |
23 | 928.458 | 17/10 |
24 | 968.826 |
Harmonics
Harmonic | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Error | Absolute (¢) | +11.0 | -4.7 | -18.3 | -0.9 | +6.4 | -18.3 | -7.3 | -9.3 | +10.1 | +6.6 | +17.4 |
Relative (%) | +27.3 | -11.6 | -45.3 | -2.3 | +15.8 | -45.3 | -18.0 | -23.1 | +25.0 | +16.3 | +43.1 | |
Steps (reduced) |
30 (6) |
47 (23) |
59 (11) |
69 (21) |
77 (5) |
83 (11) |
89 (17) |
94 (22) |
99 (3) |
103 (7) |
107 (11) |
Harmonic | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Error | Absolute (¢) | -0.1 | -7.3 | -5.6 | +3.8 | +19.9 | +1.7 | -11.2 | -19.2 | +17.4 | +17.6 | -19.0 |
Relative (%) | -0.2 | -18.0 | -13.9 | +9.3 | +49.3 | +4.2 | -27.7 | -47.7 | +43.1 | +43.6 | -47.1 | |
Steps (reduced) |
110 (14) |
113 (17) |
116 (20) |
119 (23) |
122 (2) |
124 (4) |
126 (6) |
128 (8) |
131 (11) |
133 (13) |
134 (14) |