← 31ed9 33ed9 35ed9 →
Prime factorization 3 × 11
Step size 115.27 ¢ 
Octave 10\33ed9 (1152.7 ¢)
Twelfth 17\33ed9 (1959.59 ¢)
Consistency limit 2
Distinct consistency limit 2

33 equal divisions of the 9th harmonic (abbreviated 33ed9) is a nonoctave tuning system that divides the interval of 9/1 into 33 equal parts of about 115 ¢ each. Each step represents a frequency ratio of 91/33, or the 33rd root of 9.

Intervals

Steps Cents Approximate ratios Note names (12\125)
0 0 1/1 C
1 115.3 ^C#
2 230.5 ^^^D
3 345.8 ^^^^D#
4 461.1 17/13 vvvvF
5 576.4 7/5 vvvF#
6 691.6 vG
7 806.9 G#
8 922.2 ^^A
9 1037.4
10 1152.7
11 1268 23/11, 25/12
12 1383.2
13 1498.5
14 1613.8
15 1729.1 19/7
16 1844.3
17 1959.6
18 2074.9
19 2190.1
20 2305.4 19/5
21 2420.7
22 2535.9 13/3
23 2651.2
24 2766.5
25 2881.8
26 2997 17/3
27 3112.3
28 3227.6
29 3342.8
30 3458.1
31 3573.4
32 3688.6
33 3803.9