Wollemia: Difference between revisions

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Latest revision as of 10:40, 30 May 2026

Wollemia
Subgroups 2.3.5.7, 2.3.5.7.11, 2.3.5.7.11.13
Comma basis 126/125, 2240/2187 (7-limit);
56/55, 100/99, 243/242 (11-limit)
56/55, 91/90, 100/99, 243/242
(13-limit)
Reduced mapping ⟨1; 4 9 19 10 -2]
ET join 27e & 34
Generators (CWE) ~10/9 = 177.1 ¢
MOS scales 6L 1s, 7L 6s, 7L 13s, 7L 20s
Ploidacot tetracot
Minimax error 9-odd-limit: 14.5 ¢;
13-odd-limit: 21.7 ¢
Target scale size 9-odd-limit: 20 notes;
13-odd-limit: 27 notes

The wollemia temperament is one of the 7-limit extensions of tetracot, the 5-limit temperament tempering out the tetracot comma (20000/19683), and is naturally a full 13-limit temperament.

In addition to the tetracot comma, wollemia tempers out 126/125, making it a starling temperament.

See Tetracot family #Wollemia for technical data.

Todo: expand

Interval chain

# Cents* Approximate ratios
0 0.0 1/1
1 177.1 10/9, 11/10
2 354.2 11/9, 16/13
3 531.3 15/11
4 708.4 3/2
5 885.5 5/3
6 1062.6 11/6, 24/13, 28/15
7 39.7 40/39, 45/44, 55/54
8 216.8 9/8
9 393.9 5/4, 14/11
10 570.9 7/5, 11/8, 18/13
11 748.0 14/9, 20/13
12 925.1 22/13
13 1102.2 15/8, 21/11
14 79.3 21/20, 25/24, 27/26
15 256.4 7/6, 15/13
16 433.5 33/26, 35/27
17 610.6 45/32, 63/44
18 787.7 25/16
19 964.8 7/4
20 1141.9 35/18, 49/25

* In 13-limit CWE tuning, octave reduced

Tunings

Tuning spectrum

Edo
generator
Eigenmonzo
(Unchanged-interval)
Generator (¢) Comments
11/10 165.004
1\7 171.429 7d val
11/9 173.704
11/6 174.894
11/8 175.132
3/2 175.489
13/11 175.899
15/8 176.021
5/4 176.257 5-odd-limit minimax
13/9 176.338
5\34 176.471 Lower bound of 7- to 13-odd-limit diamond monotone
15/13 176.516
5/3 176.872
13/10 176.890
13/12 176.905
7/4 177.307 7-, 9-, 11-, 13- and 15-odd-limit minimax
13/7 177.538
4\27 177.777 27e val, upper bound of 9- to 13-odd-limit diamond monotone
15-odd-limit diamond monotone (singleton)
7/6 177.791
7/5 178.251
9/7 178.629
15/11 178.984
11/7 179.723
13/8 179.736
3\20 180.000 20cde val, upper bound of 7-odd-limit diamond monotone
15/14 180.093
9/5 182.404