User:Overthink/41edo well temperament

Revision as of 20:17, 14 December 2025 by Overthink (talk | contribs) (started page)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

A highly notable tuning system is 41edo, which is distinctly consistent and consistent to distance 2 in the 9-odd-limit, consistent to the 15-odd-limit, and is overall great for its size in all prime limits up to 13. However, the accuracy of some intervals is debateable, so we will construct a well temperament in order to fix this issue.

The chain of fifths

Our well temperament will be mainly based on a chain of fifths, and we will target harmonics 5, 7, 11, and 13. In 41edo, these prime harmonics are mapped as follows:

Prime Fifths
down
Fifths
up
5 -8 +33
7 -14 +27
11 -18 +23
13 -21 +20

Prime 5 is closest to the root on the circle of fifths; being only 8 fifth down due to 41edo tempering out the schisma. We build our well temperament down the chain of fifths to reach a more accurate prime 5, using slightly flat fifths of 701.738 ¢, or 1/9 schisma flat of just. We continue this chain of schismic fifths until we reach -10 fifths, or 10/9.

41edo well temperament
Degree Fifths Cents Fifth below (¢) Fifth above (¢)
0 +0 0 701.738 ?
1 ? ? ? ?
2 ? ? ? ?
3 ? ? ? ?
4 ? ? ? ?
5 ? ? ? ?
6 ? ? ? ?
7 ? ? ? ?
8 ? ? ? ?
9 ? ? ? ?
10 ? ? ? ?
11 ? ? ? ?
12 ? ? ? ?
13 ? ? ? ?
14 ? ? ? ?
15 ? ? ? ?
16 ? ? ? ?
17 -1 498.262 701.738 701.738
18 ? ? ? ?
19 ? ? ? ?
20 ? ? ? ?
21 ? ? ? ?
22 ? ? ? ?
23 ? ? ? ?
24 ? ? ? ?
25 ? ? ? ?
26 ? ? ? ?
27 ? ? ? ?
28 ? ? ? ?
29 ? ? ? ?
30 ? ? ? ?
31 ? ? ? ?
32 ? ? ? ?
33 ? ? ? ?
34 ? ? ? ?
35 ? ? ? ?
36 ? ? ? ?
37 ? ? ? ?
38 ? ? ? ?
39 ? ? ? ?
40 ? ? ? ?
41 +0 1200 ? ?