User:Overthink/41edo well temperament: Difference between revisions
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Revision as of 20:17, 14 December 2025
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.
| 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 | ? | ? |