28ed4/3
| ← 27ed4/3 | 28ed4/3 | 29ed4/3 → |
(semiconvergent)
28ed4/3 can be thought of as a 2.3.7.11 subgroup analogue to 20edf or Carlos Gamma. It very closely approximates the intervals of 8/7 (at 13 steps) and 7/6 (at 15 steps), along with 11/8 (at 31 steps). This tuning is close to every other step of 135edo or to 107edt.
Harmonics
| Harmonic | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | -8.25 | +1.29 | +1.29 | +6.30 | -6.96 | -7.02 | -6.96 | +2.58 | -1.95 | -6.87 | +2.58 |
| Relative (%) | -46.4 | +7.2 | +7.2 | +35.4 | -39.1 | -39.5 | -39.1 | +14.5 | -11.0 | -38.6 | +14.5 | |
| Steps (reduced) |
67 (11) |
107 (23) |
135 (23) |
157 (17) |
174 (6) |
189 (21) |
202 (6) |
214 (18) |
224 (0) |
233 (9) |
242 (18) | |
| Harmonic | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | +6.30 | +2.52 | +7.58 | +2.58 | +4.35 | -5.67 | +7.45 | +7.58 | -5.73 | +2.67 | -3.14 |
| Relative (%) | +35.4 | +14.1 | +42.6 | +14.5 | +24.4 | -31.9 | +41.9 | +42.6 | -32.2 | +15.0 | -17.7 | |
| Steps (reduced) |
250 (26) |
257 (5) |
264 (12) |
270 (18) |
276 (24) |
281 (1) |
287 (7) |
292 (12) |
296 (16) |
301 (21) |
305 (25) | |
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