70ed6: Difference between revisions
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{{Infobox ET}} | {{Infobox ET}} | ||
'''[[Ed6|Division of the sixth harmonic]] into 70 equal parts''' (70ED6) is very nearly identical to [[27edo|27 EDO]], but with the [[6/1]] rather than the 2/1 being just. The octave is about 3.5316 [[cent]]s stretched and the step size is about 44.3136 cents. | '''[[Ed6|Division of the sixth harmonic]] into 70 equal parts''' (70ED6) is very nearly identical to [[27edo|27 EDO]], but with the [[6/1]] rather than the 2/1 being just. The octave is about 3.5316 [[cent]]s [[stretched and compressed tuning|compressed]] and the step size is about 44.3136 cents. The local [[The_Riemann_zeta_function_and_tuning#Optimal_octave_stretch|zeta peak]] around 27 is located at 27.086614, which has a step size of 44.3071 cents, making 70ed6 very close to optimal for 27edo. | ||
==Harmonics== | ==Harmonics== | ||
Revision as of 17:30, 13 May 2024
| ← 69ed6 | 70ed6 | 71ed6 → |
Division of the sixth harmonic into 70 equal parts (70ED6) is very nearly identical to 27 EDO, but with the 6/1 rather than the 2/1 being just. The octave is about 3.5316 cents compressed and the step size is about 44.3136 cents. The local zeta peak around 27 is located at 27.086614, which has a step size of 44.3071 cents, making 70ed6 very close to optimal for 27edo.
Harmonics
| Harmonic | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | -3.53 | +3.53 | -7.06 | +5.45 | +0.00 | -0.99 | -10.59 | +7.06 | +1.91 | +14.16 | -3.53 |
| Relative (%) | -8.0 | +8.0 | -15.9 | +12.3 | +0.0 | -2.2 | -23.9 | +15.9 | +4.3 | +32.0 | -8.0 | |
| Steps (reduced) |
27 (27) |
43 (43) |
54 (54) |
63 (63) |
70 (0) |
76 (6) |
81 (11) |
86 (16) |
90 (20) |
94 (24) |
97 (27) | |