97th-octave temperaments: Difference between revisions
ArrowHead294 (talk | contribs) mNo edit summary |
|||
| (9 intermediate revisions by 3 users not shown) | |||
| Line 1: | Line 1: | ||
{{Infobox fractional-octave|97}} | |||
97th-octave temperaments occur between any equal divisions whose greatest common divisor is 97. | |||
Although harmonic quality of 97edo is not visible at first glance, some of its multiples are highly notable large edos. [[388edo]] is the first edo to be consistent in the 37-odd-limit, [[3395edo]] is a zeta edo and a strong 19-limit tuning, having lowest 19-limit relative error than any division before it, and while [[2619edo]] is not remarkably strong in harmonic approximation, it is consistent in the 33-odd-limit. | |||
== Berkelium == | |||
Berkelium is a remarkable high-limit subgroup temperament with equally remarkable full 31-limit branchings. It is named after the 97th element, | |||
Berkelium comes in two variants, berkelium-247, named after the most stable isotope, is described as the 388 & 3395 temperament. Another 31-limit variety, named berkelium-248 is described as a 388 & 2619 temperament. | |||
Different branchings of berkelium also map 1 step of 97edo to drastically different intervals, each of which could be used in a [[comma pump]]. Berkelium-247 maps the period in the higher limits to [[144/143]], the grossma. | Different branchings of berkelium also map 1 step of 97edo to drastically different intervals, each of which could be used in a [[comma pump]]. Berkelium-247 maps the period in the higher limits to [[144/143]], the grossma. | ||
Subgroup: 2.3.5.13.17.23.29.31 | Subgroup: 2.3.5.13.17.23.29.31 | ||
| Line 15: | Line 20: | ||
Optimal tuning (CTE): ~3/2 = 701.9... | Optimal tuning (CTE): ~3/2 = 701.9... | ||
{{Optimal ET sequence|legend=1|388, 2619, 3395}}... | |||
=== Berkelium-248 === | === Berkelium-248 === | ||
| Line 52: | Line 57: | ||
Optimal tuning (CTE): ~3/2 = 701.945 | Optimal tuning (CTE): ~3/2 = 701.945 | ||
{{Optimal ET sequence|legend=1|388, 2619}}, ... | |||
=== Berkelium-247 === | === Berkelium-247 === | ||
| Line 111: | Line 116: | ||
Optimal tuning (CTE): ~3/2 = 701.976 | Optimal tuning (CTE): ~3/2 = 701.976 | ||
{{Navbox fractional-octave}} | |||