1665edo: Difference between revisions

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{{Infobox ET}}
{{Infobox ET}}
{{EDO intro|1665}}
{{ED intro}}
==Theory==
1665edo is a very strong 5-limit (as well as 2.3.5.11 subgroup) tuning and it is consistent in the 15-odd-limit. In the 5-limit, 1665edo is a tuning for the [[gross]] temperament.


1665edo provides the optimal patent val for the [[rhodium]] temperament in the 11-limit and also in the 13-limit. In addition, it provides the optimal patent val for [[dzelic]] temperament in the 13-limit.
== Theory ==
===Prime harmonics===
1665edo is a very strong 5-limit (as well as 2.3.5.11 [[subgroup]]) tuning and it is [[consistent]] in the [[15-odd-limit]]. In the 5-limit, 1665edo is a tuning for the [[gross]] temperament.
{{harmonics in equal|1665}}
 
==Regular temperament properties==
1665edo provides the [[optimal patent val]] for the [[rhodium]] temperament in the 11-limit and also in the 13-limit. In addition, it provides the optimal patent val for [[dzelic]] temperament in the 13-limit.  
 
The 1665cc val is a tuning for the [[roentgenium]] temperament, and the patent val tunes the unnamed 111 & 1665 temperament in the 13-limit which has a comma basis {6656/6655, 123201/123200, 250047/250000, 91182091/91125000}.
 
=== Prime harmonics ===
{{Harmonics in equal|1665}}
 
=== Subsets and supersets ===
Since 1665 factors into {{factorization|1665}}, 1665edo has subset edos {{EDOs| 3, 5, 9, 15, 37, 45, 111, 185, 333, and 555 }}.
 
== Regular temperament properties ==
=== Rank-2 temperaments ===
=== Rank-2 temperaments ===
{| class="wikitable center-all left-5"
{| class="wikitable center-all left-5"
|+Table of rank-2 temperaments by generator
|+ style="font-size: 105%;" | Table of rank-2 temperaments by generator
! Periods<br>per 8ve
|-
! Generator<br>(Reduced)
! Periods<br />per 8ve
! Cents<br>(Reduced)
! Generator*
! Associated<br>Ratio
! Cents*
! Associated<br />ratio*
! Temperaments
! Temperaments
|-
|-
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| 127\1665
| 127\1665
| 91.531
| 91.531
| {{monzo|9 -32 18}}
| {{monzo| 9 -32 18 }}
| [[Gross]]
| [[Gross]]
|-
|-
| 37
| 37
| 377\1665<br>(17\1665)
| 377\1665<br />(17\1665)
| 271.711<br>(12.252)
| 271.711<br />(12.252)
| 117/100<br>(?)
| 117/100<br />(?)
| [[Dzelic]]
| [[Dzelic]]
|-
|-
| 45
| 45
| 1301\1665<br>(6\1665)
| 1301\1665<br />(6\1665)
| 937.657<br>(4.324)
| 937.657<br />(4.324)
| 55/32<br>(?)
| 55/32<br />(?)
| [[Rhodium]]
| [[Rhodium]]
|}
|}
<nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if distinct