612edo: Difference between revisions

+data
+rank-2 temperaments
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== Theory ==
== Theory ==
612edo is a very strong [[5-limit]] system, a fact noted by [[Bosanquet]] and [[Barbour]]. It tempers out the sasktel comma, {{monzo| 485 -306 }}, in the 3-limit, and in the 5-limit {{monzo| -52 -17 34 }}, the [[septendecima]], {{monzo| 1 -27 18 }}, the [[ennealimma]], {{monzo| -53 10 16 }}, the kwazy comma, {{monzo| 54 -37 2 }}, the [[monzisma]], {{monzo| -107 47 14 }}, the fortune comma, and {{monzo| 161 -84 -12 }}, the [[atom]]. In the 7-limit it tempers out [[2401/2400]] and [[4375/4374]], so that it [[support]]s the [[ennealimmal]] temperament, and in fact provides the [[optimal patent val]] for ennealimmal. The 7-limit val for 612 can be characterized as the ennealimmal commas plus the kwazy comma. In the 11-limit, it tempers out [[3025/3024]] and [[9801/9800]], so that 612 supports the [[hemiennealimmal]] temperament. In the 13-limit, it tempers [[2200/2197]] and [[4096/4095]].
612edo is a very strong [[5-limit]] system, a fact noted by [[Bosanquet]] and [[Barbour]]. It tempers out the sasktel comma, {{monzo| 485 -306 }}, in the 3-limit, and in the 5-limit {{monzo| -52 -17 34 }}, the [[septendecima]], {{monzo| 1 -27 18 }}, the [[ennealimma]], {{monzo| -53 10 16 }}, the kwazy comma, {{monzo| 54 -37 2 }}, the [[monzisma]], {{monzo| -107 47 14 }}, the fortune comma, and {{monzo| 161 -84 -12 }}, the [[atom]]. In the 7-limit it tempers out [[2401/2400]] and [[4375/4374]], so that it [[support]]s the [[ennealimmal]] temperament, and in fact provides the [[optimal patent val]] for ennealimmal. The 7-limit val for 612 can be characterized as the ennealimmal commas plus the kwazy comma. In the 11-limit, it tempers out [[3025/3024]] and [[9801/9800]], so that 612 supports the [[hemiennealimmal]] temperament. In the 13-limit, it tempers [[2200/2197]] and [[4096/4095]].


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=== Prime harmonics ===
=== Prime harmonics ===
{{Harmonics in equal|612}}
{{Harmonics in equal|612}}
[[Category:612edo]]
[[Category:Equal divisions of the octave]]
[[Category:Ennealimmal]]
[[Category:Hemiennealimmal]]


== Regular temperament properties ==
== Regular temperament properties ==
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| 4.68
| 4.68
|}
|}
=== Rank-2 temperaments ===
{| class="wikitable center-all left-5"
|+Table of rank-2 temperaments by generator
! Periods<br>per octave
! Generator<br>(reduced)
! Cents<br>(reduced)
! Associated<br>ratio
! Temperaments
|-
| 1
| 113\612
| 221.57
| 8388608/7381125
| [[Fortune]]
|-
| 1
| 127\612
| 249.02
| {{monzo| -26 18 -1 }}
| [[Monzismic]]
|-
| 2
| 83\612
| 162.75
| 1125/1024
| [[Kwazy]]
|-
| 9
| 133\612<br>(25\612)
| 315.69<br>(49.02)
| 6/5<br>(36/35)
| [[Ennealimmal]]
|-
| 12
| 254\612<br>(1\612)
| 498.04<br>(1.96)
| 4/3<br>(32805/32768)
| [[Atomic]]
|-
| 17
| 127\612<br>(17\612)
| 249.02<br>(33.33)
| {{monzo| -23 5 9 -2 }}<br>(100352/98415)
| [[Chlorine]]
|-
| 18
| 127\612<br>(9\612)
| 249.02<br>(17.65)
| 231/200<br>(99/98)
| [[Hemiennealimmal]] (11-limit)
|}
[[Category:612edo]]
[[Category:Equal divisions of the octave]]
[[Category:Ennealimmal]]
[[Category:Hemiennealimmal]]