323edo: Difference between revisions
Created page with "'''323edo''' is the equal division of the octave into 323 parts of 3.7152 cents each. It tempers out 10485760000/10460353203 and 274877906944/274..." Tags: Mobile edit Mobile web edit |
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{{Infobox ET}} | |||
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[[Category: | == Theory == | ||
[[Category: | 323edo is a strong [[5-limit]] system and an excellent tuning when considered in the no-11 [[subgroup]], with errors of 25% or less all the way into the [[31-limit]]. | ||
As an equal temperament, it [[tempering out|tempers out]] the [[vulture comma]], {{monzo| 24 -21 4 }} and the [[luna comma]], {{monzo| 38 -2 -15 }}, in the 5-limit; [[4375/4374]], [[589824/588245]], and [[703125/702464]] in the [[7-limit]], [[support]]ing 7-limit [[vulture]], [[lunatic]], [[enneadecal]], and [[gamera]]. | |||
In the 11-limit, the 323e val and the [[patent val]] are comparable in errors. [[1375/1372]], [[5632/5625]], [[14641/14580]], and [[19712/19683]] are tempered out in the patent val; [[540/539]], [[6250/6237]], [[12005/11979]], and [[16384/16335]] are tempered out in the 323e val. It provides the [[optimal patent val]] for the rank-5 temperament tempering out [[1573/1568]], the lambeth comma, as well as 13-limit [[stockhausenic]], and [[deuteromere]], the [[2.3.5.11 subgroup|2.3.5.11-subgroup]] temperament tempering out 14641/14580. | |||
=== Prime harmonics === | |||
{{Harmonics in equal|323|columns=11}} | |||
{{Harmonics in equal|323|columns=11|start=12|collapsed=true|title=Approximation of prime harmonics in 323edo (continued)}} | |||
=== Subsets and supersets === | |||
Since 323 factors into primes as {{nowrap| 17 × 19 }}, 323edo shares the excellent approximations of [[25/24]] in [[17edo]] and of [[6/5]] and [[28/27]] in [[19edo]]. | |||
== Regular temperament properties == | |||
{| class="wikitable center-4 center-5 center-6" | |||
|- | |||
! rowspan="2" | [[Subgroup]] | |||
! rowspan="2" | [[Comma list]] | |||
! rowspan="2" | [[Mapping]] | |||
! rowspan="2" | Optimal<br>8ve stretch (¢) | |||
! colspan="2" | Tuning error | |||
|- | |||
! [[TE error|Absolute]] (¢) | |||
! [[TE simple badness|Relative]] (%) | |||
|- | |||
| 2.3 | |||
| {{Monzo| 512 -323 }} | |||
| {{Mapping| 323 512 }} | |||
| −0.0669 | |||
| 0.0669 | |||
| 1.80 | |||
|- | |||
| 2.3.5 | |||
| {{Monzo| 24 -21 4 }}, {{monzo| 38 -2 -15 }} | |||
| {{Mapping| 323 512 750 }} | |||
| −0.0538 | |||
| 0.0577 | |||
| 1.55 | |||
|- | |||
| 2.3.5.7 | |||
| 4375/4374, 589824/588245, 703125/702464 | |||
| {{Mapping| 323 512 750 907 }} | |||
| −0.1146 | |||
| 0.1165 | |||
| 3.14 | |||
|- | |||
| 2.3.5.7.13 | |||
| 676/675, 4096/4095, 4375/4374, 16848/16807 | |||
| {{Mapping| 323 512 750 907 1195 }} | |||
| −0.0431 | |||
| 0.1770 | |||
| 4.76 | |||
|- | |||
| 2.3.5.7.13.17 | |||
| 442/441, 676/675, 2500/2499, 4096/4095, 4375/4374 | |||
| {{Mapping| 323 512 750 907 1195 1320 }} | |||
| +0.0020 | |||
| 0.1905 | |||
| 5.13 | |||
|- style="border-top: double;" | |||
| 2.3.5.7.11 | |||
| 1375/1372, 4375/4374, 5632/5625, 14641/14580 | |||
| {{Mapping| 323 512 750 907 1117 }} (323) | |||
| −0.0066 | |||
| 0.2399 | |||
| 6.46 | |||
|- | |||
| 2.3.5.7.11.13 | |||
| 676/675, 1001/1000, 1375/1372, 4096/4095, 4375/4374 | |||
| {{Mapping| 323 512 750 907 1117 1195 }} (323) | |||
| +0.0350 | |||
| 0.2380 | |||
| 6.40 | |||
|- style="border-top: double;" | |||
| 2.3.5.7.11 | |||
| 540/539, 4375/4374, 12005/11979, 16384/16335 | |||
| {{Mapping| 323 512 750 907 1118 }} (323e) | |||
| −0.2213 | |||
| 0.2375 | |||
| 6.39 | |||
|- | |||
| 2.3.5.7.11.13 | |||
| 364/363, 540/539, 676/675, 4096/4095, 4375/4374 | |||
| {{Mapping| 323 512 750 907 1118 1195 }} (323e) | |||
| −0.1440 | |||
| 0.2773 | |||
| 7.47 | |||
|} | |||
* 323et has a lower absolute error in the 5-limit than any previous equal temperaments, past [[289edo|289]] and followed by [[388edo|388]]. | |||
=== Rank-2 temperaments === | |||
{| class="wikitable center-all left-5" | |||
|+ style="font-size: 105%;" | Table of rank-2 temperaments by generator | |||
|- | |||
! Periods<br>per 8ve | |||
! Generator* | |||
! Cents* | |||
! Associated<br>ratio* | |||
! Temperaments | |||
|- | |||
| 1 | |||
| 26\323 | |||
| 96.59 | |||
| 200/189 | |||
| [[Hemiluna]] (323) | |||
|- | |||
| 1 | |||
| 27\323 | |||
| 100.31 | |||
| 675/637 | |||
| [[Heptacot]] (323) | |||
|- | |||
| 1 | |||
| 30\323 | |||
| 111.46 | |||
| 16/15 | |||
| [[Stockhausenic]] (323) | |||
|- | |||
| 1 | |||
| 31\323 | |||
| 115.17 | |||
| 77/72 | |||
| [[Semigamera]] (323) | |||
|- | |||
| 1 | |||
| 52\323 | |||
| 193.19 | |||
| 352/315 | |||
| [[Luna]] / [[lunatic]] (323e) | |||
|- | |||
| 1 | |||
| 62\323 | |||
| 230.34 | |||
| 8/7 | |||
| [[Gamera]] | |||
|- | |||
| 1 | |||
| 128\323 | |||
| 475.54 | |||
| 25/19 | |||
| [[Vulture]] | |||
|- | |||
| 17 | |||
| 134\323<br>(9\323) | |||
| 248.92<br>(33.44) | |||
| {{monzo| -23 5 9 -2 }}<br>(100352/98415) | |||
| [[Chlorine]] | |||
|- | |||
| 19 | |||
| 134\323<br>(2\323) | |||
| 497.83<br>(7.43) | |||
| 4/3<br>(225/224) | |||
| [[Enneadecal]] | |||
|} | |||
<nowiki/>* [[Normal forms #Equave-reduced-generator form|Octave-reduced form]], reduced to the first half-octave, and [[normal forms #Minimal-generator form|minimal form]] in parentheses if distinct | |||
[[Category:Deuteromere]] | |||
[[Category:Lambeth]] | |||
[[Category:Stockhausenic]] | |||