82edo: Difference between revisions
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→Instruments: Insert music section after this, starting with Bryan Deister's ''microtonal improvisation in 82edo'' (2025) |
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{{Infobox ET}} | {{Infobox ET}} | ||
{{ | {{ED intro}} | ||
== Theory == | == Theory == | ||
82edo's [[patent val]] is [[contorted]] in the [[11-limit]], | 82edo's [[patent val]] is [[contorted]] in the [[11-limit]], since {{nowrap|82 {{=}} 2 × 41}}. In the [[13-limit]] the patent val tempers out [[169/168]] and [[676/675]], and in the [[17-limit]] tempers out [[273/272]]. It provides the optimal patent val for [[soothsaying]] temperament and [[support]]s [[baladic]] temperament. The 82d val tempers out [[50/49]] and is an excellent tuning for [[astrology]] and [[byhearted]], surpassing their optimal patent vals. The alternative 82e val tempers out [[121/120]] instead. | ||
=== Prime harmonics === | === Prime harmonics === | ||
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== Intervals == | == Intervals == | ||
{| class="wikitable right-1 right-2 left-3 left-4 left-5" | {| class="wikitable right-1 right-2 left-3 left-4 left-5" | ||
| | |- | ||
! # | ! rowspan="2" | # | ||
! Cents | ! rowspan="2" | Cents | ||
! Approximate | ! rowspan="2" | Approximate ratios* | ||
! Additional | ! colspan="2" | Additional ratios | ||
! | |- | ||
! Using the 82e val | |||
! Using the patent val | |||
|- | |- | ||
| 0 | | 0 | ||
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| | | | ||
|} | |} | ||
<nowiki>* | <nowiki />* As a no-11 19-limit temperament | ||
== | |||
=== | == Notation == | ||
{ | === Ups and downs notation === | ||
60edo can be notated using [[ups and downs notation]] using [[Helmholtz–Ellis]] accidentals: | |||
{{Sharpness-sharp8}} | |||
== Approximation to JI == | |||
=== Zeta peak index === | |||
{{ZPI | |||
| zpi = 448 | |||
| steps = 81.9541455954050 | |||
| step size = 14.6423343356444 | |||
| tempered height = 6.653983 | |||
| pure height = 5.154524 | |||
| integral = 0.941321 | |||
| gap = 14.718732 | |||
| octave = 1200.67141552284 | |||
| | | consistent = 8 | ||
| distinct = 8 | |||
|81.9541455954050 | }} | ||
|14.6423343356444 | |||
|6.653983 | == Instruments == | ||
|0.941321 | * [[Lumatone mapping for 82edo]] | ||
|14.718732 | |||
| | == Music == | ||
; [[Bryan Deister]] | |||
|8 | * [https://www.youtube.com/shorts/p9xUY8EU7Zg ''microtonal improvisation in 82edo''] (2025) | ||
|8 | |||