82edo: Difference between revisions

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m Theory: value of the d val
Instruments: Insert music section after this, starting with Bryan Deister's ''microtonal improvisation in 82edo'' (2025)
 
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{{Infobox ET}}
{{Infobox ET}}
{{EDO intro|82}}
{{ED intro}}


== Theory ==
== Theory ==
82edo's [[patent val]] is [[contorted]] in the [[11-limit]], from 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]] & [[byhearted]], surpassing their optimal patent vals. The alternative 82e val tempers out [[121/120]] instead.  
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 Ratios*
! rowspan="2" | Approximate ratios*
! Additional Ratios<br>with 11's (82e Val)
! colspan="2" | Additional ratios
! Additional Ratios<br>with 11's (Patent Val)
|-
! Using the 82e val
! Using the patent val
|-
|-
| 0
| 0
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|
|
|}
|}
<nowiki>*</nowiki> as a no-11 19-limit temperament
<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
}}
 
== Instruments ==
* [[Lumatone mapping for 82edo]]
 
== Music ==
; [[Bryan Deister]]
* [https://www.youtube.com/shorts/p9xUY8EU7Zg ''microtonal improvisation in 82edo''] (2025)