82edo: Difference between revisions

Contribution (talk | contribs)
Instruments: Insert music section after this, starting with Bryan Deister's ''microtonal improvisation in 82edo'' (2025)
 
(7 intermediate revisions by 4 users not shown)
Line 1: Line 1:
{{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 ===
Line 15: Line 15:
== 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
Line 280: Line 282:
|
|
|}
|}
<nowiki>*</nowiki> as a no-11 19-limit temperament
<nowiki />* As a no-11 19-limit temperament
==Zeta properties==
 
===Zeta peak index===
== Notation ==
{| class="wikitable"
=== Ups and downs notation ===
! colspan="3" |Tuning
60edo can be notated using [[ups and downs notation]] using [[Helmholtz–Ellis]] accidentals:
! colspan="3" |Strength
 
! colspan="2" |Closest EDO
{{Sharpness-sharp8}}
! colspan="2" |Integer limit
 
|-
== Approximation to JI ==
!ZPI
=== Zeta peak index ===
!Steps per octave
{{ZPI
!Step size (cents)
| zpi = 448
!Height
| steps = 81.9541455954050
!Integral
| step size = 14.6423343356444
!Gap
| tempered height = 6.653983
!EDO
| pure height = 5.154524
!Octave (cents)
| integral = 0.941321
!Consistent
| gap = 14.718732
!Distinct
| octave = 1200.67141552284
|-
| consistent = 8
|[[448zpi]]
| distinct = 8
|81.9541455954050
}}
|14.6423343356444
 
|6.653983
== Instruments ==
|0.941321
* [[Lumatone mapping for 82edo]]
|14.718732
 
|82edo
== Music ==
|1200.67141552284
; [[Bryan Deister]]
|8
* [https://www.youtube.com/shorts/p9xUY8EU7Zg ''microtonal improvisation in 82edo''] (2025)
|8
|}