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The '''equal division of 11/5''' ('''ed11/5''') is a [[tuning]] obtained by dividing the [[11/5|neutral ninth (11/5)]] into a certain number of [[equal]] steps.


'''Ed11/5''' is division of of the neutral ninth ([[11/5]]) into n equal parts.  
Division of 11/5 into equal parts does not necessarily imply directly using this interval as an [[equivalence]]. Many, though not all, ed11/5 have a perceptually important [[Pseudo-octave|false octave]], with various degrees of accuracy.


Division of 11/5 into equal parts can be conceived of as to directly use this interval as an equivalence, or not. The question of equivalence has not even been posed yet. The utility of 11/5 as a base though is apparent by it being the best option for "no-twos-or-threes" harmony after the extremely wide [[ed5|pentave]], as well as it being a relatively strong consonance.
The structural utility of 11/5 is apparent by it being the high ninth of a [[just]] dominant 11th chord, being the best option for "no-twos-or-threes" harmony after the extremely wide [[5/1|harmonic 5]] and the awkwardly narrow [[7/5|small septimal tritone]], and being a relatively strong [[consonance]] by most metrics.
 
The simplest chord without 2's or 3's that sounds consonant and stable is 11:13:17, so it might be viewed as the fundamental sonority of no-twos-or-threes music. A neutral ninth-reduced stack of four 121/85's fall short of [[17/13]] by the small comma 2093663/2088025. Tempering out this comma together with the additional comma 54925/54043 results in [[catfish]] temperament, which can be viewed as an analog to [[meantone]]. It possesses [[mos scale]]s of the families 2L 3s<11/5>, 2L 5s<11/5>, 2L 7s<11/5>, and 9L 2s<11/5>.
 
== Ed11/5-edo correspondence ==
{|class="wikitable"
|-
! Ed11/5
! Edo
|-
| [[8ed11/5]]
| [[7edo]]
|-
| [[9ed11/5]]
| [[8edo]]
|-
| [[16ed11/5]]
| [[14edo]]
|-
| [[18ed11/5]]
| [[16edo]]
|-
| [[24ed11/5]]
| [[21edo]]
|-
| [[25ed11/5]]
| [[22edo]]
|-
| [[27ed11/5]]
| [[24edo]]
|-
| [[33ed11/5]]
| [[29edo]]
|-
| [[50ed11/5]]
| [[44edo]]
|}
 
== Individual pages for ed11/5's ==
 
{| class="wikitable center-all"
|+ style=white-space:nowrap | 0…99
| [[0ed11/5|0]]
| [[1ed11/5|1]]
| [[2ed11/5|2]]
| [[3ed11/5|3]]
| [[4ed11/5|4]]
| [[5ed11/5|5]]
| [[6ed11/5|6]]
| [[7ed11/5|7]]
| [[8ed11/5|8]]
| [[9ed11/5|9]]
|-
| [[10ed11/5|10]]
| [[11ed11/5|11]]
| [[12ed11/5|12]]
| [[13ed11/5|13]]
| [[14ed11/5|14]]
| [[15ed11/5|15]]
| [[16ed11/5|16]]
| [[17ed11/5|17]]
| [[18ed11/5|18]]
| [[19ed11/5|19]]
|-
| [[20ed11/5|20]]
| [[21ed11/5|21]]
| [[22ed11/5|22]]
| [[23ed11/5|23]]
| [[24ed11/5|24]]
| [[25ed11/5|25]]
| [[26ed11/5|26]]
| [[27ed11/5|27]]
| [[28ed11/5|28]]
| [[29ed11/5|29]]
|-
| [[30ed11/5|30]]
| [[31ed11/5|31]]
| [[32ed11/5|32]]
| [[33ed11/5|33]]
| [[34ed11/5|34]]
| [[35ed11/5|35]]
| [[36ed11/5|36]]
| [[37ed11/5|37]]
| [[38ed11/5|38]]
| [[39ed11/5|39]]
|-
| [[40ed11/5|40]]
| [[41ed11/5|41]]
| [[42ed11/5|42]]
| [[43ed11/5|43]]
| [[44ed11/5|44]]
| [[45ed11/5|45]]
| [[46ed11/5|46]]
| [[47ed11/5|47]]
| [[48ed11/5|48]]
| [[49ed11/5|49]]
|-
| [[50ed11/5|50]]
| [[51ed11/5|51]]
| [[52ed11/5|52]]
| [[53ed11/5|53]]
| [[54ed11/5|54]]
| [[55ed11/5|55]]
| [[56ed11/5|56]]
| [[57ed11/5|57]]
| [[58ed11/5|58]]
| [[59ed11/5|59]]
|-
| [[60ed11/5|60]]
| [[61ed11/5|61]]
| [[62ed11/5|62]]
| [[63ed11/5|63]]
| [[64ed11/5|64]]
| [[65ed11/5|65]]
| [[66ed11/5|66]]
| [[67ed11/5|67]]
| [[68ed11/5|68]]
| [[69ed11/5|69]]
|-
| [[70ed11/5|70]]
| [[71ed11/5|71]]
| [[72ed11/5|72]]
| [[73ed11/5|73]]
| [[74ed11/5|74]]
| [[75ed11/5|75]]
| [[76ed11/5|76]]
| [[77ed11/5|77]]
| [[78ed11/5|78]]
| [[79ed11/5|79]]
|-
| [[80ed11/5|80]]
| [[81ed11/5|81]]
| [[82ed11/5|82]]
| [[83ed11/5|83]]
| [[84ed11/5|84]]
| [[85ed11/5|85]]
| [[86ed11/5|86]]
| [[87ed11/5|87]]
| [[88ed11/5|88]]
| [[89ed11/5|89]]
|-
| [[90ed11/5|90]]
| [[91ed11/5|91]]
| [[92ed11/5|92]]
| [[93ed11/5|93]]
| [[94ed11/5|94]]
| [[95ed11/5|95]]
| [[96ed11/5|96]]
| [[97ed11/5|97]]
| [[98ed11/5|98]]
| [[99ed11/5|99]]
|}
 
[[Category:Ed11/5's| ]] <!-- main article -->
[[Category:Lists of scales]]