31/24: Difference between revisions

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'''31/24'''
{{Infobox Interval
| Name = tricesimoprimal ultramajor third, tricesimoprimal subfourth
| Color name = 31o3, thiwo 3rd
| Sound = jid_31_24_pluck_adu_dr220.mp3
}}
In [[31-limit]] [[just intonation]], '''31/24''' is either the '''tricesimoprimal ultramajor third''' or '''tricesimoprimal subfourth'''. It is sharp of the [[81/64|Pythagorean major third (81/64)]] by [[248/243]], and flat of the [[4/3|perfect fourth (4/3)]] by [[32/31]]. It can be used as a [[generator]] tuning for the [[sensi]] temperament, and more accurate interpretations of the extended harmony of the [[5-limit]] [[sensipent]] temperament. In this context, it is equated to its complement relative to [[5/3]], that is, [[40/31]].


= 2<span style="font-size: 80%; vertical-align: super;">-3</span> * 3<span style="font-size: 80%; vertical-align: super;">-1</span> * 31
In general, it can serve as an alternative sharp [[major third (interval region)|supermajor third]] to [[9/7]], which is flat of it by [[217/216]], for greater flexibility in [[otonal]] chords containing intervals that do not have a 7 in their denominator.


443.0806 cents
== Approximation ==
31/24 is approximated by [[19edo|7\19]], and is extremely close to [[65edo|24\65]] (being just 0.0036{{c}} sharp of it).


[[File:jid_31_24_pluck_adu_dr220.mp3]] [[:File:jid_31_24_pluck_adu_dr220.mp3|sound sample]]
== See also ==
* [[48/31]] – its [[octave complement]]
* [[36/31]] – its [[fifth complement]]


The sensi supermajor third, 31/24, can be used as a generator tuning for [[Sensipent_family#Sensi|sensi temperament]], especially for the 5-limit sensipent temperament. It is very close to the 24\[[65edo|65]] generator.
[[Category:Third]]
[[Category:Supermajor third]]
[[Category:Fourth]]
[[Category:Subfourth]]
[[Category:Interseptimal intervals]]
[[Category:Naiadic]]