28/15: Difference between revisions
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{{Infobox Interval | {{Infobox Interval | ||
| Name = septimal grave major seventh | |||
| Color name = zg8, zogu octave | |||
| Name = septimal | |||
| Color name = | |||
| Sound = jid_28_15_pluck_adu_dr220.mp3 | | Sound = jid_28_15_pluck_adu_dr220.mp3 | ||
}} | }} | ||
'''28/15''', the '''septimal | '''28/15''' is a [[7-limit]] [[just intonation]] interval of about 1080.6 [[cent]]s. It is well approximated by [[10edo]] (9\10). | ||
== Terminology == | |||
Despite being approximated by the major seventh in systems like [[septimal meantone]], and even being called the '''septimal grave major seventh''' by some musicians, 28/15 is a diminished octave in just intonation notation systems such as [[Sagittal notation]], [[Helmholtz-Ellis notation]] and the [[Functional Just System]], viewed as the Pythagorean diminished octave ([[4096/2187]]) altered by [[5120/5103]]. | |||
== Approximation == | |||
{{Interval edo approximation|28/15}} | |||
== See also == | == See also == | ||
* [[15/14]] – its [[octave complement]] | |||
* [[Gallery of just intervals]] | * [[Gallery of just intervals]] | ||
[[Category:Seventh]] | [[Category:Seventh]] | ||
[[Category:Major seventh]] | [[Category:Major seventh]] | ||
[[Category:Octave]] | |||
[[Category: | [[Category:Diminished octave]] | ||
[[Category: | {{todo|improve synopsis}} | ||