40/21: Difference between revisions
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+logical reasons for both d8 and M7 but let's just remove "small septimal diminished octave" since the term is out of nowhere |
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| Line 4: | Line 4: | ||
| Monzo = 3 -1 1 -1 | | Monzo = 3 -1 1 -1 | ||
| Cents = 1115.53281 | | Cents = 1115.53281 | ||
| Name = | | Name = acute major seventh | ||
| Color name = | | Color name = | ||
| FJS name = | | FJS name = M7<sup>5</sup><sub>7</sub> | ||
| Sound = jid_40_21_pluck_adu_dr220.mp3 | | Sound = jid_40_21_pluck_adu_dr220.mp3 | ||
}} | }} | ||
'''40/21''', is a [[7-limit]] interval | '''40/21''', is a [[7-limit]] interval measuring about 1115.5 cents. Despite being approximated by the diminished octave in systems like [[septimal meantone]], it is a major seventh in both [[Helmholtz-Ellis notation]] and [[Functional Just System]] because it is sharp of the [[Pythagorean major seventh (243/128)]] by [[5120/5103]]. | ||
== See also == | == See also == | ||
* [[21/20]] – its [[octave complement]] | * [[21/20]] – its [[octave complement]] | ||
* [[Gallery of just intervals]] | |||
[[ | [[Category:Interval]] | ||
[[ | [[Category:7-limit]] | ||
[[Category: | [[Category:Seventh]] | ||
[[Category:Major seventh]] | |||
Revision as of 10:27, 25 December 2020
| Interval information |
[sound info]
40/21, is a 7-limit interval measuring about 1115.5 cents. Despite being approximated by the diminished octave in systems like septimal meantone, it is a major seventh in both Helmholtz-Ellis notation and Functional Just System because it is sharp of the Pythagorean major seventh (243/128) by 5120/5103.