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 |
m Fix a link |
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'''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]]. | '''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 [[243/128|Pythagorean major seventh (243/128)]] by [[5120/5103]]. | ||
== See also == | == See also == | ||
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.