18edo: Difference between revisions
From Xenharmonic Reference
Created page with "{{problematic}} '''18edo''', or 18 equal divisions of the octave, is the equal tuning featuring steps of (1200/18) ~= 66.7 cents, 18 of which stack to the octave 2/1. With the sharp fifth 733.3c and the flat fifth 666.7c, 18edo is often considered the quintessential straddle-3 edo and the straddle-3 version of 12edo. {{Cat|Edos}}" |
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'''18edo''', or 18 equal divisions of the octave, is the equal tuning featuring steps of (1200/18) ~= 66.7 cents, 18 of which stack to the octave 2/1. | '''18edo''', or 18 equal divisions of the octave, is the equal tuning featuring steps of (1200/18) ~= 66.7 cents, 18 of which stack to the octave 2/1. | ||
With the sharp fifth 733.3c and the flat fifth 666.7c, 18edo is often considered the quintessential [[straddle primes|straddle-3]] edo and the straddle-3 version of [[12edo]]. | With the sharp fifth 733.3c and the flat fifth 666.7c, 18edo is often considered the quintessential [[straddle primes|straddle-3]] edo and the straddle-3 version of [[12edo]]. It does not approximate low harmonics well (except 9 and debatably 5), but it has the following interesting scales: | ||
* Straddle-3 diatonic (5L1m1s), 3331332 or 3332331 | |||
* [[Oneirotonic]], 33133131 | |||
* [[Smitonic]], 3323232 | |||
* [[Taric]], 2222122221 and pentachordal taric, 2221222221 | |||
{{Cat|Edos}} | {{Cat|Edos}} | ||
Revision as of 04:25, 23 February 2026
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18edo, or 18 equal divisions of the octave, is the equal tuning featuring steps of (1200/18) ~= 66.7 cents, 18 of which stack to the octave 2/1.
With the sharp fifth 733.3c and the flat fifth 666.7c, 18edo is often considered the quintessential straddle-3 edo and the straddle-3 version of 12edo. It does not approximate low harmonics well (except 9 and debatably 5), but it has the following interesting scales:
- Straddle-3 diatonic (5L1m1s), 3331332 or 3332331
- Oneirotonic, 33133131
- Smitonic, 3323232
- Taric, 2222122221 and pentachordal taric, 2221222221
