A-team: Difference between revisions

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==="Superpythagorean" tunings for A-Team===
==="Superpythagorean" tunings for A-Team===
In general sharper subfourths are better if you don't care about approximating 5/4 and only care about optimizing the 4:9:21 triad. One tradeoff is that small steps in the oneirotonic scale get smaller than 1/3-tones (as in 18edo) and become quarter-tones (as in 23edo) and thus become less melodically recognizable.
In general sharper subfourths are better if you don't care about approximating 5/4 and only care about optimizing the 4:9:21 triad.  Apart from that, there's no common JI interpretation shared by these sharper tunings. One tradeoff is that small steps in the oneirotonic scale get smaller than 1/3-tones (as in 18edo) and become quarter-tones (as in 23edo) and thus become less melodically recognizable.


By the time we get to [[23edo]], two tones represent 14/11 and 33/26, rather than 5/4.
[[23edo]] is a special beast with its own JI identifications, for example two tones represent 14/11 and 33/26, rather than 5/4, and J-O# becomes 5/3 rather than a 13/8. Best to treat it as its own thing?


[[18edo]] (466.67 cents) is an edge case, as it tempers out 81/80 but fails to approximate more diverse intervals with the same identifications used by 13edo and 44edo.
[[18edo]] (466.67 cents) is an edge case, as it tempers out 81/80 but fails to approximate more diverse intervals with the same identifications used by 13edo, 44edo or 23edo.