User:Eufalesio/Mappings of edos: Difference between revisions

Eufalesio (talk | contribs)
Eufalesio (talk | contribs)
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=== Helmholtzoids ===
=== Helmholtzoids ===
Have fifths a smidge flatter than just, along the optimal range for schismic. Up/down can be used for pc fractions.  
Have fifths a smidge flatter than just, along the optimal range for schismic and pontiac. Up/down can be used for pc fractions. The true mappings for 171 and 224's edostep are -53 fifths (transmercunison). 130 and 159 instead have a poma fraction as the only possible mapping.  


* 130 has a well rounded 13-limit with very good accuracy, usable all the way to the no-29 31-limit.
* 130 has a well rounded 13-limit with very good accuracy, usable all the way to the no-29 31-limit.
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|17:4
|17:4
|duphyperfourth
|duphyperfourth
|1/4perminor third
|upperminor third
|downpertritone
|downpertritone
|}
|}


=== Ultimate ===
=== Ultimate ===
Have fifths a smidge sharper than just, along the optimal range for cassaschismic. Up/down can be used for 3~5c deviations.
Have fifths a smidge sharper than just, along the optimal range for cassaschismic. Up/down can be used for pc fractions.  


{{Databox|The true mappings of the up/down are contrived.|41-comma (transsuperunison) for 217edo<br>53-comma - half poma (transsemisubunison) for 270edo<br>135-comma for 311edo<br>also -41 hemififths (sesquisubbarbaric) for 270edo and 311edo}}
* 217 has a well rounded 31-limit with great accuracy.
* 217 has a well rounded 31-limit with great accuracy.
* 270 has an astonishingly accurate yazalathana. Usable in higher limits.
* 270 has an astonishingly accurate yazalathana. Usable in higher limits.