Lumatone mapping for 82edo

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There are many conceivable ways to map 82edo onto the onto the Lumatone keyboard. However, it has 2 mutually-exclusive rings of fifths, so the Standard Lumatone mapping for Pythagorean is not one of them.

Diatonic

You can use the b val instead, but this is barely distinguishable from a circulating system of 7edo and only covers about 2/3rds of the notes due to the size of the edo.

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There is an alternate diatonic scale that makes 5-limit chords easy to play, but it has a slight octave stretch. Since that means all notes are available in at least some of the octaves, this may actually be advantageous.

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Bischismic

The Bischismic mapping can cover the whole gamut, although it needs to be expanded from 2L 8s to 10L 2s to do so.

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Magic (Divination/Soothsaying) related Lumatone mappings

Bryan Deister has demonstrated a 8L 6s mapping of 82edo. Being even 82edo supports a semioctave period, with the diagassormisma (3042/3025) being tempered out in the patent val or the kalisma (9801/9800) being tempered out in the 82e val; this enables it to use the (somewhat sharp) septimal major third ~9/7 (as 30\82) as a generator (which would be contorted down to 41edo with a whole octave period), in a temperament like Soothsaying or Divination, but using the septimal major third as a generator instead of the classic major third ~5/4. (Since 82edo also supports actual Soothsaying in its patent val and actual Divination in its 82e val, it is also possible to use generator 26\82, the somewhat flat ~5/4, although the resulting 6L 4s scale is a bit more tricky to play using this layout.) The range is about 2¾ octaves with no missed notes, and the octaves slant down.

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Buzurgic/Dhanvantaric

To maximise your range, you can use the 8L 2s mapping generated by 9/82 and a half octave period (achieving a range slightly over three octaves, with a moderate upwards slant), but this is not particularly efficient at putting the best note combinations close to one-another. Despite not being designed with any temperament in mind, this mapping supports Buzurgic/Dhanvantaric temperament, because the rightward generator is 9\82, and 82edo tempers out the buzurgisma/dhanvantarisma (169/168), which causes this generator to function as both ~14/13 and ~13/12; two of them make a somewhat sharp septimal minor third (~7/6). An article dedicated to this temperament is not currently available, but an article about Buzurgismic chords is available. The choice of whether to use 4\82 (upwards generator) or 5\82 (down-right generator) as the second generator, or to use no second generator and downgrade the temperament to rank-2, depends upon what one wants to do with the 11th harmonic. The patent val of 82edo maps a mildly sharp al-Farabi quarter tone (~33/32) to the upwards generator 4\82; four of these make a slightly sharp ~8/7. Two rightward generators plus one or two upwards generators yield the classic minor and major thirds (~6/5 and ~5/4), respectively; four rightward generators plus three upwards generators yield the near just perfect fifth (~3/2). The 82e val maps a rather flat pentacircle minor second (~22/21) to the down-right generator 5\82; four of them make a slightly flat tridecimal minor third (~13/11, made fairly accurate by cancellation of the errors in the wart-modified 11th harmonic and the patent 13th harmonic, and which would otherwise have to be mapped as ~19/16). However, use of the down-right generator in combination with the rightwards generator to produce common chords tends to require going rightward extra steps and then subtract down-right generators to get the effect of the upwards generator, making this a less attractive choice of secondary generator.

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