Xenharmonic Wiki

Lumatone mapping for 19edo

Revision as of 07:26, 27 September 2025 by Lucius Chiaraviglio (talk | contribs) (→Diatonic: Add Bryan Deister's pseudo-diatonic pseudo-isomorphic mapping)

There are many conceivable ways to map 19edo onto the onto the Lumatone keyboard. Only one, however, agrees with the Standard Lumatone mapping for Pythagorean.

Diatonic

This is "Preset 4 — 19-ET Bosanquet" in version 1.0 of the official manual, and "Preset 5 — 19-EDO Bosanquet" in version 1.21.

 
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Pseudo-Diatonic Pseudo-Isomorphic

A pseudo-isomorphic pseudo-diatonic mapping for 18edo that duplicates note 0 (as note 18) enables diatonic playing while keeping octaves level — it is the 19edo diatonic layout, but with only 18 unique notes per octave. This is demonstrated in Bryan Deister's 18edo improv (2025).

 
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Hanson

The 3L 1s Hanson mapping is a good option if you want to extend your range while making well-tuned chords easy to play. This mapping works especially well since 19edo can be conceptualised as a chain of essentially pure 6/5s.

 
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Semiquartal

The 4L 1s mapping is also an excellent option, which also extends the range over the standard layout and makes the diatonic scale easier to play than on the Hanson layout.

 
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Sensi

The Lumatone mapping for sensi is also another option, putting the notes of minor and major chords extremely close to each other:

 
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Magic

The Magic mapping has an even wider range and makes 5-limit chords just as easy to play, but the 3L 1s scale is somewhat lopsided with its 6:1 step ratio and higher limit intervals require more awkward finger stretches.

 
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The 1L 2s layout is even more efficient in terms of range, but the chroma goes downwards.

 
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