Lumatone mapping for slendric
This is one proposed mapping of slendric temperament to the Lumatone keyboard. 6 complete octaves are available, and modulation to distant keys is possible.
The keys marked "c" are one chroma up from 1/1, representing both 64/63 and 49/48. They keys marked "-c" are one chroma down from 1/1 (so 63/32 and 96/49).
The same mapping could be used for any extension of slendric that has the same period and generator, including Cynder, Rodan, and Guiron.
The differences between the extensions of slendric to the prime 5 can be visualized on this keyboard.
- Cynder tempers out 81/80, so 9/8 above 9/8 is equivalent to 5/4 so 5/4 is mapped to the key marked "X".
- Rodan, on the other hand, makes 81/80 the same as the chroma c, so 5/4 is instead mapped to the key mapped "Y", one chroma lower than "X".
- Guiron maps 5/4 to the key marked "Z".
Cynder and guiron intersect in 36edo, so in 36edo both "X" and "Z" represent 5/4. Rodan and guiron intersect in 41edo, so in 41edo both "Y" and "Z" represent 5/4.
If the above layout is the "compressed" one then the below is an "expanded" one which has a range of only 5 octaves, but whose layout may make more intuitive sense: