Lumatone mapping for 27edo
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There are many conceivable ways to map 27edo onto the Lumatone keyboard. Only one, however, agrees with the Standard Lumatone mapping for Pythagorean.
6
11
7
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0
3
8
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18
23
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11
4
9
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24
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24
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Keep in mind that 27edo is a superpyth temperament, so 5/4 is mapped to the interval of an augmented second (e.g. a 5/4 above C is D♯). Therefore if 0 is 1/1 on this mapping, 9 represents 5/4 and you can find that by going over to 5 (e.g. C → D) and then going up to 9 (D → D♯). If you want root-3rd-5th triads to be accessible in a more intuitive way, the tetracot mapping may be preferable.
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Other alternatives to this include a mapping derived from a Lumatone mapping for neutral thirds scales:
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Or this rotated version of the above, which resembles the Lumatone mapping for 24edo in the official manual:
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If you want to maximise your range, the myna one is the widest one that still covers the whole gamut, spanning 8 octaves in its most compressed MOS.
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