Lumatone mapping for 18edo: Difference between revisions

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== Wide fifth ==

7\18 produces a [[5L 3s]]-based Jankó mapping.

7\18 produces a [[5L 3s]]-based Jankó mapping. [[Bryan Deister]] uses this mapping in [https://www.youtube.com/shorts/-oi5eJA65Zc Waltz in 18edo].

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== Flat neutral thirds ==

5\18 produces a [[4L 3s]]-based Jankó mapping.

5\18 produces a [[4L 3s]]-based Jankó mapping. [[Bryan Deister]] has demonstrated this mapping in [https://www.youtube.com/shorts/c26Yp_aMgDw ''Lament in 18edo''] (2025).

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This can also be compressed down to a [[3L 1s]] mapping that is useful if you want to keep octaves as close to horizontal as possible.

== Pseudo-Isomorphic Pseudo-Diatonic ==

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. Alternatively, it can be interpreted as the 4L 3s Janko layout above, but with a duplicate of note 0 added, which allows it to support both the 4L 3s scale (3:2 step ratio) and a 5L 1s<sub>1</sub> 1s<sub>2</sub> MODMOS scale (3:2:1 step ratio). This is demonstrated in [[Bryan Deister]]'s [https://www.youtube.com/shorts/hNmse4IUWL0 ''18edo improv''] (2025).

@@ Line 2: / Line 2: @@
 == Wide fifth ==
-\18 produces a [[5L&nbsp;3s]]-based Jankó mapping.
+\18 produces a [[5L&nbsp;3s]]-based Jankó mapping. [[Bryan Deister]] uses this mapping in [https://www.youtube.com/shorts/-oi5eJA65Zc Waltz in 18edo].
 {{Lumatone EDO mapping|n=18|start=0|xstep=3|ystep=-2}}
@@ Line 10: / Line 10: @@
 == Flat neutral thirds ==
-\18 produces a [[4L&nbsp;3s]]-based Jankó mapping.
+\18 produces a [[4L&nbsp;3s]]-based Jankó mapping. [[Bryan Deister]] has demonstrated this mapping in [https://www.youtube.com/shorts/c26Yp_aMgDw ''Lament in 18edo''] (2025).
 {{Lumatone EDO mapping|n=18|start=0|xstep=3|ystep=-1}}
@@ Line 16: / Line 16: @@
 This can also be compressed down to a [[3L&nbsp;1s]] mapping that is useful if you want to keep octaves as close to horizontal as possible.
 {{Lumatone EDO mapping|n=18|start=16|xstep=5|ystep=-2}}
+== Pseudo-Isomorphic Pseudo-Diatonic ==
+A pseudo-isomorphic pseudo-diatonic mapping for [[18edo]] that duplicates note 0 (as note 18) enables diatonic playing while keeping octaves level &mdash; it is the [[19edo]] diatonic layout, but with only 18 unique notes per octave. Alternatively, it can be interpreted as the 4L&nbsp;3s Janko layout above, but with a duplicate of note 0 added, which allows it to support both the 4L&nbsp;3s scale (3:2 step ratio) and a 5L&nbsp;1s<sub>1</sub>&nbsp;1s<sub>2</sub> MODMOS scale (3:2:1 step ratio). This is demonstrated in [[Bryan Deister]]'s [https://www.youtube.com/shorts/hNmse4IUWL0 ''18edo improv''] (2025).
+{{Lumatone EDO mapping|n=19|start=-2|xstep=3|ystep=-1}}
 {{Navbox Lumatone}}