Lumatone mapping for 39edo: Difference between revisions

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The [[Lumatone mapping for amity]] is also above average at putting good intervals close together, and makes chromatic runs much easier than the previous two layouts.

== Familia ==

Related to amity is [[Amity_family#Familia|familia]]. [[Bryan Deister]] has demonstrated a [[3L 4s]] (10:3 step ratio) layout for this, in [https://www.youtube.com/shorts/1T_xrZpUslQ ''39edo improv''] (2025). Right by 1 key (10\39) is a somewhat flat classic minor third ~[[6/5]], while down-right by 1 key (3\39) is an inconsistently mapped sharp diptolmeic chromatic semitone (~[[25/24]]), which means that right 1 key + down-right 1 key (total 13\39) yields a sharp (400{{c}}) classic major third ~[[5/4]]). The range is six octaves, although the octaves slope down enough to cause a vertical wraparound.

== Semiquartal (immunity) ==

The [[immunity]] mapping gives excellent range, but the resulting [[5L 4s]] scale has a 7:1 step ratio, which makes it very lopsided.

The [[immunity]] mapping gives excellent range (over 6⅓ octaves), but the resulting [[5L 4s]] scale has a 7:1 step ratio, which makes it very lopsided; on the other hand, the octaves slope up in this mapping more gently than they slope down on the previous four mappings.

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 The [[Lumatone mapping for amity]] is also above average at putting good intervals close together, and makes chromatic runs much easier than the previous two layouts.
 {{Lumatone EDO mapping|n=39|start=0|xstep=6|ystep=-1}}
+== Familia ==
+Related to amity is [[Amity_family#Familia|familia]]. [[Bryan Deister]] has demonstrated a [[3L&nbsp;4s]] (10:3 step ratio) layout for this, in [https://www.youtube.com/shorts/1T_xrZpUslQ ''39edo improv''] (2025). Right by 1 key (10\39) is a somewhat flat classic minor third ~[[6/5]], while down-right by 1 key (3\39) is an inconsistently mapped sharp diptolmeic chromatic semitone (~[[25/24]]), which means that right 1 key + down-right 1 key (total 13\39) yields a sharp (400{{c}}) classic major third ~[[5/4]]). The range is six octaves, although the octaves slope down enough to cause a vertical wraparound.
+{{Lumatone EDO mapping|n=39|start=0|xstep=10|ystep=-7}}
 == Semiquartal (immunity) ==
-The [[immunity]] mapping gives excellent range, but the resulting [[5L&nbsp;4s]] scale has a 7:1 step ratio, which makes it very lopsided.
+The [[immunity]] mapping gives excellent range (over 6⅓ octaves), but the resulting [[5L&nbsp;4s]] scale has a 7:1 step ratio, which makes it very lopsided; on the other hand, the octaves slope up in this mapping more gently than they slope down on the previous four mappings.
 {{Lumatone EDO mapping|n=39|start=21|xstep=8|ystep=-1}}
 {{Navbox Lumatone}}