User:Inthar/4L 3s

From Xenharmonic Wiki
Jump to navigation Jump to search

Modal harmony

The seven modes are, from brightest to darkest:

Nerevarine mode LLSLSLS
Vivecan mode LSLLSLS
Lorkhanic mode LSLSLLS
Sothic mode LSLSLSL
Kagrenacan mode SLLSLSL
Almalexian mode SLSLLSL
Dagothic mode SLSLSLL

Modally, the highest to lowest entropy scale degrees (unison = 1) are:

  • 2 and 7 (equally): .99 bits
  • 4 and 5 (equally): .86 bits
  • 3 and 6 (equally): .59 bits

If a scale degree is high entropy it tends to be the most informative on average; the modes that have this interval as major and minor respectively are roughly a 50-50 split. This tells us that unlike in the diatonic scale, thirds and sixths are the least informative in distinguishing smitonic modes. On the other hand, seconds, fourths and sevenths are highly informative.

11edo smitonic

The intervals of the symmetric LsLsLsL mode (harmonics in bold): Sortable table of major and minor intervals in hypohard smitonic tunings:

Degree 11edo value Note name on J #Gens up
unison 0\11, 0.0 J 0
minor mos2nd 1\11, 109.1 K@ +4
major mos2nd 2\11, 218.2 K -3
perf. mos3rd 3\11, 327.3 L +1
aug. mos3rd 4\11, 436.4 L& -6
minor mos4th 4\11, 436.4 M@ +5
major mos4th 5\11, 545.5 M -2
minor mos5th 6\11, 656.6 N +2
major mos5th 7\11, 763.6 N& -5
dim. mos6th 7\11, 763.6 O@ +6
perf. mos6th 8\11, 872.7 O -1
minor mos7th 9\11, 981.8 P +3
major mos7th 10\11, 1090.9 P& -4
  • consonances: major 2nd, minor 3rd, sharp fourth, the minor seventh
  • dissonances: minor 2nd, major 3nd, flat fifth, minor 6th, major seventh

18edo smitonic

Degree 18edo value Note name on J #Gens up
unison 0\18, 0.0 J 0
chroma 1\18, 66.7 J& -7
dim. mos2nd 1\18, 66.7 K@@ +11
minor mos2nd 2\18, 133.3 K@ +4
major mos2nd 3\18, 200.0 K -3
aug. mos2nd 4\18, 266.7 K& -10
dim. mos3rd 4\18, 266.7 L@ +8
perf. mos3rd 5\18, 333.3 L +1
aug. mos3rd 6\18, 400.0 L& -6
doubly aug. mos3rd 7\18, 466.7 L&& -13
dim. mos4th 6\18, 400.0 M@@ +12
minor mos4th 7\18, 466.7 M@ +5
major mos4th 8\18, 533.3 M -2
aug. mos4th 9\18, 600.0 M& -9
dim. mos5th 9\18, 600.0 N@ +9
minor mos5th 10\18, 666.7 N +2
major mos5th 11\18, 733.3 N& -5
aug. mos5th 12\18, 800.0 N&& -12
doubly dim. mos6th 11\18, 733.3 O@@ +13
dim. mos6th 12\18, 800.0 O@ +6
perf. mos6th 13\18, 866.7 O -1
aug. mos6th 14\18, 933.3 O& -8
dim. mos7th 14\18, 933.3 P@ +10
minor mos7th 15\18, 1000.0 P +3
major mos7th 16\18, 1066.7 P& -4
aug. mos7th 17\18, 1133.3 P& -11
dim. mosoctave 17\18, 1133.3 J@ +7

Modal harmony

MODMOSes and chroma modification become more important. Use MODMOSes with SS = diminished mos3rd = 266.67¢. For example, rotations of LLLSLSS or LlSSLLS.

or 5L 1M 1S: LLMLLLS or LLSLLLM

Treat it as neutralized mavila antidiatonic?

Nejis?

  • 28:30:34:38:43:46:51:56 Dagothic neji
  • 14:16:17:19:23:26:28 might be a good neji smitonic chord. Adding a minor 4-mosstep, you get 28:32:34:38:41:46:52:56.