8L 7s: Difference between revisions

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{{Infobox MOS}}
{{Infobox MOS}}
{{MOS intro}}
{{MOS intro}}
This scale is the chromatic scale of [[Opossum]] temperament
This scale is the chromatic scale of [[Opossum]] temperament, where the tetrad 1/1-[[6/5]]-[[10/7]]-[[12/7]] (0¢-316¢-617¢-933¢) can be formed by by stacking the dark generator 2, 4, and 6 times above the root. 8L 7s approximates this tetrad from 0¢-300¢-600¢-900¢ to 0¢-320¢-640¢-960¢.{{Scale tree}}
 
Under opossum temperament, the tetrad 1/1-[[6/5]]-[[10/7]]-[[12/7]] (0¢-316¢-617¢-933¢) can be formed by by stacking the dark generator 2, 4, and 6 times above the root. 8L 7s approximates this tetrad from 0¢-300¢-600¢-900¢ to 0¢-320¢-640¢-960¢.
{{Scale tree}}
[[Category:Opossum]]
[[Category:Opossum]]
[[Category:Abstract MOS patterns]]
[[Category:Abstract MOS patterns]]

Revision as of 23:35, 3 March 2024

↖ 7L 6s ↑ 8L 6s 9L 6s ↗
← 7L 7s 8L 7s 9L 7s →
↙ 7L 8s ↓ 8L 8s 9L 8s ↘
┌╥╥┬╥┬╥┬╥┬╥┬╥┬╥┬┐
│║║│║│║│║│║│║│║││
│││││││││││││││││
└┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
Scale structure
Step pattern LLsLsLsLsLsLsLs
sLsLsLsLsLsLsLL
Equave 2/1 (1200.0 ¢)
Period 2/1 (1200.0 ¢)
Generator size
Bright 13\15 to 7\8 (1040.0 ¢ to 1050.0 ¢)
Dark 1\8 to 2\15 (150.0 ¢ to 160.0 ¢)
TAMNAMS information
Related to 7L 1s (pine)
With tunings 1:1 to 2:1 (soft-of-basic)
Related MOS scales
Parent 7L 1s
Sister 7L 8s
Daughters 15L 8s, 8L 15s
Neutralized 1L 14s
2-Flought 23L 7s, 8L 22s
Equal tunings
Equalized (L:s = 1:1) 13\15 (1040.0 ¢)
Supersoft (L:s = 4:3) 46\53 (1041.5 ¢)
Soft (L:s = 3:2) 33\38 (1042.1 ¢)
Semisoft (L:s = 5:3) 53\61 (1042.6 ¢)
Basic (L:s = 2:1) 20\23 (1043.5 ¢)
Semihard (L:s = 5:2) 47\54 (1044.4 ¢)
Hard (L:s = 3:1) 27\31 (1045.2 ¢)
Superhard (L:s = 4:1) 34\39 (1046.2 ¢)
Collapsed (L:s = 1:0) 7\8 (1050.0 ¢)

8L 7s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 8 large steps and 7 small steps, repeating every octave. 8L 7s is a child scale of 7L 1s, expanding it by 7 tones. Generators that produce this scale range from 1040 ¢ to 1050 ¢, or from 150 ¢ to 160 ¢. This scale is the chromatic scale of Opossum temperament, where the tetrad 1/1-6/5-10/7-12/7 (0¢-316¢-617¢-933¢) can be formed by by stacking the dark generator 2, 4, and 6 times above the root. 8L 7s approximates this tetrad from 0¢-300¢-600¢-900¢ to 0¢-320¢-640¢-960¢.Template:Scale tree