4L 5s: Difference between revisions

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{{Infobox MOS
{{Infobox MOS
| Name = gramitonic
| Name = orwelloid
| Periods = 1
| Periods = 1
| nLargeSteps = 4
| nLargeSteps = 4
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'''4L 5s''' refers to the structure of [[MOS scales]] whose generator falls between 2\9 (two degrees of [[9edo|9edo]] = approx. 266.667¢) and 1\4 (one degree of [[4edo|4edo]] = 300¢).
'''4L 5s''' refers to the structure of [[MOS scales]] whose generator falls between 2\9 (two degrees of [[9edo|9edo]] = approx. 266.667¢) and 1\4 (one degree of [[4edo|4edo]] = 300¢).
== Names ==
== Names ==
The [[TAMNAMS]] name for this pattern is '''gramitonic''' (from ''grave minor third'').
The [[TAMNAMS]] name for this pattern is '''orwelloid''' (named after the abstract temperament [[orwell]]).
== Notation ==
== Notation ==


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== Intervals ==
== Intervals ==
Note: In TAMNAMS, a k-step interval class in 4L 5s may be called a "k-step", "k-mosstep", or "k-orstep". 1-indexed terms such as "mos(k+1)th" are discouraged for non-diatonic mosses.
Note: In TAMNAMS, a k-step interval class in orwelloid may be called a "k-step", "k-mosstep", or "k-orstep". 1-indexed terms such as "mos(k+1)th" are discouraged for non-diatonic mosses.


== Tuning ranges ==
== Tuning ranges ==
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=== Parasoft ===
=== Parasoft ===


Parasoft tunings of 4L 5s have a step ratio between 4/3 and 3/2, implying a generator sharper than 7\31 = 270.97¢ and flatter than 5\22 = 272.73¢.
Parasoft tunings of orwelloid have a step ratio between 4/3 and 3/2, implying a generator sharper than 7\31 = 270.97¢ and flatter than 5\22 = 272.73¢.


In parasoft 4L 5s, the generator (major mosthird) is an approximate [[7/6]], the major mosfifth is an approximate but rather flat [[11/8]], the minor mosfourth is an approximate [[5/4]], and the major mossixth is an approximate [[3/2]].
In parasoft orwelloid, the generator (major mosthird) is an approximate [[7/6]], the major mosfifth is an approximate but rather flat [[11/8]], the minor mosfourth is an approximate [[5/4]], and the major mossixth is an approximate [[3/2]].


Parasoft 4L 5s EDOs include [[22edo]], [[31edo]], [[53edo]], and [[84edo]].
Parasoft orwelloid EDOs include [[22edo]], [[31edo]], [[53edo]], and [[84edo]].
* [[22edo]] can be used to make large and small steps more distinct (the step ratio is 3/2).
* [[22edo]] can be used to make large and small steps more distinct (the step ratio is 3/2).
* [[31edo]] can be used for its nearly pure [[5/4]].
* [[31edo]] can be used for its nearly pure [[5/4]].
* [[53edo]] can be used for its nearly pure [[3/2]] and good [[5/4]].
* [[53edo]] can be used for its nearly pure [[3/2]] and good [[5/4]].


The sizes of the generator, large step and small step of 4L 5s are as follows in various parasoft 4L 5s tunings.  
The sizes of the generator, large step and small step of orwelloid are as follows in various parasoft orwelloid tunings.  
{| class="wikitable right-2 right-3 right-4 right-5 right-6 right-7"
{| class="wikitable right-2 right-3 right-4 right-5 right-6 right-7"
|-
|-
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[[Category:MOS Scales]]
[[Category:MOS Scales]]
[[Category:9-tone scales]]
[[Category:9-tone scales]]
[[Category:Gramitonic]] <!-- main article -->
[[Category:Orwelloid]] <!-- main article -->