4L 3s: Difference between revisions

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4L 3s refers to the structure of moment of symmetry scales with generators ranging from 1\4edo (one degree of [[4edo]], 300¢) to 2\7edo (two degrees of [[7edo]], or approx. 342.857¢). The spectrum looks like this:
{{Interwiki
|en=4L 3s
|es=
|de=
|ja=4L 3s
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{{Infobox MOS}}


{| class="wikitable"
{{MOS intro}}
|-
4L 3s can be seen as a [[Warped diatonic|warped diatonic scale]], where one large step of diatonic ([[5L 2s]]) is replaced with a small step.
! colspan="8" | Generator
 
! | Tetrachord
== Name ==
! | g in cents
{{TAMNAMS name}}
! | 2g
 
! | 3g
== Scale properties ==
! | 4g
{{TAMNAMS use}}
! | Comments
 
|-
=== Intervals ===
| | 1\4
{{MOS intervals}}
| |
 
| |
=== Generator chain ===
| |
{{MOS genchain}}
| |
 
| |
=== Modes ===
| |
{{MOS mode degrees}}
| |
 
| | 1 0 1
==== Proposed names ====
| | 300
Alexandru Ianu ([[User:Ayceman|Ayceman]])<ref>Description of ''Sylvian Moon Dance'' mentioning the naming proposal https://musescore.com/user/36772625/scores/6700443 – The theme relates to the mystical nature of the Tribunal and TES lore, which fits smitonic.</ref> has proposed the following mode names relating to the Almsivi in Morrowind (TES):
| | 600
{{MOS modes
| | 900
| Mode Names=Nerevarine $
| | 0
Vivecan $
| style="text-align:center;" |
Lorkhanic $
|-
Sothic $
|
Kagrenacan $
|
Almalexian $
|
Dagothic $
|
}}
|
 
|
== Theory ==
|
=== Low harmonic entropy scales ===
|9\35
There are two notable harmonic entropy minima:
|8 1 8
* [[Kleismic family|Kleismic temperament]], in which the generator is 6/5 and 6 of them make a 3/1.
|308.571
* [[myna|Myna temperament]], in which the generator is also 6/5 but it takes 10 of them to make a 6/1, meaning that a larger MOS than 4L&nbsp;3s is required to reach 3/2 or 4/3.
|617.143
 
|925.714
=== Temperament interpretations ===
|34.286
{{main|4L&nbsp;3s/Temperaments}}
|
4L&nbsp;3s has the following temperament interpretations:
|-
* [[Sixix]], with generators around 338.6{{c}}.
| |
* [[Orgone]], with generators around 323.4{{c}}.
| |
* [[Kleismic]], with generators around 317{{c}}.
| |
 
| |
Other temperaments, such as [[amity]] and [[myna]], require more than 7 pitches to contain the concordant chords optimized by these temperaments. If restricted to a rank-2 approach, a [[MODMOS]] or a larger MOS gamut is necessary to access these pitches.
| |
 
| |
== Tuning ranges ==
| | 8\31
{{Todo|Populate|comment=Populate with JI ratios from prior edits of this page.|inline=1}}
| |
 
| | 7 1 7
=== Simple tunings ===
| | 309.677
The simplest tunings are those with step ratios 2:1, 3:1, and 3:2, producing 11edo, 15edo, and 18edo, respectively.
| | 619.355
{{MOS tunings}}
| | 929.023
 
| | 38.71
=== Parasoft tunings ===
| style="text-align:center;" | [[Myna]] is around here
Parasoft smitonic tunings can be considered "meantone smitonic" since it has the following features of [[meantone]] diatonic tunings:
|-
 
| |
* The major 1-mosstep, or large step, is around [[10/9]] to [[9/8]], thus making it a "meantone".
| |
* The augmented 2-mosstep is around the size of a meantone-sized major 3rd and can be used as a stand-in for such.
| |
 
| |
These tunings have a major 4-mosstep and minor 4-mosstep that are about equally off a just 3/2 (702{{c}}), and they have otherwise fairly convincing versions of both diatonic structure and tertian harmony, provided you frequently modify using the comma-like chromas. For this reason, parasoft might be the most accessible smitonic tuning range.
| |
 
| | 7\27
Edos include [[18edo]], [[25edo]], and [[43edo]]. Some key considerations include:
| |
 
| |
* 18edo can be used to make the large and small steps more distinct, or can be considered a distorted 19edo diatonic.
| | 6 1 6
** 18edo has a major 1-mosstep that is close to 9/8 (203{{c}}).
| | 311.111
** 18edo's major and minor 4-mossteps are both equally off from 12edo's diatonic perfect 5th (700{{c}}) by 33.3{{c}}.
| | 622.222
** 18edo is also more suited for conventionally jazz styles due to its 6-fold symmetry.
| | 933.333
* The augmented 2-mosstep of 25edo is very close to 5/4 (386{{c}}).
| | 44.444
{{MOS tunings|Step Ratios=3/2; 7/5; 4/3}}
| style="text-align:center;" |
 
|-
=== Hyposoft tunings ===
| |
Hyposoft smitonic tunings (3:2 to 2:1) are characterized by generators that are a supraminor 3rd, between 327{{c}} and 333{{c}}. By analogy of parasoft tunings being called "meantone smitonic", these tunings can be considered "[[Gentle region|neogothic]] smitonic" or "[[archy]] smitonic".
| |
 
| |
Edos include [[11edo]] (not shown), [[18edo]], and [[29edo]].
| |
 
| | 6\23
{{MOS tunings|Step Ratios=3/2; 5/3; 7/4}}
| |
 
| |
=== Hypohard tunings===
| |
Hypohard smitonic tunings (2:1 to 3:1) have generators between 320{{c}} and 327{{c}}. The major 1-mosstep, or large step, tends to approximate [[8/7]] (231{{c}}) and the major 3-mosstep tends to approximate [[11/8]] (551{{c}}). [[26edo]] approximates these two intervals very well. These JI approximations are associated with [[orgone]] temperament.
| | 5 1 5
 
| | 313.043
Other hypohard edos include [[11edo]] (not shown), [[15edo]] and [[37edo]].
| | 626.087
 
| | 939.13
{{MOS tunings|Step Ratios=3/1; 5/2; 7/3}}
| | 52.174
 
| style="text-align:center;" |
=== Parahard tunings ===
|-
Parahard smitonic tunings (3:1 to 4:1) have generators between 315.9{{c}} and 320{{c}}, putting it close to a pure 6/5 (316{{c}}). Stacking six generators and octave-reducing approximates 3/2 (702{{c}}), a diatonic perfect 5th, represented by the diminished 5-mosstep.
| |
 
| |
This range contains very accurate edos such as [[53edo]] and [[72edo]], and has very accurate approximations to many [[low-overtone JI]] intervals, namely basic [[5-limit]] ratios and some ratios involving 13. However, 4L 3s only has one interval of 3/2, so it's suggested to use a larger MOS, such as [[4L 7s]], to achieve 5-limit harmony.
| |
 
| | 5\19
These JI approximations are associated with [[kleismic]] temperament, through the 2.3.5.13 extension known as [[Kleismic family#Cata|cata]].
| |
 
| |
Parahard edos smaller than 53edo include [[15edo]] (not shown), [[19edo]], and [[34edo]].
| |
 
| |
{{MOS tunings|Step Ratios=4/1; 11/3; 7/2}}
| | 4 1 4
 
| | 315.789
== Scales ==
| | 631.579
* [[Orgone7]]
| | 947.368
* [[Cata7]]
| | 63.158
* [[Myna7]]
| style="text-align:center;" | L/s = 4
 
|-
== Scale tree==
| |
{{MOS tuning spectrum
| |
| 6/5 = [[Amity]]/[[hitchcock]]&nbsp;↑
| |
| 5/4 = [[Sixix]]
| |
| 4/3 = [[Supramin]]
| | 9\34
| 13/8 = Golden 4L&nbsp;3s (868.3282{{c}})
| |
| 12/5 = [[Hyperkleismic]]
| |
| 5/2 = [[Orgone]]
| |
| 13/5 = Golden superkleismic
| | 7 2 7
| 8/3 = [[Superkleismic]]
| | 317.647
| 11/3 = [[Hanson]]/[[keemun]]
| | 634.294
| 6/1 = [[Oolong]]/[[myna]]&nbsp;↓
| | 951.941
}}
| | 70.588
 
| style="text-align:center;" | [[Hanson]]/Keemun is around here
== Music ==
|-
* [[City of the Asleep]], [https://cityoftheasleep.bandcamp.com/album/an-amputated-elliptic-knob-of-the-cryptocurve-regenerates "An Amputated Elliptic Knob of the Cryptocurve Regenerates"] (Various orgone edos)
| |
* [[User:Ks26|ks26]], [https://www.youtube.com/watch?v=AEnEYk3X1as Ghost Bridge] (11edo)
| |
* [[User:Ayceman|Alexandru Ianu]], [https://youtu.be/81uZbsmbet8 Sylvian Moon Dance] (11edo) ([[:File:Sylvian_Moon_Dance.pdf|sheet music]])
| |
 
| |
== References ==
| |
<references />
| |
 
| |
[[Category:Smitonic|*]] <!--Main article-->
| |
[[Category:7-tone scales]]
| | pi 1 pi
| | 319.272
| | 638.545
| | 957.817
| | 77.089
| style="text-align:center;" | <span style="display: block; text-align: center;">L/s = pi</span>
|-
| |
| |
| | 4\15
| |
| |
| |
| |
| |
| | 3 1 3
| | 320
| | 640
| | 960
| | 80
| style="text-align:center;" | L/s = 3
|-
| |
| |
| |
| |
| |
| |
| |
| |
| | e 1 e
| | 321.6245
| | 641.249
| | 964.874
| | 86.498
| | <span style="display: block; text-align: center;">L/s = e</span>
|-
| |
| |
| |
| |
| | 11\41
| |
| |
| |
| | 8 3 8
| | 321.951
| | 643.902
| | 965.854
| | 87.805
| |
|-
| |
| |
| |
| |
| |
| |
| | 29\108
| |
| | 21 8 21
| | 322.222
| | 644.444
| | 966.667
| | 88.889
| |
|-
| |
| |
| |
| |
| |  
| | 18\67
| |
| |
| | 13 5 13
| | 322.388
| | 644.776
| | 967.364
| | 89.522
| |
|-
| |
| |
| |
| | 7\26
| |
| |
| |
| |
| | 5 2 5
| | 323.077
| | 646.154
| | 969.231
| | 92.308
| style="text-align:center;" | Orgone is around here
|-
| |
| | 3\11
| |
| |
| |
| |
| |
| |
| | 2 1 2
| | 327.273
| | 654.545
| | 981.818
| | 109.091
| style="text-align:center;" | Boundary of propriety (generators <br>larger than this are proper)
|-
| |
| |
| |
| |
| |
| |
| |
| |
| | <span style="background-color: #f5f5f5;">√3 1 √3</span>
| | 330.217
| | 660.434
| | 990.651
| | 120.868
| |
|-
| |
| |
| |
| | 8\29
| |
| |
| |
| |
| | 5 3 5
| | 331.034
| | 662.069
| | 993.013
| | 124.138
| style="text-align:center;" |
|-
| |
| |
| |
| |
| |
| | 21\76
| |
| |
| | 13 8 13
| | 331.579
| | 663.158
| | 994.739
| | 126.316
| style="text-align:center;" |
|-
| |
| |
| |
| |
| |
| |
| |
| | 34\123
| | 21 13 21
| | 331.707
| | 663.415
| | 995.122
| | 126.829
| style="text-align:center;" | Unnamed golden temperament
|-
| |
| |
| |
| |
| | 13\47
| |
| |
| |
| | 8 5 8
| | 331.915
| | 663.83
| | 995.745
| | 127.66
| style="text-align:center;" |
|-
| |
| |
| |
| |
| |
| |
| |
| |
| | pi 2 pi
| | 332.3165
| | 664.633
| | 996.9495
| | 129.266
| |
|-
| |
| |
| | 5\18
| |
| |
| |
| |
| |
| | 3 2 3
| | 333.333
| | 666.667
| | 1000
| | 133.333
| style="text-align:center;" | Optimum rank range (L/s=3/2)
|-
| |
| |
| |
| | 7\25
| |
| |
| |
| |
| | 4 3 4
| | 336
| | 672
| | 1008
| | 144
| style="text-align:center;" |
|-
| |
| |
| |
| |
| | 9\32
| |
| |
| |
| | 5 4 5
| | 337.5
| | 675
| | 1012.5
| | 150
| style="text-align:center;" | Sixix
|-
| |
| |
| |
| |
| |
| | 11\39
| |
| |
| | 6 5 6
| | 338.462
| | 676.923
| | 1015.385
| | 153.846
| style="text-align:center;" | Sixix
|-
| |
| |
| |
| |
| |
| |
| | 13\46
| |
| | 7 6 7
| | 339.13
| | 678.261
| | 1017.391
| | 156.522
| style="text-align:center;" | (17/14)^3=9/5
|-
| |
| |
| |
| |
| |
| |
| |
| | 15\53
| | 8 7 8
| | 339.623
| | 679.245
| | 1018.868
| | 158.491
| style="text-align:center;" | [[Amity]] is around here
|-
| | 2\7
| |
| |
| |
| |
| |
| |
| |
| | 1 1 1
| | 342.857
| | 685.714
| | 1028.571
| | 171.429
| style="text-align:center;" |
|}
There are two notable harmonic entropy minima: [[Kleismic_family|hanson/keemun]], in which the generator is 6/5 and 6 of them make a 3/1, and [[Starling_temperaments|myna]], in which the generator is also 6/5 but now '''10''' of them make a 6/1 (so no 4/3's or 3/2's appear in this scale).
== Rank-2 temperaments ==
=== Myna (27&31) ===
=== Hanson/Keemun (19&15, 2.3.5.7) ===
=== Orgone (15&11, 2.7.11) ===
=== Sixix ===
[[Category:Abstract MOS patterns]]
[[Category:scales]]