4L 3s: Difference between revisions

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There are two notable harmonic entropy minima: [[Kleismic_family|kleismic]], 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).
== Tuning ranges ==
== Tuning ranges ==
=== Sixix ===
=== Parasoft ===
Sixix tunings (with generator a supraminor third sharper than 5\18 and flatter than 9\32) have step ratios between 5/4 and 3/2.
[[Parasoft]] smitonic tunings have step ratios between 5/4 and 3/2, which implies a generator sharper than 5\18 = 333.33¢ and flatter than 9\32 = 337.5¢.


Sixix can be considered "meantone smitonic". This is because sixix tunings share the following features with [[meantone]] diatonic tunings:  
Parasoft smitonic can be considered "meantone smitonic". This is because these tunings share the following features with [[meantone]] diatonic tunings:  
* The large step is a "meantone", somewhere between near-10/9 (as in [[32edo]]) and near-9/8 (as in [[18edo]]). Thus sixix tempers out [[81/80]] like meantone does.
* The large step is a "meantone", somewhere between near-10/9 (as in [[32edo]]) and near-9/8 (as in [[18edo]]).
* The major mosthird (made of two large steps) is a roughly [[meantone]]-sized major third, thus is a stand-in for the classical diatonic major third.
* The major mosthird (made of two large steps) is a roughly [[meantone]]-sized major third, thus is a stand-in for the classical diatonic major third.


EDOs that support sixix include [[18edo]], [[25edo]], [[32edo]], and [[43edo]].
Parasoft smitonic EDOs include [[18edo]], [[25edo]], [[32edo]], and [[43edo]].
* 18edo can be used to make large and small steps more distinct (the step ratio is 3/2, thus 18edo smitonic is distorted [[19edo]] diatonic), or for its nearly pure 9/8. It also makes rising fifths (733.3c, a perfect mossixth) and falling fifths (666.7c, a major mosfifth) almost equally off from a just perfect fifth. 18edo is also more suited for conventionally jazz styles due to its 6-fold symmetry.
* 18edo can be used to make large and small steps more distinct (the step ratio is 3/2, thus 18edo smitonic is distorted [[19edo]] diatonic), or for its nearly pure 9/8. It also makes rising fifths (733.3c, a perfect mossixth) and falling fifths (666.7c, a major mosfifth) almost equally off from a just perfect fifth. 18edo is also more suited for conventionally jazz styles due to its 6-fold symmetry.
* [[25edo]] can be used to make the major mosthird a good [[5/4]] (384¢).
* [[25edo]] can be used to make the major mosthird a good [[5/4]] (384¢).


The sizes of the generator, large step and small step of smitonic are as follows in various sixix tunings.  
The sizes of the generator, large step and small step of smitonic are as follows in various parasoft smitonic tunings.  
{| class="wikitable right-2 right-3 right-4 right-5"
{| class="wikitable right-2 right-3 right-4 right-5"
|-
|-
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|}
|}
=== Hyposoft smitonic ===
=== Hyposoft smitonic ===
These tunings (with generator a supraminor third sharper than 3\11 and flatter than 5\18) have [[step ratio]]s between 3/2 and 2/1.
[[Hyposoft]] tunings of smitonic  have [[step ratio]]s between 3/2 and 2/1 which implies that the generator is a supraminor third sharper than 3\11 = 327.27¢ and flatter than 5\18 = 333.33¢.


The large step is a sharper major second in these tunings than in sixix tunings. These tunings could be considered "[[parapyth]] smitonic" or "[[archy]] smitonic", in analogy to sixix being meantone smitonic.
The large step is a sharper major second in these tunings than in parasoft tunings. These tunings could be considered "[[parapyth]] smitonic" or "[[archy]] smitonic", in analogy to parasoft smitonic being meantone smitonic.


{| class="wikitable right-2 right-3 right-4 right-5"
{| class="wikitable right-2 right-3 right-4 right-5"
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| 3\29, 124.14
| 3\29, 124.14
|}
|}
=== Orgone ===
=== Hypohard ===
[[Orgone]] tunings (with generator a minor third sharper than 4\15 and flatter than 3\11) have step ratios between 2/1 and 3/1. It nominally approximates the 2.7.11 subgroup, on which the [[26edo]] tuning is very accurate and pretty much optimal. The large step approximates [[8/7]], and the major smifourth (2 large steps + 1 small step) approximates [[11/8]].
[[Hypohard]] tunings have [[step ratio]]s between 2 and 3, implying a generator sharper than 4\15 = 320¢ and flatter than 3\11 = 327.27¢. The large step tends to approximate [[8/7]], and the major smifourth (2 large steps + 1 small step) tends to approximate [[11/8]]; [[26edo]] is stellar in both of these approximations.


EDOs that support orgone include [[11edo]], [[15edo]], [[26edo]], and [[37edo]].
Hypohard smitonic edos include [[11edo]], [[15edo]], [[26edo]], and [[37edo]].
The sizes of the generator, large step and small step of smitonic are as follows in various orgone tunings.  
The sizes of the generator, large step and small step of smitonic are as follows in various hypohard smitonic tunings.  
{| class="wikitable right-2 right-3 right-4 right-5"
{| class="wikitable right-2 right-3 right-4 right-5"
|-
|-
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|}
|}


=== Kleismic ===
=== Parahard ===
[[Kleismic]] (aka hanson or keemun) tunings (with generator a minor third sharper than 5\19 and flatter than 4\15) have step ratios between 3/1 and 4/1. Kleismic is a [[5-limit]] microtemperament that tempers out the [[kleisma]] 15625/15552. The generator is close to a pure [[6/5]] minor third, and 6 minor thirds are used to reach [[3/2]]. The 7-note MOS only has one perfect fifth, so bigger MOSes, such as the [[4L 7s]] 11-note MOS, are suggested for getting 5-limit harmony.
In parahard smitonic (step ratio between 3 and 4, thus with generator between 5\19, 315.79¢ and 4\15, 320¢), the generator is close to a pure [[6/5]] minor third, and 6 minor thirds are used to reach a perfect fifth. The 7-note MOS only has one perfect fifth, so extending the chain to bigger MOSes, such as the [[4L 7s]] 11-note MOS, is suggested for getting 5-limit harmony.


EDOs that support kleismic include [[15edo]], [[19edo]], [[34edo]], [[53edo]], [[72edo]], and [[87edo]].
EDOs that have parahard smitonic include [[15edo]], [[19edo]], [[34edo]], and [[53edo]].


The sizes of the generator, large step and small step of smitonic are as follows in various kleismic tunings.  
The sizes of the generator, large step and small step of smitonic are as follows in various parahard smitonic tunings.  
{| class="wikitable right-2 right-3 right-4 right-5"
{| class="wikitable right-2 right-3 right-4 right-5"
|-
|-
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! [[19edo]]
! [[19edo]]
! [[34edo]]
! [[34edo]]
! 2.3.5 [[POTE]] tuning
! [[53edo]]
! JI intervals represented
! JI intervals represented
|-
|-
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| 5\19, 315.79
| 5\19, 315.79
| 9\34, 317.65
| 9\34, 317.65
| 317.01
| 316.98
| 6/5
| 6/5
|-
|-
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| 4\19, 252.63
| 4\19, 252.63
| 7\34, 247.06
| 7\34, 247.06
| 248.98
| 249.06
| 15/13, 23/20
| 15/13, 23/20
|-
|-
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| 1\19, 63.16  
| 1\19, 63.16  
| 2\34, 70.59
| 2\34, 70.59
| 68.03
| 67.92
| 25/24
| 25/24
|}
|}
-->
 
== Intervals ==
== Intervals ==
{| class="wikitable center-all"
{| class="wikitable center-all"