2L 5s: Difference between revisions
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2L 5s refers to a Moment of Symmetry scale with two large steps and five small steps. Common names for such a tuning are mavila and anti-diatonic. The generator is a sharp fourth (or flat fifth), falling between 3\7 (3 degrees of [[7edo|7edo]]) and 1\2 (1 degree of [[2edo|2edo]] — the half-octave tritone that appears in every even-numbered edo). | |||
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The word "mavila" is used in different ways by different folks. Not every user of the word would consider every 2L 5s scale an instance of "mavila." In particular, between 13\29 and 14\31, and centered on 9\20, is the albitonic scale for the 2.7.11.13 subgroup temperament [[Chromatic_pairs#Score|score]], which is not intended to be treated as having any kind of fifth, flat or otherwise. | |||
In terms of harmonic entropy, the most significant minimum is at [[Meantone_family|Liese]]/Triton, in which the generator is about 7/5 and three of them make a 3/1. | |||
{| class="wikitable" | |||
{| class="wikitable | |||
|- | |- | ||
! colspan="7" | generator in degrees of an [[EDO|edo]] | |||
! | generator in cents | |||
! | tetrachord | |||
! | L in cents | |||
! | s in cents | |||
! | L to s ratio | |||
! | comments | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | 3\7 | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| | | |||
| | | |||
| style="text-align:center;" | 514.3 | |||
| style="text-align:center;" | 1 1 1 | |||
| style="text-align:center;" | 171.4 | |||
| style="text-align:center;" | 171.4 | |||
| style="text-align:center;" | 1.00 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || | | | ||
| | |||
| | |||
| | |||
| | |||
| | |||
|19\44 | |||
|518.2 | |||
|6 6 7 | |||
|190.9 | |||
|163.6 | |||
|1.17 | |||
| | |||
|- | |- | ||
| || || | | | | ||
| | |||
| | |||
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|16\37 | |||
| | |||
|518.9 | |||
|5 5 6 | |||
|194.6 | |||
|162.2 | |||
|1.20 | |||
| | |||
|- | |- | ||
| || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 13\30 | |||
| | | |||
| | | |||
| style="text-align:center;" | 520.0 | |||
| style="text-align:center;" | 4 4 5 | |||
| style="text-align:center;" | 200.0 | |||
| style="text-align:center;" | 160.0 | |||
| style="text-align:center;" | 1.25 | |||
| style="text-align:center;" | Mavila extends from here... | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 10\23 | |||
| style="text-align:center;" | | |||
| | | |||
| | | |||
| style="text-align:center;" | 521.7 | |||
| style="text-align:center;" | 3 3 4 | |||
| style="text-align:center;" | 208.7 | |||
| style="text-align:center;" | 156.5 | |||
| style="text-align:center;" | 1.33 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || || 17\39 || || 523. | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 17\39 | |||
| | | |||
| | | |||
| style="text-align:center;" | 523.1 | |||
| style="text-align:center;" | 5 5 7 | |||
| style="text-align:center;" | 215.4 | |||
| style="text-align:center;" | 153.8 | |||
| style="text-align:center;" | 1.40 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | 7\16 | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| | | |||
| | | |||
| style="text-align:center;" | 525.0 | |||
| style="text-align:center;" | 2 2 3 | |||
| style="text-align:center;" | 225.0 | |||
| style="text-align:center;" | 150.0 | |||
| style="text-align:center;" | 1.50 | |||
| style="text-align:center;" | Mavila in Armodue | |||
Optimum rank range (L/s=3/2) | |||
|- | |- | ||
| || || | | | | ||
| | | |||
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| style="text-align:center;" | 526.3 | |||
| style="text-align:center;" | <span style="display: block; text-align: center;">2 2 pi</span> | |||
| style="text-align:center;" | 231.5 | |||
| style="text-align:center;" | 147.4 | |||
| style="text-align:center;" | <span style="display: block; text-align: center;">pi/2</span> | |||
| | | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 18\41 | |||
| | | |||
| | | |||
| style="text-align:center;" | 526.8 | |||
| style="text-align:center;" | 5 5 8 | |||
| style="text-align:center;" | 234.1 | |||
| style="text-align:center;" | 146.3 | |||
| style="text-align:center;" | 1.60 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || || | | | | ||
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| style="text-align:center;" | 1200*5/(13-phi) | |||
| style="text-align:center;" | 1 1 phi | |||
| style="text-align:center;" | 235.7 | |||
| style="text-align:center;" | 145.7 | |||
| style="text-align:center;" | phi | |||
| style="text-align:center;" | Golden mavila | |||
|- | |- | ||
| || || || || || 29\66 || 527. | | | | ||
| | | |||
| | | |||
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| | 29\66 | |||
| | | |||
| style="text-align:center;" | 527.3 | |||
| style="text-align:center;" | 8 8 13 | |||
| style="text-align:center;" | 236.4 | |||
| style="text-align:center;" | 145.5 | |||
| style="text-align:center;" | 1.625 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || 11\25 || || || 528. | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 11\25 | |||
| style="text-align:center;" | | |||
| | | |||
| | | |||
| style="text-align:center;" | 528.0 | |||
| style="text-align:center;" | 3 3 5 | |||
| style="text-align:center;" | 240.0 | |||
| style="text-align:center;" | 144.0 | |||
| style="text-align:center;" | 1.67 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || || || | | | | ||
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| style="text-align:center;" | 529.1 | |||
| style="text-align:center;" | <span style="background-color: #ffffff;"><span style="line-height: 1.5;">1 1 </span>√3 </span> | |||
| style="text-align:center;" | 245.6 | |||
| style="text-align:center;" | 141.8 | |||
| style="text-align:center;" | <span style="background-color: #ffffff; display: block; text-align: center;">√3</span> | |||
| | | |||
|- | |- | ||
| || || || || 15\34 || || 529. | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 15\34 | |||
| | | |||
| | | |||
| style="text-align:center;" | 529.4 | |||
| style="text-align:center;" | 4 4 7 | |||
| style="text-align:center;" | 247.1 | |||
| style="text-align:center;" | 141.2 | |||
| style="text-align:center;" | 1.75 | |||
| style="text-align:center;" | ...to somewhere around here | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | 4\9 | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| | | |||
| | | |||
| style="text-align:center;" | 533.3 | |||
| style="text-align:center;" | 1 1 2 | |||
| style="text-align:center;" | 266.7 | |||
| style="text-align:center;" | 133.3 | |||
| style="text-align:center;" | 2.00 | |||
| style="text-align:center;" | Boundary of propriety (generators | |||
smaller than this are proper) | |||
|- | |- | ||
| || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 13\29 | |||
| | | |||
| | | |||
| style="text-align:center;" | 537.9 | |||
| style="text-align:center;" | 3 3 7 | |||
| style="text-align:center;" | 289.7 | |||
| style="text-align:center;" | 124.1 | |||
| style="text-align:center;" | 2.33 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 9\20 | |||
| style="text-align:center;" | | |||
| | | |||
| | | |||
| style="text-align:center;" | 540.0 | |||
| style="text-align:center;" | 2 2 5 | |||
| style="text-align:center;" | 300.0 | |||
| style="text-align:center;" | 120.0 | |||
| style="text-align:center;" | 2.50 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || || | | | | ||
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| style="text-align:center;" | 541.4 | |||
| style="text-align:center;" | <span style="display: block; text-align: center;">1 1 phi+1</span> | |||
| style="text-align:center;" | 306.9 | |||
| style="text-align:center;" | 117.2 | |||
| style="text-align:center;" | <span style="display: block; text-align: center;">1 1 phi+1</span> | |||
| | | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 14\31 | |||
| | | |||
| | | |||
| style="text-align:center;" | 541.9 | |||
| style="text-align:center;" | 3 3 8 | |||
| style="text-align:center;" | 309.7 | |||
| style="text-align:center;" | 116.1 | |||
| style="text-align:center;" | 2.66 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || | | | | ||
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| style="text-align:center;" | 542<span style="line-height: 1.5;">.5</span> | |||
| style="text-align:center;" | 1 1 e | |||
| style="text-align:center;" | 321.55 | |||
| style="text-align:center;" | 115.0 | |||
| style="text-align:center;" | e | |||
| style="text-align:center;" | L/s = e | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | 5\11 | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| | | |||
| | | |||
| style="text-align:center;" | 545.5 | |||
| style="text-align:center;" | 1 1 3 | |||
| style="text-align:center;" | 327.3 | |||
| style="text-align:center;" | 109.1 | |||
| style="text-align:center;" | 3.00 | |||
| style="text-align:center;" | L/s = 3 | |||
|- | |- | ||
| || || || || | | | | ||
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| style="text-align:center;" | 546.8 | |||
| style="text-align:center;" | 1 1 pi | |||
| style="text-align:center;" | 334.1 | |||
| style="text-align:center;" | 106.35 | |||
| style="text-align:center;" | pi | |||
| style="text-align:center;" | <span style="display: block; text-align: center;">L/s = pi</span> | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 11\24 | |||
| | | |||
| | | |||
| style="text-align:center;" | 550.0 | |||
| style="text-align:center;" | 2 2 7 | |||
| style="text-align:center;" | 350.0 | |||
| style="text-align:center;" | 100.0 | |||
| style="text-align:center;" | 3.50 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
|- | | style="text-align:center;" | 6\13 | ||
| style="text-align:center;" | | |||
|- | | | | ||
| | | |||
| style="text-align:center;" | 553.8 | |||
| style="text-align:center;" | 1 1 4 | |||
| style="text-align:center;" | 369.2 | |||
| style="text-align:center;" | 92.3 | |||
| style="text-align:center;" | 4.00 | |||
| style="text-align:center;" | Thuja is optimal around here | |||
L/s = 4 | |||
|- | |- | ||
| || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 7\15 | |||
| | | |||
| | | |||
| style="text-align:center;" | 560.0 | |||
| style="text-align:center;" | 1 1 5 | |||
| style="text-align:center;" | 400.0 | |||
| style="text-align:center;" | 80.0 | |||
| style="text-align:center;" | 5.00 | |||
| style="text-align:center;" | ie. (11/8)^5 = 5/1 | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 8\17 | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 564.7 | |||
| style="text-align:center;" | 1 1 6 | |||
| style="text-align:center;" | 423.5 | |||
| style="text-align:center;" | 70.6 | |||
| style="text-align:center;" | 6.00 | |||
| style="text-align:center;" | | |||
|- | |- | ||
| || || || || | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| style="text-align:center;" | 9\19 | |||
| style="text-align:center;" | 568.4 | |||
| style="text-align:center;" | 1 1 7 | |||
| style="text-align:center;" | 442.1 | |||
| style="text-align:center;" | 63.2 | |||
| style="text-align:center;" | 7.00 | |||
| style="text-align:center;" | Liese/Triton is around here | |||
|- | |- | ||
| || || || || || | | style="text-align:center;" | 1\2 | ||
|- | | style="text-align:center;" | | ||
| 1 | | style="text-align:center;" | | ||
| style="text-align:center;" | | |||
| style="text-align:center;" | | |||
| | | |||
| | | |||
| style="text-align:center;" | 600.0 | |||
| style="text-align:center;" | 0 0 1 | |||
| style="text-align:center;" | 600.0 | |||
| style="text-align:center;" | 0 | |||
| style="text-align:center;" | — | |||
| style="text-align:center;" | | |||
|} | |} | ||