Octagar family: Difference between revisions
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The '''octagar family''' of temperaments are [[planar temperament]]s tempering out [[4000/3969]]. While most 7-limit planar temperaments exhibit a tendency towards tuning flat, many people seem to prefer a slight sharp tendency instead. Octagar provides this; for instance the 7 odd limit minimax tuning has fifths and 7s 2.245 cents sharp, with just major thirds. | The '''octagar family''' of temperaments are [[planar temperament]]s tempering out [[4000/3969]]. While most 7-limit planar temperaments exhibit a tendency towards tuning flat, many people seem to prefer a slight sharp tendency instead. Octagar provides this; for instance the 7-odd-limit minimax tuning has fifths and 7s 2.245 cents sharp, with just major thirds. | ||
== Octagar | == Octagar == | ||
[[Comma]] | [[Comma]]: 4000/3969 | ||
[[Mapping]]: [{{val|1 0 1 4}}, {{val|0 1 0 -2}}, {{val|0 0 2 3}}] | |||
Mapping generators: 2, ~3, ~63/40 | |||
[[Eigenmonzo]]s (unchanged intervals): 2, 7/6, 5/4 | Minimax tuning: | ||
* 7-limit minimax: | |||
: [{{monzo|1 0 0 0}}, {{monzo|5/6 1/3 1/2 -1/3}}, {{monzo|0 0 1 0}}, {{monzo|5/6 -2/3 1/2 2/3}}] | |||
: [[Eigenmonzo]]s (unchanged intervals): 2, 7/6, 5/4 | |||
9-limit minimax: 3 1/ | * 9-limit minimax: | ||
: [{{monzo|1 0 0 0}}, {{monzo|5/8 1/2 3/8 -1/4}}, {{monzo|0 0 1 0}}, {{monzo|5/4 -1 3/4 1/2}}] | |||
: [[Eigenmonzo]]s (unchanged intervals): 2, 5/4, 9/7 | |||
Lattice basis: 63/50 length = 0.8966, 21/20 length = 1.0605 | |||
Lattice basis: 63/50 length 0.8966, 21/20 length 1.0605 | |||
Angle(63/50, 21/20) = 97.743 cents | Angle(63/50, 21/20) = 97.743 cents | ||
Map to lattice: [ | Map to lattice: [{{val|0 -1 -2 -1}}, {{val|0 -1 0 2}}] | ||
{{Val list|legend=1| 12, 26, 27, 41, 53, 94, 121, 162, 189, 215, 230 }} | |||
Badness: 0.000216 | [[Badness]]: 0.000216 | ||
[[Projection pair]]s: 5 3969/800 7 27783/4000 to 2.3.7/5 | [[Projection pair]]s: 5 - 3969/800, 7 - 27783/4000 to 2.3.7/5 | ||
==== [[Hobbits|Hobbit bases]] | ==== [[Hobbits|Hobbit bases]] ==== | ||
{2, 3, 7/5} subgroup | {2, 3, 7/5} subgroup | ||
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23: 12800000/12252303, 107163/102400 | 23: 12800000/12252303, 107163/102400 | ||
=== Nakika | === Nakika === | ||
[[Comma list]]: 100/99, 245/242 | |||
Mapping: [{{val|1 0 1 4 4}}, {{val|0 1 0 -2 -2}}, {{val|0 0 2 3 4}}] | |||
Mapping generators: 2, ~3, ~11/7 | |||
Associated linear temperament: [[Tetracot family|octacot]] | Associated linear temperament: [[Tetracot family|octacot]] | ||
Lattice basis: 11/7 0.798 22/21 0.906 | Lattice basis: 11/7 length = 0.798, 22/21 length = 0.906 | ||
Angle(11/7, 22/21) = 97.747 degrees | Angle(11/7, 22/21) = 97.747 degrees | ||
Map to lattice: [ | Map to lattice: [{{val|0 1 2 1 2}}, {{val|0 -1 0 2 2}}] | ||
Vals: {{Val list| 12, 15, 26, 29, 41 }} | |||
Badness: 0.000539 | Badness: 0.000539 | ||
Projection pairs: 5 242/49 7 21296/3087 11 234256/21609 to 2.3.11/7 | Projection pairs: 5 - 242/49, 7 - 21296/3087, 11 - 234256/21609 to 2.3.11/7 | ||
Scales: [[nakika12]] | Scales: [[nakika12]] | ||
==== 13-limit ==== | |||
Comma list: 100/99, 105/104, 245/242 | |||
Mapping: [{{val|1 0 1 4 4 2}}, {{val|0 1 0 -2 -2 -1}}, {{val|0 0 2 3 4 5}}] | |||
Mapping generators: 2, ~3, ~11/7 | |||
Vals: {{Val list| 12f, 15, 26, 29, 41 }} | |||
[[Category:Theory]] | [[Category:Theory]] |