Hemifamity family: Difference between revisions
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{{Technical data page}} | |||
The '''hemifamity family''' of [[rank-3 temperament|rank-3]] [[regular temperament|temperaments]] [[tempering out|tempers out]] [[5120/5103]] ({{monzo|legend=1| 10 -6 1 -1 }}), the hemifamity comma. These temperaments divide an exact or approximate septimal quartertone, [[36/35]] into two equal steps, each representing [[81/80]]~[[64/63]], the syntonic comma or the septimal comma. Therefore, classical and septimal intervals are found by the same [[chain of fifths]] inflected by the same comma to the opposite sides. In addition we may identify [[10/7]] by the augmented fourth (C–F#) and [[50/49]] by the [[Pythagorean comma]]. Hemifamity can be compared to [[garibaldi]], with garibaldi expanding the interpretations of 81/80~64/63 to include the Pythagorean comma (collapsing to a rank-2 structure), or alternatively, hemifamity can be seen as liberating the syntonic-septimal comma from garibaldi's chain of fifths. | |||
It is therefore very handy to adopt an additional module of accidentals such as arrows to represent the syntonic~septimal comma, in which case we have [[5/4]] at the down major third (C–vE) and [[7/4]] at the down minor seventh (C–vBb). | |||
[ | |||
== Hemifamity == | |||
[ | [[Subgroup]]: 2.3.5.7 | ||
[[Comma list]]: [[5120/5103]] | |||
[[ | |||
= | {{Mapping|legend=1| 1 0 0 10 | 0 1 0 -6 | 0 0 1 1 }} | ||
: mapping generators: ~2, ~3, ~5 | |||
[[Mapping to lattice]]: [{{val| 0 1 2 -4 }}, {{val| 0 0 1 1 }}] | |||
[| | |||
| | |||
Lattice basis: | |||
: 3/2 length = 0.5670, 10/9 length = 1.8063 | |||
: Angle (3/2, 10/9) = 82.112 degrees | |||
== | [[Optimal tuning]] ([[CTE]]): ~2 = 1200.0000, ~3/2 = 702.7918, ~5/4 = 386.0144 | ||
Minimax tuning | [[Minimax tuning]]: c = 5120/5103 | ||
[|1 0 0 0 | * [[7-odd-limit]]: 3 and 7 1/7c sharp, 5 just | ||
|0 0 1 0 | : {{monzo list| 1 0 0 0 | 10/7 1/7 1/7 -1/7 | 0 0 1 0 | 10/7 -6/7 1/7 6/7 }} | ||
| | : [[Eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.5.7/3 | ||
* [[9-odd-limit]]: 3 1/8c sharp, 5 just, 7 1/4c sharp | |||
: {{monzo list| 1 0 0 0 | 5/4 1/4 1/8 -1/8 | 0 0 1 0 | 5/2 -3/2 1/4 3/4 }} | |||
: [[Eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.5.9/7 | |||
{{Optimal ET sequence|legend=1| 41, 53, 87, 94, 99, 239, 251, 292, 391, 881bd, 1272bcdd }} | |||
[[Badness]] (Smith): 0.153 × 10<sup>-3</sup> | |||
[[Projection pair]]s: 7 5120/729 | |||
; Music | |||
* [http://www.archive.org/details/Choraled ''Choraled''] [http://www.archive.org/download/Choraled/Genewardsmith-Choraled.mp3 play] by [[Gene Ward Smith]] | |||
* [http://clones.soonlabel.com/public/micro/hemifamity27/hemifamity27-IF-20100917.mp3 ''Hemifamity27''] by [[Chris Vaisvil]] | |||
[| | |||
=== Overview to extensions === | |||
==== 11- and 13-limit extensions ==== | |||
Strong extensions of hemifamity are [[#Pele|pele]], [[#Laka|laka]], [[#Akea|akea]], and [[#Lono|lono]]. The rest are weak extensions. Using the arrow to represent the syntonic~septimal comma, pele finds the [[11/8]] at the down diminished fifth (C–vGb); laka, up augmented third (C–^E#); akea, double-up fourth (C–^^F); lono, triple-down augmented fourth (C–v<sup>3</sup>F#). All these extensions follow the trend of tuning the fifth a little sharp. Thus a successful mapping of 13 can be found by fixing the [[13/11]] at the minor third (C–Eb), tempering out [[352/351]], [[847/845]], and [[2080/2079]]. | |||
==== Subgroup extensions ==== | |||
|0 | A notable 2.3.5.7.19 subgroup extension, counterpyth, is given right below. | ||
=== Counterpyth === | |||
{{Main| Counterpyth }} | |||
Developed analogous to [[parapyth]], counterpyth is an extension of hemifamity with an even milder fifth, as it finds [[19/15]] at the major third (C–E) and [[19/10]] at the major seventh (C–B). Notice the factorization {{nowrap| 5120/5103 {{=}} ([[400/399]])⋅([[1216/1215]]) }}. Other important ratios are [[21/19]] at the diminished third (C–Ebb) and [[19/14]] at the augmented third (C–E#). | |||
It can be further extended via the mappings of laka or akea, while working less well with pele or lono due to their much sharper fifths. | |||
Subgroup: 2.3.5.7.19 | |||
Comma list: 400/399, 1216/1215 | |||
Mapping: {{mapping| 1 0 0 10 -6 | 0 1 0 -6 5 | 0 0 1 1 1 }} | |||
Optimal tuning (CTE): ~2 = 1200.0000, ~3/2 = 702.6411, ~5/4 = 385.4452 | |||
| | |||
{{Optimal ET sequence|legend=0| 12, 29, 41, 53, 94, 99, 140, 152, 292h, 444dh }} | |||
Badness (Smith): 0.212 × 10<sup>-3</sup> | |||
== Pele == | |||
{{Main| Pele }} | |||
{{See also| Pentacircle clan }} | |||
[[Subgroup]]: 2.3.5.7.11 | |||
[[Comma list]]: 441/440, 896/891 | |||
|0 0 | |||
|2 0 3/7 | {{Mapping|legend=1| 1 0 0 10 17 | 0 1 0 -6 -10 | 0 0 1 1 1 }} | ||
[[Mapping to lattice]]: [{{val| 0 1 4 -2 -6 }}, {{val| 0 0 -1 -1 -1 }}] | |||
Lattice basis: | |||
: 3/2 length = 0.3812, 56/55 length = 1.5893 | |||
: Angle(3/2, 56/55) = 90.4578 degrees | |||
[[Optimal tuning]] ([[CTE]]): ~2 = 1200.0000, ~3/2 = 703.2829, ~5/4 = 386.5647 | |||
[[Minimax tuning]]: | |||
* [[11-odd-limit]] | |||
: [{{monzo| 1 0 0 0 0 }}, {{monzo| 17/10 0 1/10 0 -1/10 }}, {{monzo| 17/5 -2 6/5 0 -1/5 }}, {{monzo| 16/5 -2 3/5 0 2/5 }}, {{monzo| 17/5 -2 1/5 0 4/5 }}] | |||
: [[Eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.9/5.11/9 | |||
{{Optimal ET sequence|legend=1| 29, 41, 58, 87, 99e, 145, 186e }} | |||
[[Badness]] (Smith): 0.648 × 10<sup>-3</sup> | |||
[[Projection pair]]s: 7 5120/729 11 655360/59049 | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 196/195, 352/351, 364/363 | |||
Mapping: {{mapping| 1 0 0 10 17 22 | 0 1 0 -6 -10 -13 | 0 0 1 1 1 1 }} | |||
Optimal tuning (CTE): ~2 = 1200.0000, ~3/2 = 703.4398, ~5/4 = 386.8933 | |||
Minimax tuning: | |||
* 13-odd-limit unchanged-interval (eigenmonzo) basis: 2.9/5.13/9 | |||
* 15-odd-limit unchanged-interval (eigenmonzo) basis: 2.5/3.13/9 | |||
{{Optimal ET sequence|legend=0| 29, 41, 46, 58, 87, 145, 232 }} | |||
Badness (Smith): 0.703 × 10<sup>-3</sup> | |||
=== 17-limit === | |||
Subgroup: 2.3.5.7.11.13.17 | |||
Comma list: 196/195, 256/255, 352/351, 364/363 | |||
Mapping: {{mapping| 1 0 0 10 17 22 8 | 0 1 0 -6 -10 -13 -1 | 0 0 1 1 1 1 -1 }} | |||
Optimal tuning (CTE): ~2 = 1200.0000, ~3/2 = 703.5544, ~5/4 = 387.9654 | |||
{{Optimal ET sequence|legend=0| 29, 41, 46, 58, 87, 99ef, 145 }} | |||
Badness (Smith): 0.930 × 10<sup>-3</sup> | |||
== Laka == | |||
{{Main| Laka }} | |||
Laka can be described as the {{nowrap| 41 & 53 & 58 }} temperament, tempering out [[540/539]]. [[Gene Ward Smith]] considered it to be a [[17-limit]] temperament, assigning †442/441 ({{nowrap| 41g & 53 & 58 }}) as the main extension. It should be noted that {{nowrap| 41 & 53g & 58 }} also makes for a possible extension. | |||
<blockquote> | |||
It's the way the numbers fall. The Laka geometry happens to work reasonably well in the 13-limit but not so well in the 17-limit. There isn't one obvious 17-limit extension and none of them are competitive with other 17-limit temperaments. | |||
</blockquote> | |||
—[[Graham Breed]]<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_101682.html#101776 Yahoo! Tuning Group | ''Laka 17-limit minimax planar temperament'']</ref> | |||
It makes most sense as a 2.3.5.7.11.13.19-[[subgroup]] temperament, omitting harmonic 17, as the 19 is accurate and easily available in a 24-tone scale. | |||
[[Subgroup]]: 2.3.5.7.11 | |||
[[Comma list]]: 540/539, 5120/5103 | |||
{{Mapping|legend=1| 1 0 0 10 -18 | 0 1 0 -6 15 | 0 0 1 1 -1 }} | |||
[[Optimal tuning]] ([[CTE]]): ~2 = 1200.0000, ~3/2 = 702.5133, ~5/4 = 385.5563 | |||
[[Minimax tuning]] | |||
* [[11-odd-limit]] | |||
: [{{monzo| 1 0 0 0 0 }}, {{monzo| 4/3 0 2/21 -1/21 1/21 }}, {{monzo| 0 0 1 0 0 }}, {{monzo| 2 0 3/7 2/7 -2/7 }}, {{monzo| 2 0 3/7 -5/7 5/7 }}] | |||
: [[Eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.5.11/7 | |||
{{Optimal ET sequence|legend=1| 41, 53, 58, 94, 99e, 152, 497de, 555dee, 707ddee, 859bddee }} | |||
[[Badness]] (Smith): 0.825 × 10<sup>-3</sup> | |||
[[Projection pair]]s: 5120/729 11 14348907/1310720 | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 352/351, 540/539, 729/728 | |||
Mapping: {{mapping| 1 0 0 10 -18 -13 | 0 1 0 -6 15 12 | 0 0 1 1 -1 -1 }} | |||
Optimal tuning (CTE): ~2 = 1200.0000, ~3/2 = 702.4078, ~5/4 = 385.5405 | |||
Minimax tuning: | |||
* 13- and 15-odd-limit | |||
: [{{monzo| 1 0 0 0 0 0 }}, {{monzo| 13/8 -1/2 1/8 0 0 1/8 }}, {{monzo| 13/4 -3 5/4 0 0 1/4 }}, {{monzo| 7/2 0 1/2 0 0 -1/2 }}, {{monzo| 25/8 -9/2 5/8 0 0 13/8 }}, {{monzo| 13/4 -3 1/4 0 0 5/4 }}] | |||
: unchanged-interval (eigenmonzo) basis: 2.11.13/7 | |||
{{Optimal ET sequence|legend=0| 41, 53, 58, 94, 111, 152f, 415dff }}* | |||
<nowiki>*</nowiki> optimal patent val: [[205edo|205]] | |||
Badness (Smith): 0.822 × 10<sup>-3</sup> | |||
=== 2.3.5.7.11.13.19 subgroup === | |||
Subgroup: 2.3.5.7.11.13.19 | |||
Comma list: 352/351, 400/399, 456/455, 495/494 | |||
Mapping: {{mapping| 1 0 0 10 -18 -13 -6 | 0 1 0 -6 15 12 5 | 0 0 1 1 -1 -1 1 }} | |||
Optimal tuning (CTE): ~2 = 1200.0000, ~3/2 = 702.4062, ~5/4 = 385.5254 | |||
{{Optimal ET sequence|legend=0| 41, 53, 58h, 94, 111, 152f, 415dffhh }}* | |||
<nowiki>*</nowiki> optimal patent val: [[205edo|205]] | |||
Badness (Smith): 0.661 × 10<sup>-3</sup> | |||
=== 17-limit === | |||
Subgroup: 2.3.5.7.11.13.17 | |||
Comma list: 352/351, 442/441, 540/539, 561/560 | |||
Mapping: {{mapping| 1 0 0 10 -18 -13 32 | 0 1 0 -6 15 12 -22 | 0 0 1 1 -1 -1 3 }} | |||
Minimax tuning: | |||
* 17-odd-limit | |||
: [{{monzo| 1 0 0 0 0 0 0 }}, {{monzo| 13/12 0 0 1/12 1/6 -1/12 0 }}, {{monzo| -7/4 0 0 5/4 3/2 -5/4 0 }}, {{monzo| 7/4 0 0 3/4 1/2 -3/4 0 }}, {{monzo| 0 0 0 0 1 0 0 }}, {{monzo| 7/4 0 0 -1/4 1/2 1/4 0 }}, {{monzo| 35/12 0 0 23/12 5/6 -23/12 0 }}] | |||
: unchanged-interval (eigenmonzo) basis: 2.11.13/7 | |||
{{Optimal ET sequence|legend=0| 58, 94, 111, 152f, 205, 263df }} | |||
Badness (Smith): 1.19 × 10<sup>-3</sup> | |||
== Akea == | |||
[[File:Lattice Akea.png|thumb|Lattice for 13-limit akea.]] | |||
[[File:Lattice Akea-commatic.png|thumb|Ditto, but rearranged to basis {~2, ~3, ~81/80}.]] | |||
[[Subgroup]]: 2.3.5.7.11 | |||
[[Comma list]]: 385/384, 2200/2187 | |||
{{Mapping|legend=1| 1 0 0 10 -3 | 0 1 0 -6 7 | 0 0 1 1 -2 }} | |||
[[Optimal tuning]] ([[CTE]]): ~2 = 1200.0000, ~3/2 = 702.8909, ~5/4 = 385.3273 | |||
[[Minimax tuning]]: | |||
* [[11-odd-limit]] | |||
: [{{monzo| 1 0 0 0 0 }}, {{monzo| 5/3 0 1/6 -1/6 0 }}, {{monzo| 26/9 0 13/18 -7/18 -1/3 }}, {{monzo| 26/9 0 -5/18 11/18 -1/3 }}, {{monzo| 26/9 0 -5/18 -7/18 2/3 }}] | |||
: [[Eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.7/5.11/5 | |||
{{Optimal ET sequence|legend=1| 34, 41, 53, 87, 140, 181, 321 }} | |||
[[Badness]] (Smith): 0.998 × 10<sup>-3</sup> | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 325/324, 352/351, 385/384 | |||
Mapping: {{mapping| 1 0 0 10 -3 2 | 0 1 0 -6 7 4 | 0 0 1 1 -2 -2 }} | |||
Lattice basis: | |||
: 3/2 length = 0.5354, 27/20 length = 1.0463 | |||
: Angle (3/2, 27/20) = 80.5628 degrees | |||
Mapping to lattice: [{{val| 0 1 3 -3 1 -2 }}, {{val| 0 0 -1 -1 2 2 }}] | |||
Optimal tuning (CTE): ~2 = 1200.0000, ~3/2 = 702.9018, ~5/4 = 385.4158 | |||
Minimax tuning: | |||
* 13- and 15-odd-limit | |||
: [{{monzo| 1 0 0 0 0 0 }}, {{monzo| 5/3 0 1/6 -1/6 0 0 }}, {{monzo| 26/9 0 13/18 -7/18 -1/3 0 }}, {{monzo| 26/9 0 -5/18 11/18 -1/3 0 }}, {{monzo| 26/9 0 -5/18 -7/18 2/3 0 }}, {{monzo| 26/9 0 -7/9 1/9 2/3 0 }}] | |||
: unchanged-interval (eigenmonzo) basis: 2.7/5.11/5 | |||
{{Optimal ET sequence|legend=0| 34, 41, 46, 53, 87, 140, 321, 461e }} | |||
Badness (Smith): 0.822 × 10<sup>-3</sup> | |||
Scales: [[akea46_13]] | |||
== Lono == | |||
[[Subgroup]]: 2.3.5.7.11 | |||
[[Comma list]]: 176/175, 5120/5103 | |||
{{Mapping|legend=1| 1 0 0 10 6 | 0 1 0 -6 -6 | 0 0 1 1 3 }} | |||
[[Optimal tuning]] ([[CTE]]): ~2 = 1200.0000, ~3/2 = 702.8941, ~5/4 = 388.5932 | |||
{{Optimal ET sequence|legend=1| 46, 53, 58, 99, 111, 268cd }} | |||
[[Badness]] (Smith): 1.18 × 10<sup>-3</sup> | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 176/175, 351/350, 847/845 | |||
Mapping: {{mapping| 1 0 0 10 6 11 | 0 1 0 -6 -6 -9 | 0 0 1 1 3 3 }} | |||
Optimal tuning (CTE): ~2 = 1200.0000, ~3/2 = 702.8670, ~5/4 = 388.6277 | |||
{{Optimal ET sequence|legend=0| 46, 53, 58, 99, 104c, 111, 268cd }} | |||
Badness (Smith): 0.908 × 10<sup>-3</sup> | |||
== Kapo == | |||
[[Subgroup]]: 2.3.5.7.11 | |||
[[Comma list]]: 3025/3024, 5120/5103 | |||
{{Mapping|legend=1| 1 0 0 10 7 | 0 1 1 -5 -2 | 0 0 2 2 -1 }} | |||
: mapping generators: ~2, ~3, ~128/99 | |||
[[Optimal tuning]] ([[CTE]]): ~2 = 1200.0000, ~3/2 = 702.8776, ~128/99 = 441.7516 | |||
[[Minimax tuning]]: | |||
* [[11-odd-limit]]: | |||
: [{{monzo| 1 0 0 0 0 }}, {{monzo| 8/5 2/5 0 -1/15 -2/15 }}, {{monzo| 14/5 6/5 0 7/15 -16/15 }}, {{monzo| 16/5 -6/5 0 13/15 -4/15 }}, {{monzo| 16/5 -6/5 0 -2/15 11/15 }}] | |||
: [[Eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.9/7.11/9 | |||
{{Optimal ET sequence|legend=1| 41, 87, 111, 152, 239, 391 }} | |||
[[Badness]] (Smith): 0.994 × 10<sup>-3</sup> | |||
== Namaka == | |||
[[Subgroup]]: 2.3.5.7.11 | |||
[[Comma list]]: 3388/3375, 5120/5103 | |||
{{Mapping|legend=1| 1 0 0 10 -6 | 0 2 0 -12 9 | 0 0 1 1 1 }} | |||
: mapping generators: ~2, ~400/231, ~5 | |||
[[Optimal tuning]] ([[CTE]]): ~2 = 1200.0000, ~400/231 = 951.4956, ~5/4 = 386.7868 | |||
{{Optimal ET sequence|legend=1| 29, 53, 58, 87, 111, 140, 198 }} | |||
[[Badness]] (Smith): 1.74 × 10<sup>-3</sup> | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 352/351, 676/675, 847/845 | |||
Mapping: {{mapping| 1 0 0 10 -6 -1 | 0 2 0 -12 9 3 | 0 0 1 1 1 1 }} | |||
Optimal tuning (CTE): ~2 = 1200.0000, ~26/15 = 951.4871, ~5/4 = 386.6606 | |||
{{Optimal ET sequence|legend=0| 29, 53, 58, 87, 111, 140, 198 }} | |||
Badness (Smith): 0.781 × 10<sup>-3</sup> | |||
== Notes == | |||
[[Category:Temperament families]] | |||
[[Category:Pages with mostly numerical content]] | |||
[[Category:Hemifamity family| ]] <!-- main article --> | |||
[[Category:Hemifamity| ]] <!-- key article --> | |||
[[Category:Rank 3]] | |||
[[Category:Listen]] |