Amity: Difference between revisions
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Various improvments, mainly interval table |
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'''Amity''' is a temperament for the 5, 7, 11, and 13 [[Harmonic limit|prime limits]]. | '''Amity''' is a temperament for the 5, 7, 11, and 13 [[Harmonic limit|prime limits]]. Equal temperaments that support amity include [[46edo|46]], [[53edo|53]], [[99edo|99]], [[152edo|152]], and [[205edo|205]]. | ||
In the 7-limit, amity tempers out 4375/4374 and 5120/5103, as well as 5-limit [[amity comma]], 1600000/1594323. But extending it from the 7-limit to the 11-limit is not so simple. There are two mappings that are comparable in complexity and error: 11-limit amity (53&205) and hitchcock (46&53). | In the 7-limit, amity tempers out 4375/4374 and 5120/5103, as well as 5-limit [[amity comma]], 1600000/1594323. But extending it from the 7-limit to the 11-limit is not so simple. There are two mappings that are comparable in complexity and error: 11-limit amity (53&205) and hitchcock (46&53). | ||
Tempering out 540/539 leads 11-limit amity, supported by | Tempering out 540/539 leads 11-limit amity, supported by 53et, 152et, and 205et. Tempering out 121/120 leads 11-limit hitchcock, supported by 46et, 53et, and 99et. They can be extended to the 13-limit by the 352/351 comma, and results in 625/624 and 729/728 being tempered out in 13-limit amity; 169/168 and 325/324 being tempered out in 13-limit hitchcock. In the 17-limit, 46&53 tempers out 154/153, 256/255, and 273/272. | ||
See [[Amity family #Amity]] or [[Ragismic microtemperaments #Amity]] for | See [[Amity family #Amity]] or [[Ragismic microtemperaments #Amity]] for technical data. | ||
== Interval chain == | == Interval chain == | ||
{| class="wikitable center- | {| class="wikitable center-1 right-2" | ||
|- | |- | ||
! rowspan="2"| | ! rowspan="2"| # | ||
! rowspan="2"| Cents* | ! rowspan="2"| Cents* | ||
! colspan=" | ! colspan="3" | Approximate Ratios | ||
|- | |- | ||
! | ! 7-limit | ||
! | ! 13-limit Extensions<br>Amity Mapping (53 & 152) | ||
! 13-limit Extensions<br>Hitchcock Mapping (46 & 53) | |||
|- | |- | ||
| 0 | | 0 | ||
| 0. | | 0.00 | ||
| 1/1 | |||
| | |||
| | |||
|- | |- | ||
| 1 | | 1 | ||
| 339.43 | | 339.43 | ||
| | | 128/105 | ||
| | |||
| 11/9 | | 11/9 | ||
|- | |- | ||
| 2 | | 2 | ||
| 678.86 | | 678.86 | ||
| 40/27 | |||
| | |||
| | |||
|- | |- | ||
| 3 | | 3 | ||
| 1018.30 | | 1018.30 | ||
| 9/5 | |||
| | |||
| | |||
|- | |- | ||
| 4 | | 4 | ||
| 157.73 | | 157.73 | ||
| 35/32 | | 35/32 | ||
| 12/11 | | | ||
| 12/11, 11/10 | |||
|- | |- | ||
| | 5 | | | 5 | ||
| 497.16 | | 497.16 | ||
| | | '''4/3''' | ||
| | |||
| | |||
|- | |- | ||
| 6 | | 6 | ||
| 836.59 | | 836.59 | ||
| | | 81/50 | ||
| 21/13 | | | ||
| '''13/8''', 21/13 | |||
|- | |- | ||
| 7 | | 7 | ||
| 1176.03 | | 1176.03 | ||
| 65/33, 77/39 | | 63/32, 160/81 | ||
| | | 65/33, 77/39 | ||
| 65/33, 77/39, 128/65 | |||
|- | |- | ||
| 8 | | 8 | ||
| 315.46 | | 315.46 | ||
| 6/5 | |||
| | |||
| | |||
|- | |- | ||
| 9 | | 9 | ||
| 654.89 | | 654.89 | ||
| | | 35/24 | ||
| 16/11 | | | ||
| '''16/11''', 22/15 | |||
|- | |- | ||
| 10 | | 10 | ||
| 994.32 | | 994.32 | ||
| 16/9 | |||
| | |||
| 39/22 | |||
|- | |- | ||
| 11 | | 11 | ||
| 133.75 | | 133.75 | ||
| 27/25 | | 27/25 | ||
| 14/13 | | | ||
| 13/12, 14/13 | |||
|- | |- | ||
| 12 | | 12 | ||
| 473.19 | | 473.19 | ||
| 21/16 | |||
| | |||
| | |||
|- | |- | ||
| 13 | | 13 | ||
| 812.62 | | 812.62 | ||
| | | '''8/5''' | ||
| | |||
| | |||
|- | |- | ||
| 14 | | 14 | ||
| 1152.05 | | 1152.05 | ||
| 35/18 | | 35/18 | ||
| 64/33 | | | ||
| 39/20, 64/33, 88/45 | |||
|- | |- | ||
| 15 | | 15 | ||
| 291.48 | | 291.48 | ||
| | | 32/27 | ||
| 13/11 | |||
| 13/11 | |||
|- | |- | ||
| 16 | | 16 | ||
| 630.92 | | 630.92 | ||
| | | 36/25 | ||
| | |||
| 13/9 | | 13/9 | ||
|- | |- | ||
| 17 | | 17 | ||
| 970.35 | | 970.35 | ||
| | | '''7/4''' | ||
| | |||
| | |||
|- | |- | ||
| 18 | | 18 | ||
| 109.78 | | 109.78 | ||
| 16/15 | |||
| | |||
| | |||
|- | |- | ||
| 19 | | 19 | ||
| 449.21 | | 449.21 | ||
| | | 35/27 | ||
| | |||
| 13/10 | | 13/10 | ||
|- | |- | ||
| 20 | | 20 | ||
| 788.64 | | 788.64 | ||
| | | 63/40 | ||
| | | | ||
| 52/33 | |||
|- | |- | ||
| 21 | | 21 | ||
| 1128.08 | | 1128.08 | ||
| 48/25 | | 48/25 | ||
| 21/11 | | 25/13 | ||
| 21/11, 52/27 | |||
|- | |- | ||
| 22 | | 22 | ||
| 267.51 | | 267.51 | ||
| 7/6 | |||
| | |||
| | |||
|- | |- | ||
| 23 | | 23 | ||
| 606.94 | | 606.94 | ||
| | | 64/45 | ||
| | |||
| | | | ||
|- | |- | ||
| 24 | | 24 | ||
| 946.37 | | 946.37 | ||
| | | 81/70 | ||
| | |||
| 26/15 | | 26/15 | ||
|- | |- | ||
| 25 | | 25 | ||
| 85.81 | | 85.81 | ||
| 21/20 | |||
| | |||
| | |||
|- | |- | ||
| 26 | | 26 | ||
| 425.24 | | 425.24 | ||
| 32/25 | | 32/25 | ||
| 14/11 | | | ||
| 14/11 | |||
|- | |- | ||
| 27 | | 27 | ||
| 764.67 | | 764.67 | ||
| 14/9 | |||
| | |||
| | |||
|- | |- | ||
| 28 | | 28 | ||
| 1104.10 | | 1104.10 | ||
| | | 256/135 | ||
| | |||
| | | | ||
|- | |- | ||
| 29 | | 29 | ||
| 243.53 | | 243.53 | ||
| 147/128 | |||
| 15/13 | | 15/13 | ||
| | | | ||
Line 155: | Line 200: | ||
| 30 | | 30 | ||
| 582.97 | | 582.97 | ||
| 7/5 | |||
| | |||
| | |||
|- | |- | ||
| 31 | | 31 | ||
| 922.40 | | 922.40 | ||
| | | 128/75 | ||
| | | | ||
| 56/33 | |||
|- | |- | ||
| 32 | | 32 | ||
| 61.83 | | 61.83 | ||
| 28/27 | | 28/27 | ||
| 27/26 | |||
| | |||
|- | |- | ||
| 33 | | 33 | ||
| 401.26 | | 401.26 | ||
| | | 63/50 | ||
| | |||
| | | | ||
|- | |- | ||
| 34 | | 34 | ||
| 740.69 | | 740.69 | ||
| 49/32 | |||
| 20/13 | | 20/13 | ||
| | | | ||
Line 179: | Line 230: | ||
| 35 | | 35 | ||
| 1080.13 | | 1080.13 | ||
| 28/15 | |||
| | |||
| | |||
|- | |- | ||
| 36 | | 36 | ||
| 219.56 | | 219.56 | ||
| 256/225 | |||
| 25/22 | | 25/22 | ||
| | | | ||
Line 188: | Line 242: | ||
| 37 | | 37 | ||
| 558.99 | | 558.99 | ||
| 112/81 | |||
| 18/13 | | 18/13 | ||
| | | | ||
|- | |||
| 38 | |||
| 898.42 | |||
| 42/25 | |||
| | |||
| | |||
|- | |||
| 39 | |||
| 37.86 | |||
| 49/48 | |||
| 40/39, 45/44 | |||
| | |||
|} | |} | ||
<nowiki>*</nowiki> in 7-limit POTE tuning | <nowiki>*</nowiki> in 7-limit POTE tuning, octave reduced | ||
== Tuning | == Tuning spectra == | ||
=== Spectrum of | === Spectrum of amity tunings === | ||
13-limit commas: 352/351, 540/539, 625/624, 729/728 | 13-limit commas: 352/351, 540/539, 625/624, 729/728 | ||
Line 201: | Line 268: | ||
! Eigenmonzo | ! Eigenmonzo | ||
! Generator | ! Generator | ||
! | ! Comments | ||
|- | |- | ||
| 10/9 | | 10/9 | ||
Line 221: | Line 288: | ||
| 7/5 | | 7/5 | ||
| 339.417 | | 339.417 | ||
| 7 limit minimax | | 7-odd-limit minimax | ||
|- | |- | ||
| 9/7 | | 9/7 | ||
| 339.441 | | 339.441 | ||
| 9 limit minimax | | 9-odd-limit minimax | ||
|- | |- | ||
| 15/14 | | 15/14 | ||
Line 237: | Line 304: | ||
| 14/11 | | 14/11 | ||
| 339.462 | | 339.462 | ||
| 11 limit minimax | | 11-odd-limit minimax | ||
|- | |- | ||
| 11/9 | | 11/9 | ||
Line 257: | Line 324: | ||
| 11/8 | | 11/8 | ||
| 339.495 | | 339.495 | ||
| 13, 15 limit minimax | | 13- and, 15-odd-limit minimax | ||
|- | |- | ||
| 14/13 | | 14/13 | ||
Line 265: | Line 332: | ||
| 5/4 | | 5/4 | ||
| 339.514 | | 339.514 | ||
| 5 limit minimax | | 5-odd-limit minimax | ||
|- | |- | ||
| 16/15 | | 16/15 | ||
Line 296: | Line 363: | ||
|} | |} | ||
=== Spectrum of | === Spectrum of hitchcock tunings === | ||
13-limit commas: 121/120, 169/168, 176/175, 325/324 | 13-limit commas: 121/120, 169/168, 176/175, 325/324 | ||
Line 339: | Line 406: | ||
| 7/5 | | 7/5 | ||
| 339.417 | | 339.417 | ||
| 7 limit minimax | | 7-odd-limit minimax | ||
|- | |- | ||
| 9/7 | | 9/7 | ||
| 339.441 | | 339.441 | ||
| 9, 11, 13 limit minimax | | 9-, 11-, and 13-odd-limit minimax | ||
|- | |- | ||
| 15/14 | | 15/14 | ||
| 339.444 | | 339.444 | ||
| 15 limit minimax | | 15-odd-limit minimax | ||
|- | |- | ||
| 6/5 | | 6/5 | ||
Line 355: | Line 422: | ||
| 5/4 | | 5/4 | ||
| 339.514 | | 339.514 | ||
| 5 limit minimax | | 5-odd-limit minimax | ||
|- | |- | ||
| 16/15 | | 16/15 | ||
Line 399: | Line 466: | ||
== Scales == | == Scales == | ||
* [[Amity7]] | * [[Amity7]] – proper [[4L 3s]] | ||
* [[Amity11]] | * [[Amity11]] – improper [[7L 4s]] | ||
* [[Amity18]] | * [[Amity18]] – improper [[7L 11s]] | ||
* [[Amity25]] | * [[Amity25]] – improper [[7L 18s]] | ||
* [[Amity32]] | * [[Amity32]] – improper [[7L 25s]] | ||
* [[Amity39]] | * [[Amity39]] – improper [[7L 32s]] | ||
* [[Amity46]] | * [[Amity46]] – proper [[7L 39s]] | ||
[[Category:Amity family]] | [[Category:Amity family]] |