|
Tag: Redirect target changed |
| (6 intermediate revisions by 3 users not shown) |
| Line 1: |
Line 1: |
| The Pythagorean family tempers out the Pythagorean comma, 531441/524288 = {{monzo| -19 12 }}, and hence the fifths form a closed 12-note circle of fifths, identical to [[12edo]]. While the tuning of the fifth will be that of 12et, two cents flat, the tuning of the larger primes is not so constrained, and the point of these temperaments is to improve on it.
| | #REDIRECT [[Pythagorean]] |
| | |
| = Pythagorean =
| |
| | |
| Comma list: 531441/524288
| |
| | |
| [[POTE generator]]: ~5/4 = 384.884 or ~81/80 = 15.116
| |
| | |
| Mapping: [{{val| 12 19 0 }}, {{val| 0 0 1 }}
| |
| | |
| {{Val list|legend=1| 12, 72, 84, 156, 240, 396b }}
| |
| | |
| = Compton =
| |
| In terms of the normal list, compton adds 413343/409600 = {{monzo| -14 10 -2 1 }} to the Pythagorean comma; however it can also be characterized by saying it adds 225/224. Compton, however, does not need to be used as a 7-limit temperament; in the 5-limit it becomes the rank two 5-limit temperament tempering out the Pythagorean comma. In terms of equal temperaments, it is the 12&72 temperament, and [[72edo]], [[84edo]] or [[240edo]] make for good tunings. Possible generators are 21/20, 10/9, the secor, 6/5, 5/4, 7/5 and most importantly, 81/80.
| |
| | |
| In the either the 5 or 7-limit, [[240edo]] is an excellent tuning, with 81/80 coming in at 15 cents exactly. The major third is sharp by 13.686 cents, and the minor third flat by 15.641 cents; adjusting these down and up by 15 cents puts them in excellent tune.
| |
| | |
| In terms of the normal comma list, we may add 8019/8000 to get to the 11-limit version of compton, which also adds 441/440. For this [[72edo]] can be recommended as a tuning.
| |
| | |
| Comma list: 225/224, 250047/250000
| |
| | |
| [[POTE generator]]: ~5/4 = 383.775 or ~81/80 = 16.225
| |
| | |
| Mapping: [{{val| 12 19 0 -22 }}, {{val| 0 0 1 2 }}]
| |
| | |
| {{Val list|legend=1| 12, 60, 72, 228, 300c, 372bc, 444bc }}
| |
| | |
| == 11-limit ==
| |
| Comma list: 225/224, 441/440, 4375/4356
| |
| | |
| [[POTE generator]]: ~5/4 = 383.266 or ~81/80 = 16.734
| |
| | |
| Mapping: [{{val|12 19 0 -22 -42 }}, {{val| 0 0 1 2 3 }}]
| |
| | |
| {{Val list|legend=1| 12, 60e, 72 }}
| |
| | |
| === 13-limit ===
| |
| Comma list: 225/224, 441/440, 351/350, 364/363
| |
| | |
| POTE generator: ~5/4 = 383.963 or ~81/80 = 16.037
| |
| | |
| Mapping: [{{val| 12 19 0 -22 -42 -67 }}, {{val| 0 0 1 2 3 4 }}]
| |
| | |
| {{Val list|legend=1| 72, 228f, 300cf }}
| |
| | |
| Badness: 0.0219
| |
| | |
| === Comptone ===
| |
| Comma list: 225/224, 441/440, 325/324, 1001/1000
| |
| | |
| POTE generator: ~5/4 = 382.612 or ~81/80 = 17.388
| |
| | |
| Mapping: [{{val| 12 19 0 -22 -42 100 }}, {{val| 0 0 1 2 3 -2 }}]
| |
| | |
| {{Val list|legend=1| 12, 60e, 72, 204cdef, 276cdef }}
| |
| | |
| Badness: 0.0251
| |
| | |
| = Catler =
| |
| In terms of the normal comma list, catler is characterized by the addition of the schisma, 32805/32768, to the Pythagorean comma, though it can also be characterized as adding 81/80, 128/125 or 648/625. In any event, the 5-limit is exactly the same as the 5-limit of [[12edo]]. Catler can also be characterized as the 12&24 temperament. [[36edo]] or [[48edo]] are possible tunings. Possible generators are 36/35, 21/20, 15/14, 8/7, 7/6, 6/5, 9/7, 7/5, and most importantly, 64/63.
| |
| | |
| Comma list: 81/80, 128/125
| |
| | |
| [[POTE generator]]: ~64/63 = 26.790
| |
| | |
| Mapping: [{{val| 12 19 28 0 }}, {{val| 0 0 0 1 }}]
| |
| | |
| {{Val list|legend=1| 12, 36, 48, 132, 180 }}
| |
| | |
| ==11-limit==
| |
| Commas: 81/80, 99/98, 128/125
| |
| | |
| POTE generator: ~36/35 = 22.723
| |
| | |
| Map: [<12 19 28 0 -26|, <0 0 0 1 2|]
| |
| | |
| EDOs: 12, 48c, 108cd
| |
| | |
| Badness: 0.0582
| |
| | |
| ==Catlat==
| |
| Commas: 81/80, 128/125, 540/539
| |
| | |
| POTE generator: ~36/35 = 27.864
| |
| | |
| Map: [<12 19 28 0 109|, <0 0 0 1 -2|]
| |
| | |
| EDOs: 36, 48c, 84c
| |
| | |
| Badness: 0.0819
| |
| | |
| ==Catcall==
| |
| Commas: 56/55, 81/80, 128/125
| |
| | |
| POTE generator: ~36/35 = 32.776
| |
| | |
| Map: [<12 19 28 0 8|, <0 0 0 1 1|]
| |
| | |
| EDOs: 12, 24, 36, 72ce
| |
| | |
| Badness: 0.0345
| |
| | |
| ===13-limit===
| |
| Commas: 56/55, 66/65, 81/80, 105/104
| |
| | |
| POTE generator: ~36/35 = 37.232
| |
| | |
| Map: [<12 19 28 0 8 11|, <0 0 0 1 1 1|]
| |
| | |
| EDOs: 12f, 24, 36f, 60cf
| |
| | |
| Badness: 0.0284
| |
| | |
| ==Duodecic==
| |
| Commas: 56/55, 81/80, 91/90, 128/125
| |
| | |
| POTE generator: ~36/35 = 37.688
| |
| | |
| Map: [<12 19 28 0 8 78|, <0 0 0 1 1 -1|]
| |
| | |
| EDOs: 12, 24, 36, 60c
| |
| | |
| Badness: 0.0383
| |
| | |
| ===17-limit===
| |
| Commas: 51/50, 56/55, 81/80, 91/90, 128/125
| |
| | |
| POTE generator: ~36/35 = 38.097
| |
| | |
| Map: [<12 19 28 0 8 78 49|, <0 0 0 1 1 -1 0|]
| |
| | |
| EDOs: 12, 24, 36, 60c
| |
| | |
| Badness: 0.0275
| |
| | |
| ===19-limit===
| |
| Commas: 51/50, 56/55, 76/75, 81/80, 91/90, 96/95
| |
| | |
| POTE generator: ~36/35 = 38.080
| |
| | |
| Map: [<12 19 28 0 8 78 49 51|, <0 0 0 1 1 -1 0 0|]
| |
| | |
| EDOs: 12, 24, 36, 60c
| |
| | |
| Badness: 0.0209
| |
| | |
| ==Duodecim==
| |
| Commas: 36/35, 50/49, 64/63
| |
| | |
| POTE generator: ~45/44 = 34.977
| |
| | |
| Map: [<12 19 28 34 0|, <0 0 0 0 1|]
| |
| | |
| EDOs: 12, 24d
| |
| | |
| =Omicronbeta temperament=
| |
| Commas: 225/224, 243/242, 441/440, 4375/4356
| |
| | |
| Generator: ~13/8 = 837.814
| |
| | |
| Map: [<72 114 167 202 249 266|, <0 0 0 0 0 1|]
| |
| | |
| EDOs: 72, 144, 216c, 288cdf, 504bcdef
| |
| | |
| Badness: 0.0300
| |
| | |
| =Hours=
| |
| Commas: 19683/19600, 33075/32768
| |
| | |
| POTE generator: ~225/224 = 2.100
| |
| | |
| Map: [<24 38 0 123 83|, <0 0 1 -1 0|]
| |
| | |
| Wedgie: <0 24 -24 38 -38 -123|
| |
| | |
| EDOs: 24, 48, 72, 312bd, 384bcd, 456bcd, 528bcd, 600bcd
| |
| | |
| Badness: 0.1161
| |
| | |
| ==11-limit==
| |
| Commas: 243/242, 385/384, 9801/9800
| |
| | |
| POTE generator: ~225/224 = 2.161
| |
| | |
| Map: [<24 38 0 123 83|, <0 0 1 -1 0|]
| |
| | |
| EDOs: 24, 48, 72, 312bd, 384bcd, 456bcde, 528bcde
| |
| | |
| Badness: 0.0362
| |
| | |
| ==13-limit==
| |
| Commas: 243/242, 351/350, 364/363, 385/384
| |
| | |
| POTE generator: ~225/224 = 3.955
| |
| | |
| Map: [<24 38 0 123 83 33|, <0 0 1 -1 0 1|]
| |
| | |
| EDOs: 24, 48f, 72, 168df, 240df
| |
| | |
| Badness: 0.0269
| |
| | |
| [[Category:Theory]]
| |
| [[Category:Temperament family]] | |
| [[Category:Pythagorean]]
| |
| [[Category:Rank 2]]
| |