Arcturus: Difference between revisions
m tdhat -> tdlink |
ArrowHead294 (talk | contribs) m Kleen up table |
||
| Line 1: | Line 1: | ||
{{URWTC}} | {{URWTC}} | ||
'''Arcturus''' is the [[rank]]-2 [[regular temperament]] of the 3.5.7 [[subgroup]] that [[tempers out]] the Arcturus comma, [[15625/15309]]. Having an ~[[5/3]] as a generator, this temperament is the application of the [[Pythagorean]] principle of tuning a stack of the next higher prime number and then factoring out powers of the equivalence to [[tritave]] composition. However, a heptatonic [[MOS]] (2L 5s{{angbr|3/1}}) will not suffice to produce an understandable rendition of it because a very close ~5/3 generates a L:s ratio between 4:1 and 5:1, which is beginning to get too lopsided to still be a complete presentation of a temperament. | '''Arcturus''' is the [[non-octave]] [[rank]]-2 [[regular temperament]] of the 3.5.7 [[subgroup]] that [[tempers out]] the Arcturus comma, [[15625/15309]]. Having an ~[[5/3]] as a generator, this temperament is the application of the [[Pythagorean]] principle of tuning a stack of the next higher prime number and then factoring out powers of the equivalence to [[tritave]] composition. However, a heptatonic [[MOS]] (2L 5s{{angbr|3/1}}) will not suffice to produce an understandable rendition of it because a very close ~5/3 generates a L:s ratio between 4:1 and 5:1, which is beginning to get too lopsided to still be a complete presentation of a temperament. | ||
{{tdlink|No-twos subgroup temperaments#Arcturus}} | {{tdlink|No-twos subgroup temperaments#Arcturus}} | ||
== Etymology == | == Etymology == | ||
This temperament is named after the star {{w|Arcturus}}, following a series of | This temperament is named after the star {{w|Arcturus}}, following a series of non-octave temperaments that are named after stars. | ||
{{todo|add etymology|inline=1|text=Add name (person who coined the term) and year (when it was coined).}} | {{todo|add etymology|inline=1|text=Add name (person who coined the term) and year (when it was coined).}} | ||
| Line 17: | Line 17: | ||
|- | |- | ||
! colspan="7" | Generator | ! colspan="7" | Generator | ||
! | ! Cents<br />Hekts | ||
! L | |||
! | ! s | ||
! | ! 2g | ||
! | ! Notes | ||
! | |- style="text-align: center;" | ||
|- | | 6\13 | ||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 877.825<br />600 | |||
| 146.304<br />100 | |||
600 | | 0 | ||
| 1755.651<br />1200 | |||
100 | | L=1 s=0 | ||
1200 | |||
|- | |- | ||
| style="text-align:center;" | | | style="text-align:center;" | | ||
| Line 47: | Line 43: | ||
| style="text-align:center;" | | | style="text-align:center;" | | ||
| style="text-align:center;" | 43\93 | | style="text-align:center;" | 43\93 | ||
| style="text-align:center;" | 879.399 | | style="text-align:center;" | 879.399<br />601.075 | ||
601.075 | | style="text-align:center;" | 143.158<br />97.8495 | ||
| style="text-align:center;" | 143.158 | | style="text-align:center;" | 20.451<br />13.9785 | ||
97.8495 | | style="text-align:center;" | 1758.797<br />1202.151 | ||
| style="text-align:center;" | 20.451 | |||
13.9785 | |||
| style="text-align:center;" | 1758.797 | |||
1202.151 | |||
| style="text-align:center;" | L=7 s=1 | | style="text-align:center;" | L=7 s=1 | ||
|- | |- style="text-align: center;" | ||
| | |||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | 37\80 | ||
| style="text-align:center;" | | | | ||
| | | 879.654<br />601.25 | ||
601. | | 142.647<br />97.5 | ||
| 23.774<br />16.25 | |||
97. | | 1759.38<br />1202.5 | ||
| | | L=6 s=1 | ||
|- style="text-align: center;" | |||
| | |||
1202. | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | 68\147 | ||
| | | 879.816<br />601.3605 | ||
| | | 142.323<br />97.279 | ||
| style="text-align:center;" | | | 25.877<br />17.687 | ||
| | | 1759.632<br />1202.721 | ||
| style="text-align:center;" | | | | ||
|- style="text-align: center;" | |||
| style="text-align:center;" | | | | ||
| | |||
| | | | ||
| | |||
| | | 31\67 | ||
| | |||
| | | | ||
| | | 880.009<br />601.4925 | ||
| style="text-align:center;" | | | 141.937<br />97.015 | ||
| | | 28.387<br />19.403 | ||
| | | 1760.081<br />1202.985 | ||
| | | L=5 s=1 | ||
| | |- style="text-align: center;" | ||
| | | | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | |||
| style="text-align:center;" | | | | ||
| | |||
| | | 87\188 | ||
| 880.16<br />601.596 | |||
| | | 141.634<br />96.8085 | ||
| 30.35<br />20.745 | |||
| | | 1760.32<br />1203.191 | ||
| | | | ||
| style="text-align:center;" | | |- style="text-align: center;" | ||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | 56\121 | ||
| style="text-align:center;" | | | | ||
| 880.243<br />601.653 | |||
| | | 141.468<br />96.694 | ||
| 31.437<br />21.488 | |||
| | | 1760.487<br />1203.306 | ||
| | |||
| | |- style="text-align: center;" | ||
| | |||
| | | | ||
|- | | | ||
| | |||
| | | | ||
| | | | ||
| 81\175 | |||
| | | 880.3335<br />601.714 | ||
| | | 141.288<br />96.571 | ||
| style="text-align:center;" | | | 32.605<br />22.286 | ||
| | | 1760.667<br />1203.429 | ||
| | |||
| | |- style="text-align: center;" | ||
| | |||
| | | | ||
| | |||
| style="text-align:center;" | | | 25\54 | ||
| | |||
| | | | ||
| | | | ||
| | | 880.535<br />601.852 | ||
| style="text-align:center;" | | | 140.886<br />96.296 | ||
| | | 35.221<br />24.074 | ||
| | | 1761.069<br />1203.704 | ||
| | | L=4 s=1 | ||
| | |- style="text-align: center;" | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | |||
| style="text-align:center;" | | | | ||
| | |||
| | | | ||
| 94\203 | |||
| | | 880.708<br />601.97 | ||
| 140.5385<br />96.059 | |||
| | | 37.477<br />25.616 | ||
| | | 1761.4165<br />1203.971 | ||
| style="text-align:center;" | | | | ||
| | |- style="text-align: center;" | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | 69\149 | ||
| | |||
| | | 880.711<br />602.013 | ||
| 140.413<br />95.973 | |||
| style="text-align:center;" | | | 38.294<br />26.1745 | ||
| 1761.542<br />1204.027 | |||
| style="text-align:center;" | | | | ||
|- style="text-align: center;" | |||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | 113\244 | ||
| style="text-align:center;" | | | 880.823<br />602.049 | ||
| | | 140.308<br />95.902 | ||
| | | 38.9745<br />26.639 | ||
| 1761.647<br />1204.098 | |||
| | | | ||
|- style="text-align: center;" | |||
| style="text-align:center;" | | | | ||
| | |||
| | | | ||
| | |||
| style="text-align:center;" | | | 44\95 | ||
| | | | ||
| | | | ||
| | | 880.9055<br />602.105 | ||
| | | 140.144<br />95.7895 | ||
| | | 40.041<br />27.368 | ||
| style="text-align:center;" | | | 1761.811<br />1204.2105 | ||
| | | L=7 s=2 | ||
| | |- style="text-align: center;" | ||
| style="text-align:center;" | | | | ||
| | |||
| | | | ||
| | |||
| | | | ||
| | |||
| | | 107\231 | ||
| 880.992<br />602.1645 | |||
| style="text-align:center;" | | | 139.971<br />95.671 | ||
| | | 41.168<br />28.1385 | ||
| | | 1761.984<br />1204.329. | ||
| | | | ||
| | |- style="text-align: center;" | ||
| | | | ||
| | |||
| | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| 63\136 | |||
| | | | ||
| 881.053<br />602.206 | |||
| | | 139.85<br />95.588 | ||
| 41.955<br />28.6765 | |||
| style="text-align:center;" | | | 1762.105<br />1204.412 | ||
| | |||
| | |- style="text-align: center;" | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | |||
| | |||
| | | | ||
| | | 82\177 | ||
| | | 881.132<br />602.26 | ||
| style="text-align:center;" | | | 139.692<br />95.48 | ||
| 42.982<br />22.034 | |||
| style="text-align:center;" | | | 1762.263<br />1204.52 | ||
| | |||
| | |- style="text-align: center;" | ||
| | |||
| | | | ||
| 19\41 | |||
| | | | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | 881.394<br />602.439 | ||
| | | 139.167<br />95.122 | ||
| | | 46.389<br />31.707 | ||
| style="text-align:center;" | | | 1762.788<br />1204.878 | ||
| | | L=3 s=1 | ||
| | |- style="text-align: center;" | ||
| | |||
| | | | ||
| | |||
| | | | ||
| | |||
| style="text-align:center;" | | | | ||
| 89\192 | |||
| | | 881.635<br />602.604 | ||
| | | 138.684<br />94.792 | ||
| | | 49.53<br />33.854 | ||
| style="text-align:center;" | | | 1763.271<br />1205.208 | ||
| | | | ||
|- style="text-align: center;" | |||
| | |||
| | | | ||
| | | | ||
| | | | ||
| | |||
| style="text-align:center;" | | | 70\151 | ||
| | |||
| | | 881.701<br />602.649 | ||
| 138.553<br />94.702 | |||
| | | 50.383<br />25.828 | ||
| 1763.402<br />1205.298 | |||
| | | | ||
| | |- style="text-align: center;" | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
| style="text-align:center;" | | | 121\261 | ||
| | | 881.794<br />602.682 | ||
| 138.4565<br />89.655 | |||
| style="text-align:center;" | | | 51.01<br />34.866 | ||
| 1763.4985<br />1205.362 | |||
| | | | ||
|- style="text-align: center;" | |||
| | | | ||
| | |||
| | | | ||
| | | | ||
| style="text-align:center;" | | | 51\110 | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | | 881.8155<br />602.727 | ||
| | | 138.324<br />94.5455 | ||
| | | 51.8715<br />35.4545 | ||
| | | 1763.631<br />1205.4545 | ||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 134\289 | |||
| 881.875<br />602.768 | |||
| 138.204<br />94.464 | |||
| 52.649<br />35.986 | |||
| 1763.751<br />1205.536 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 83\179 | |||
| | |||
| 881.912<br />602.793 | |||
| 138.131<br />94.413 | |||
| 53.172<br />36.313 | |||
| 1763.824<br />1205.586 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 115\248 | |||
| 881.955<br />602.823 | |||
| 138.045<br />94.355 | |||
| 53.684<br />36.6935 | |||
| 1763.91<br />1205.645 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| 32\69 | |||
| | |||
| | |||
| | |||
| 882.066<br />602.899 | |||
| 137.823<br />94.203 | |||
| 55.129<br />37.681 | |||
| 1764.132<br />1205.797 | |||
| L=5 s=2 | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 109\235 | |||
| 882.183<br />602.979 | |||
| 137.588<br />94.043 | |||
| 56.654<br />38.723 | |||
| 1764.367<br />1205.957 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 77\166 | |||
| | |||
| 882.232<br />603.012 | |||
| 137.491<br />93.976 | |||
| 57.288<br />39.157 | |||
| 1764.464<br />1206.024 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 122\263 | |||
| 882.276<br />603.042 | |||
| 137.404<br />93.916 | |||
| 57.854<br />39.544 | |||
| 1764.551<br />1206.084 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| 45\97 | |||
| | |||
| | |||
| 882.35<br />603.093 | |||
| 137.2545<br />93.814 | |||
| 58.823<br />40.206 | |||
| 1764.7005<br />1203.185 | |||
| L=7 s=3 | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 103\222 | |||
| 882.439<br />603.153 | |||
| 137.078<br />93.694 | |||
| 59.972<br />40.991 | |||
| 1764.877<br />1206.306 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 58\125 | |||
| | |||
| 882.507<br />603.2 | |||
| 136.941<br />93.6 | |||
| 60.863<br />41.6 | |||
| 1765.014<br />1206.4 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 71\153 | |||
| 882.607<br />603.268 | |||
| 136.742<br />93.464 | |||
| 62.155<br />42.484 | |||
| 1765.213<br />1206.536 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| 13\28 | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 883.0505<br />603.571 | |||
| 135.854<br />92.857 | |||
| 67.93<br />46.429 | |||
| 1766.101<br />1207.143 | |||
| L=2 s=1 | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 72\155 | |||
| 883.489<br />603.871 | |||
| 134.9775<br />92.258 | |||
| 73.624<br />50.323 | |||
| 1766.9775<br />1207.742 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 59\127 | |||
| | |||
| 883.585<br />603.937 | |||
| 134.784<br />92.126 | |||
| 74.88<br />51.181 | |||
| 1767.171<br />1207.574 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 105\226 | |||
| 883.652<br />603.982 | |||
| 134.652<br />92.035 | |||
| 75.742<br />51.77 | |||
| 1767.303<br />1207.964 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| 46\99 | |||
| | |||
| | |||
| 883.737<br />604.04 | |||
| 134.482<br />91.919 | |||
| 76.847<br />52.525 | |||
| 1767.473<br />1208.081 | |||
| L=7 s=4 | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 125\269 | |||
| 883.808<br />604.089 | |||
| 134.339<br />91.822 | |||
| 77.775<br />53.16 | |||
| 1767.616<br />1208.178 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 79\170 | |||
| | |||
| 883.85<br />604.118 | |||
| 134.256<br />91.765 | |||
| 78.316<br />53.529 | |||
| 1767.699<br />1208.235 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 112\241 | |||
| 883.896<br />604.149 | |||
| 134.163<br />91.701 | |||
| 78.919<br />53.942 | |||
| 1767.792<br />1208.299 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| 33\71 | |||
| | |||
| | |||
| | |||
| 884.007<br />604.225 | |||
| 133.94<br />91.549 | |||
| 80.364<br />54.93 | |||
| 1768.0145<br />1208.451 | |||
| L=5 s=3 | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 119\256 | |||
| 884.112<br />604.297 | |||
| 133.731<br />91.406 | |||
| 81.725<br />55.859 | |||
| 1768.224<br />1208.594 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 86\185 | |||
| | |||
| 884.152<br />604.324 | |||
| 133.651<br />91.351 | |||
| 82.247<br />56.216 | |||
| 1768.304<br />1208.649 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 139\299 | |||
| 884.186<br />604.348 | |||
| 133.582<br />91.304 | |||
| 82.694<br />56.522 | |||
| 1768.373<br />1208.696 | |||
| Golden Arcturus is near here | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| 53\114 | |||
| | |||
| | |||
| 884.24<br />604.386 | |||
| 133.4705<br />91.228 | |||
| 83.419<br />57.0175 | |||
| 1768.4845<br />1208.772 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 126\271 | |||
| 884.303<br />604.428 | |||
| 133.347<br />91.144 | |||
| 84.219<br />57.565 | |||
| 1768.608<br />1208.856 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 73\157 | |||
| | |||
| 884.3485<br />604.459 | |||
| 133.258<br />91.083 | |||
| 84.8005<br />57.962 | |||
| 1768.697<br />1208.917 | |||
91.144 | |||
57.565 | |||
| | |||
| | |||
604.459 | |||
91.083 | |||
57.962 | |||
1208.917 | |||
| style="text-align:center;" |5/3-Pythagorean is near here | | style="text-align:center;" |5/3-Pythagorean is near here | ||
|- | |- style="text-align: center;" | ||
| | |||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
| style="text-align:center;" | | | 93\200 | ||
| | | 884.409<br />604.5 | ||
604. | | 133.137<br />91 | ||
| | | 85.588<br />58.5 | ||
| 1768.818<br />1209 | |||
| style="text-align:center;" | | | | ||
|- style="text-align: center;" | |||
| | | | ||
| | |||
| | | 20\43 | ||
| | | | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | 884.63<br />604.651 | ||
| | | 132.6945<br />90.698 | ||
| | | 88.463<br />60.465 | ||
| style="text-align:center;" | | | 1769.2605<br />1209.302 | ||
| | | L=3 s=2 | ||
604. | |- style="text-align: center;" | ||
| | | | ||
| | |||
| style="text-align:center;" | | | | ||
| | |||
| | | | ||
| | |||
| | | 87\187 | ||
| | | 884.867<br />604.813 | ||
| | | 132.2215<br />90.374 | ||
| style="text-align:center;" | | | 91.538<br />62.567 | ||
| | | 1769.7335<br />1209.626 | ||
| | | | ||
|- style="text-align: center;" | |||
| style="text-align:center;" | | | | ||
| | | | ||
| | | | ||
| | |||
| | | | ||
| 67\144 | |||
| | | | ||
| 884.937<br />604.861 | |||
| style="text-align:center;" | | | 132.08<br />90.278 | ||
| 92.456<br />63.194 | |||
| | | 1769.875<br />1209.722 | ||
| | | | ||
| | |- style="text-align: center;" | ||
| | | | ||
| | | | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | | ||
| | | 114\245 | ||
| 884.991<br />604.898 | |||
| | | 131.972<br />90.204 | ||
| 93.157<br />52.6735 | |||
| style="text-align:center;" | | | 1769.983<br />1209.896 | ||
| | |||
| | |- style="text-align: center;" | ||
| | |||
| | |||
| | | | ||
| | | | ||
| | | 47\101 | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | 885.068<br />604.9505 | ||
| | | 131.819<br />90.099 | ||
| | | 94.156<br />64.356 | ||
| | | 1770.136<br />1209.901 | ||
| L=7 s=5 | |||
| | |- style="text-align: center;" | ||
| | |||
| | | | ||
| | |||
| | | | ||
| | |||
| style="text-align:center;" | | | | ||
| | | 121\260 | ||
| | | 885.141<br />605 | ||
| | | 131.674<br />90 | ||
| | | 95.098<br />65 | ||
| | | 1770.281<br />1210 | ||
| | | | ||
| style="text-align:center;" | | |- style="text-align: center;" | ||
| | | | ||
| | | | ||
| | |||
| | | | ||
| | |||
| | | 74\159 | ||
| | |||
| style="text-align:center;" | | | 885.187<br />605.031 | ||
| 131.582<br />89.937 | |||
| | | 95.696<br />65.409 | ||
| | | 1770.373<br />1210.063 | ||
| | |||
| | |- style="text-align: center;" | ||
| | | | ||
| style="text-align:center;" | | | | ||
| | | | ||
| | | | ||
| | | | ||
| | | | ||
605 | | 101\217 | ||
| | | 885.242<br />605.069 | ||
| 131.4715<br />89.862 | |||
| | | 96.4125<br />65.899 | ||
| 1770.4835<br />1210.138 | |||
| | | | ||
|- style="text-align: center;" | |||
| | | | ||
| | |||
| | |||
| 27\58 | |||
| | |||
| | |||
| | |||
| 885.393<br />605.172 | |||
| 131.169<br />89.655 | |||
| 98.377<br />67.241 | |||
| 1770.786<br />1210.345 | |||
| L=4 s=3 | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 88\189 | |||
| 885.566<br />605.291 | |||
| 130.822<br />89.418 | |||
| 100.6325<br />68.783 | |||
| 1771.133<br />1210.582 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 61\131 | |||
| | |||
| 885.643<br />605.3435 | |||
| 130.669<br />89.313 | |||
| 101.631<br />69.466 | |||
| 1771.286<br />1210.687 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 95\204 | |||
| 885.714<br />605.392 | |||
| 130.526<br />89.216 | |||
| 102.556<br />70.098 | |||
| 1771.429<br />1210.784 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| 34\73 | |||
| | |||
| | |||
| 885.842<br />605.4795 | |||
| 130.271<br />89.041 | |||
| 104.217<br />71.233 | |||
| 1771.684<br />1210.959 | |||
| L=5 s=4 | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 75\161 | |||
| 886.004<br />605.59 | |||
| 129.947<br />88.82 | |||
| 106.3205<br />72.671 | |||
| 1772.008<br />1211.18 | |||
| | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 41\88 | |||
| | |||
| 886.138<br />605.682 | |||
| 129.679<br />88.636 | |||
| 108.065<br />73.864 | |||
| 1772.276<br />1211.364 | |||
| L=6 s=5 | |||
|- style="text-align: center;" | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 48\103 | |||
| 886.348<br />605.825 | |||
| 129.259<br />88.3495 | |||
| 110.7935<br />75.728 | |||
| 1772.696<br />1211.6505 | |||
| L=7 s=6 | |||
|- style="text-align: center;" | |||
| 7\15 | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| | |||
| 887.579<br />606.667 | |||
| colspan="2" 126.797<br />86.667 | |||
| 1775.158<br />1213.333 | |||
| L=1 s=1 | |||
| | |||
606.667 | |||
| colspan="2" | |||
86.667 | |||
1213.333 | |||
|} | |} | ||
{{scale tree}} | |||
== Scales == | == Scales == | ||
Revision as of 20:42, 23 November 2024
| This page on a regular temperament, temperament collection, or aspect of regular temperament theory is being revised for clarity as part of WikiProject TempClean. |
Arcturus is the non-octave rank-2 regular temperament of the 3.5.7 subgroup that tempers out the Arcturus comma, 15625/15309. Having an ~5/3 as a generator, this temperament is the application of the Pythagorean principle of tuning a stack of the next higher prime number and then factoring out powers of the equivalence to tritave composition. However, a heptatonic MOS (2L 5s⟨3/1⟩) will not suffice to produce an understandable rendition of it because a very close ~5/3 generates a L:s ratio between 4:1 and 5:1, which is beginning to get too lopsided to still be a complete presentation of a temperament.
For technical data, see No-twos subgroup temperaments#Arcturus.
Etymology
This temperament is named after the star Arcturus, following a series of non-octave temperaments that are named after stars.
Chords
Arcturus contains the triad 5:7:9 (used in Bohlen-Pierce harmony) and the triad 27:35:45 which divides 5/3 into two nearly-equal parts.
Tuning spectrum
Below is a list of MOS families which present it completely (however smearily) using a generator of 845.3 to 951.0 cents:
| Generator | Cents Hekts |
L | s | 2g | Notes | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 6\13 | 877.825 600 |
146.304 100 |
0 | 1755.651 1200 |
L=1 s=0 | ||||||
| 43\93 | 879.399 601.075 |
143.158 97.8495 |
20.451 13.9785 |
1758.797 1202.151 |
L=7 s=1 | ||||||
| 37\80 | 879.654 601.25 |
142.647 97.5 |
23.774 16.25 |
1759.38 1202.5 |
L=6 s=1 | ||||||
| 68\147 | 879.816 601.3605 |
142.323 97.279 |
25.877 17.687 |
1759.632 1202.721 |
|||||||
| 31\67 | 880.009 601.4925 |
141.937 97.015 |
28.387 19.403 |
1760.081 1202.985 |
L=5 s=1 | ||||||
| 87\188 | 880.16 601.596 |
141.634 96.8085 |
30.35 20.745 |
1760.32 1203.191 |
|||||||
| 56\121 | 880.243 601.653 |
141.468 96.694 |
31.437 21.488 |
1760.487 1203.306 |
|||||||
| 81\175 | 880.3335 601.714 |
141.288 96.571 |
32.605 22.286 |
1760.667 1203.429 |
|||||||
| 25\54 | 880.535 601.852 |
140.886 96.296 |
35.221 24.074 |
1761.069 1203.704 |
L=4 s=1 | ||||||
| 94\203 | 880.708 601.97 |
140.5385 96.059 |
37.477 25.616 |
1761.4165 1203.971 |
|||||||
| 69\149 | 880.711 602.013 |
140.413 95.973 |
38.294 26.1745 |
1761.542 1204.027 |
|||||||
| 113\244 | 880.823 602.049 |
140.308 95.902 |
38.9745 26.639 |
1761.647 1204.098 |
|||||||
| 44\95 | 880.9055 602.105 |
140.144 95.7895 |
40.041 27.368 |
1761.811 1204.2105 |
L=7 s=2 | ||||||
| 107\231 | 880.992 602.1645 |
139.971 95.671 |
41.168 28.1385 |
1761.984 1204.329. |
|||||||
| 63\136 | 881.053 602.206 |
139.85 95.588 |
41.955 28.6765 |
1762.105 1204.412 |
|||||||
| 82\177 | 881.132 602.26 |
139.692 95.48 |
42.982 22.034 |
1762.263 1204.52 |
|||||||
| 19\41 | 881.394 602.439 |
139.167 95.122 |
46.389 31.707 |
1762.788 1204.878 |
L=3 s=1 | ||||||
| 89\192 | 881.635 602.604 |
138.684 94.792 |
49.53 33.854 |
1763.271 1205.208 |
|||||||
| 70\151 | 881.701 602.649 |
138.553 94.702 |
50.383 25.828 |
1763.402 1205.298 |
|||||||
| 121\261 | 881.794 602.682 |
138.4565 89.655 |
51.01 34.866 |
1763.4985 1205.362 |
|||||||
| 51\110 | 881.8155 602.727 |
138.324 94.5455 |
51.8715 35.4545 |
1763.631 1205.4545 |
|||||||
| 134\289 | 881.875 602.768 |
138.204 94.464 |
52.649 35.986 |
1763.751 1205.536 |
|||||||
| 83\179 | 881.912 602.793 |
138.131 94.413 |
53.172 36.313 |
1763.824 1205.586 |
|||||||
| 115\248 | 881.955 602.823 |
138.045 94.355 |
53.684 36.6935 |
1763.91 1205.645 |
|||||||
| 32\69 | 882.066 602.899 |
137.823 94.203 |
55.129 37.681 |
1764.132 1205.797 |
L=5 s=2 | ||||||
| 109\235 | 882.183 602.979 |
137.588 94.043 |
56.654 38.723 |
1764.367 1205.957 |
|||||||
| 77\166 | 882.232 603.012 |
137.491 93.976 |
57.288 39.157 |
1764.464 1206.024 |
|||||||
| 122\263 | 882.276 603.042 |
137.404 93.916 |
57.854 39.544 |
1764.551 1206.084 |
|||||||
| 45\97 | 882.35 603.093 |
137.2545 93.814 |
58.823 40.206 |
1764.7005 1203.185 |
L=7 s=3 | ||||||
| 103\222 | 882.439 603.153 |
137.078 93.694 |
59.972 40.991 |
1764.877 1206.306 |
|||||||
| 58\125 | 882.507 603.2 |
136.941 93.6 |
60.863 41.6 |
1765.014 1206.4 |
|||||||
| 71\153 | 882.607 603.268 |
136.742 93.464 |
62.155 42.484 |
1765.213 1206.536 |
|||||||
| 13\28 | 883.0505 603.571 |
135.854 92.857 |
67.93 46.429 |
1766.101 1207.143 |
L=2 s=1 | ||||||
| 72\155 | 883.489 603.871 |
134.9775 92.258 |
73.624 50.323 |
1766.9775 1207.742 |
|||||||
| 59\127 | 883.585 603.937 |
134.784 92.126 |
74.88 51.181 |
1767.171 1207.574 |
|||||||
| 105\226 | 883.652 603.982 |
134.652 92.035 |
75.742 51.77 |
1767.303 1207.964 |
|||||||
| 46\99 | 883.737 604.04 |
134.482 91.919 |
76.847 52.525 |
1767.473 1208.081 |
L=7 s=4 | ||||||
| 125\269 | 883.808 604.089 |
134.339 91.822 |
77.775 53.16 |
1767.616 1208.178 |
|||||||
| 79\170 | 883.85 604.118 |
134.256 91.765 |
78.316 53.529 |
1767.699 1208.235 |
|||||||
| 112\241 | 883.896 604.149 |
134.163 91.701 |
78.919 53.942 |
1767.792 1208.299 |
|||||||
| 33\71 | 884.007 604.225 |
133.94 91.549 |
80.364 54.93 |
1768.0145 1208.451 |
L=5 s=3 | ||||||
| 119\256 | 884.112 604.297 |
133.731 91.406 |
81.725 55.859 |
1768.224 1208.594 |
|||||||
| 86\185 | 884.152 604.324 |
133.651 91.351 |
82.247 56.216 |
1768.304 1208.649 |
|||||||
| 139\299 | 884.186 604.348 |
133.582 91.304 |
82.694 56.522 |
1768.373 1208.696 |
Golden Arcturus is near here | ||||||
| 53\114 | 884.24 604.386 |
133.4705 91.228 |
83.419 57.0175 |
1768.4845 1208.772 |
|||||||
| 126\271 | 884.303 604.428 |
133.347 91.144 |
84.219 57.565 |
1768.608 1208.856 |
|||||||
| 73\157 | 884.3485 604.459 |
133.258 91.083 |
84.8005 57.962 |
1768.697 1208.917 |
5/3-Pythagorean is near here | ||||||
| 93\200 | 884.409 604.5 |
133.137 91 |
85.588 58.5 |
1768.818 1209 |
|||||||
| 20\43 | 884.63 604.651 |
132.6945 90.698 |
88.463 60.465 |
1769.2605 1209.302 |
L=3 s=2 | ||||||
| 87\187 | 884.867 604.813 |
132.2215 90.374 |
91.538 62.567 |
1769.7335 1209.626 |
|||||||
| 67\144 | 884.937 604.861 |
132.08 90.278 |
92.456 63.194 |
1769.875 1209.722 |
|||||||
| 114\245 | 884.991 604.898 |
131.972 90.204 |
93.157 52.6735 |
1769.983 1209.896 |
|||||||
| 47\101 | 885.068 604.9505 |
131.819 90.099 |
94.156 64.356 |
1770.136 1209.901 |
L=7 s=5 | ||||||
| 121\260 | 885.141 605 |
131.674 90 |
95.098 65 |
1770.281 1210 |
|||||||
| 74\159 | 885.187 605.031 |
131.582 89.937 |
95.696 65.409 |
1770.373 1210.063 |
|||||||
| 101\217 | 885.242 605.069 |
131.4715 89.862 |
96.4125 65.899 |
1770.4835 1210.138 |
|||||||
| 27\58 | 885.393 605.172 |
131.169 89.655 |
98.377 67.241 |
1770.786 1210.345 |
L=4 s=3 | ||||||
| 88\189 | 885.566 605.291 |
130.822 89.418 |
100.6325 68.783 |
1771.133 1210.582 |
|||||||
| 61\131 | 885.643 605.3435 |
130.669 89.313 |
101.631 69.466 |
1771.286 1210.687 |
|||||||
| 95\204 | 885.714 605.392 |
130.526 89.216 |
102.556 70.098 |
1771.429 1210.784 |
|||||||
| 34\73 | 885.842 605.4795 |
130.271 89.041 |
104.217 71.233 |
1771.684 1210.959 |
L=5 s=4 | ||||||
| 75\161 | 886.004 605.59 |
129.947 88.82 |
106.3205 72.671 |
1772.008 1211.18 |
|||||||
| 41\88 | 886.138 605.682 |
129.679 88.636 |
108.065 73.864 |
1772.276 1211.364 |
L=6 s=5 | ||||||
| 48\103 | 886.348 605.825 |
129.259 88.3495 |
110.7935 75.728 |
1772.696 1211.6505 |
L=7 s=6 | ||||||
| 7\15 | 887.579 606.667 |
colspan="2" 126.797 86.667 |
1775.158 1213.333 |
L=1 s=1 | |||||||
| Template: Scale tree is deprecated. Please use Template: MOS tuning spectrum instead.
Details: Use of a single Comments parameter has become unmaintainable. Existing scale trees should be migrated to the new template, where comments are entered using a step ratio p/q as a parameter: {{MOS tuning spectrum
| 3/2 = Example comment
| 4/3 = Another example comment
}}
|
Lua error in Module:MOS at line 28: attempt to index local 'equave' (a nil value).
Scales
- 9L 2s (3/1-equivalent) (mini chromatic, aka sub-Arcturus)
- 11L 2s (3/1-equivalent) (anti-chromatic, aka anti-Arcturus)
- 15L 2s (3/1-equivalent) (mini enharmonic, aka super-Arcturus 15L 2s)
- 17L 2s (3/1-equivalent) (enharmonic, aka super-Arcturus 17L 2s)
- 2L 17s (3/1-equivalent) (anti-enharmonic, aka trans-Arcturus 2L 7s)