Ploidacot/Omega-pentacot: Difference between revisions
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== Intervals and notation == | == Intervals and notation == | ||
While there is no agreed-upon notation system for omega-pentacot, the following is based on interpreting the generator as a semitone (1/5 of a fourth), allowing for an ^ or v to stand for a 1/5 of an ''inversed'' diminished second (equivalent to the [[Pythagorean comma]]), so vvvC# and ^^Db are enharmonic. | |||
{| class="wikitable" | {| class="wikitable" | ||
| Line 12: | Line 12: | ||
! Notation | ! Notation | ||
! Name | ! Name | ||
|- | |||
| −30 | |||
| 611.730 | |||
| F# | |||
| augmented fourth | |||
|- | |||
| −29 | |||
| 711.339 | |||
| ^^G | |||
| | |||
|- | |||
| −28 | |||
| 810.948 | |||
| vG# | |||
| | |||
|- | |||
| −27 | |||
| 910.557 | |||
| ^A | |||
| | |||
|- | |||
| −26 | |||
| 1010.166 | |||
| vvA# | |||
| | |||
|- | |||
| −25 | |||
| 1109.775 | |||
| B | |||
| major seventh | |||
|- | |||
| −24 | |||
| 9.384 | |||
| ^^C | |||
| | |||
|- | |||
| −23 | |||
| 108.993 | |||
| vC# | |||
| | |||
|- | |||
| −22 | |||
| 208.602 | |||
| ^D | |||
| | |||
|- | |||
| −21 | |||
| 308.211 | |||
| vvD# | |||
| | |||
|- | |||
| −20 | |||
| 407.820 | |||
| E | |||
| major third | |||
|- | |||
| −19 | |||
| 507.429 | |||
| ^^F | |||
| | |||
|- | |||
| −18 | |||
| 607.038 | |||
| vF# | |||
| | |||
|- | |||
| −17 | |||
| 706.647 | |||
| ^G | |||
| | |||
|- | |- | ||
| −16 | | −16 | ||
| 806.256 | | 806.256 | ||
| | | vvG# | ||
| | | | ||
|- | |- | ||
| Line 25: | Line 95: | ||
| −14 | | −14 | ||
| 1005.474 | | 1005.474 | ||
| | | ^^Bb | ||
| | | | ||
|- | |- | ||
| −13 | | −13 | ||
| 1105.083 | | 1105.083 | ||
| | | vB | ||
| | | | ||
|- | |- | ||
| −12 | | −12 | ||
| 4.692 | | 4.692 | ||
| | | ^C | ||
| | | | ||
|- | |- | ||
| −11 | | −11 | ||
| 104.301 | | 104.301 | ||
| | | vvC# | ||
| | | | ||
|- | |- | ||
| Line 50: | Line 120: | ||
| −9 | | −9 | ||
| 303.519 | | 303.519 | ||
| | | ^^Eb | ||
| | | | ||
|- | |- | ||
| −8 | | −8 | ||
| 403.128 | | 403.128 | ||
| | | vE | ||
| | | | ||
|- | |- | ||
| −7 | | −7 | ||
| 502.737 | | 502.737 | ||
| | | ^F | ||
| | | | ||
|- | |- | ||
| −6 | | −6 | ||
| 602.346 | | 602.346 | ||
| | | vvF# | ||
| | | | ||
|- | |- | ||
| Line 75: | Line 145: | ||
| −4 | | −4 | ||
| 801.564 | | 801.564 | ||
| | | ^^Ab | ||
| | | | ||
|- | |- | ||
| −3 | | −3 | ||
| 901.173 | | 901.173 | ||
| | | vA | ||
| | | | ||
|- | |- | ||
| −2 | | −2 | ||
| 1000.782 | | 1000.782 | ||
| | | ^Bb | ||
| | | | ||
|- | |- | ||
| −1 | | −1 | ||
| 1100.391 | | 1100.391 | ||
| | | vvB | ||
| | | | ||
|- | |- | ||
| Line 100: | Line 170: | ||
| 1 | | 1 | ||
| 99.609 | | 99.609 | ||
| | | ^^Db | ||
| | | | ||
|- | |- | ||
| 2 | | 2 | ||
| 199.218 | | 199.218 | ||
| | | vD | ||
| | | | ||
|- | |- | ||
| 3 | | 3 | ||
| 298.827 | | 298.827 | ||
| | | ^Eb | ||
| | | | ||
|- | |- | ||
| 4 | | 4 | ||
| 398.436 | | 398.436 | ||
| | | vvE | ||
| | | | ||
|- | |- | ||
| Line 125: | Line 195: | ||
| 6 | | 6 | ||
| 597.654 | | 597.654 | ||
| | | ^^Gb | ||
| | | | ||
|- | |- | ||
| 7 | | 7 | ||
| 697.263 | | 697.263 | ||
| | | vG | ||
| | | | ||
|- | |- | ||
| 8 | | 8 | ||
| 796.872 | | 796.872 | ||
| | | ^Ab | ||
| | | | ||
|- | |- | ||
| 9 | | 9 | ||
| 896.481 | | 896.481 | ||
| | | vvA | ||
| | | | ||
|- | |- | ||
| Line 150: | Line 220: | ||
| 11 | | 11 | ||
| 1095.699 | | 1095.699 | ||
| | | ^^Cb | ||
| | | | ||
|- | |- | ||
| 12 | | 12 | ||
| 1195.308 | | 1195.308 | ||
| | | vC | ||
| | | | ||
|- | |- | ||
| 13 | | 13 | ||
| 94.917 | | 94.917 | ||
| | | ^Db | ||
| | | | ||
|- | |- | ||
| 14 | | 14 | ||
| 194.526 | | 194.526 | ||
| | | vvD | ||
| | | | ||
|- | |- | ||
| Line 175: | Line 245: | ||
| 16 | | 16 | ||
| 393.744 | | 393.744 | ||
| ^^Fb | |||
| | | | ||
|- | |||
| 17 | |||
| 493.353 | |||
| vF | |||
| | | | ||
|- | |||
| 18 | |||
| 592.962 | |||
| ^Gb | |||
| | |||
|- | |||
| 19 | |||
| 692.571 | |||
| vvG | |||
| | |||
|- | |||
| 20 | |||
| 792.180 | |||
| Ab | |||
| minor sixth | |||
|- | |||
| 21 | |||
| 891.789 | |||
| ^^Bbb | |||
| | |||
|- | |||
| 22 | |||
| 991.398 | |||
| vBb | |||
| | |||
|- | |||
| 23 | |||
| 1091.007 | |||
| ^Cb | |||
| | |||
|- | |||
| 24 | |||
| 1190.616 | |||
| vvC | |||
| | |||
|- | |||
| 25 | |||
| 90.225 | |||
| Db | |||
| minor second | |||
|- | |||
| 26 | |||
| 189.834 | |||
| ^^Ebb | |||
| | |||
|- | |||
| 27 | |||
| 289.443 | |||
| vEb | |||
| | |||
|- | |||
| 28 | |||
| 389.052 | |||
| ^Fb | |||
| | |||
|- | |||
| 29 | |||
| 488.661 | |||
| vvF | |||
| | |||
|- | |||
| 30 | |||
| 588.270 | |||
| Gb | |||
| diminished fifth | |||
|} | |} | ||
A notable feature of omega-pentacot is the small comma, encountered after 12 steps, which represents one-fifth of a Pythagorean comma (or its equivalence, ''inversed'' diminished second). This makes omega-pentacot scales cluster around [[12edo]]. | |||
== Temperament interpretations == | == Temperament interpretations == | ||