1848edo: Difference between revisions
Improve the theory section and general cleanup |
|||
| Line 3: | Line 3: | ||
== Theory == | == Theory == | ||
1848edo is a super strong 11-limit division, having the lowest 11-limit [[Tenney-Euclidean temperament measures #TE simple badness|relative error]] than any division until [[6079edo|6079]]. It tempers out the 11-limit commas [[9801/9800]], 151263/151250, [[1771561/1771470]] and 3294225/3294172. In the 5-limit it is an atomic system, tempering out the [[atom]], {{monzo| 161 -84 -12 }} and also the minortone comma, {{monzo| -16 35 -17 }}. It also tempers out the 7-limit [[landscape comma]], 250047/250000. It is distinctly consistent through the 15-odd-limit, and tempers out the 13-limit commas [[4225/4224]] and [[6656/6655]]. | |||
In the 7-limit, it supports [[domain]] and [[akjayland]]. | In the 7-limit, it supports [[domain]] and [[akjayland]]. | ||
1848 factors as 2 | 1848 factors as 2<sup>3</sup> × 3 × 7 × 11. It is a superabundant number in the no-fives subgroup, that is, if only numbers not divisible by 5 are counted. Its divisors are {{EDOs| 1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 77, 84, 88, 132, 154, 168, 231, 264, 308, 462, 616, 924 }}. | ||
=== Prime harmonics === | === Prime harmonics === | ||
{{Harmonics in equal|1848}} | {{Harmonics in equal|1848|columns=11}} | ||
== Regular temperament properties == | == Regular temperament properties == | ||
{| class="wikitable center-4 center-5 center-6" | {| class="wikitable center-4 center-5 center-6" | ||
! rowspan="2" |Subgroup | ! rowspan="2" | [[Subgroup]] | ||
! rowspan="2" |[[Comma list]] | ! rowspan="2" | [[Comma list|Comma List]] | ||
! rowspan="2" |[[Mapping]] | ! rowspan="2" | [[Mapping]] | ||
! rowspan="2" |Optimal | ! rowspan="2" | Optimal<br>8ve Stretch (¢) | ||
8ve | ! colspan="2" | Tuning Error | ||
! colspan="2" |Tuning | |||
|- | |- | ||
![[TE error|Absolute]] (¢) | ! [[TE error|Absolute]] (¢) | ||
![[TE simple badness|Relative]] (%) | ! [[TE simple badness|Relative]] (%) | ||
|- | |- | ||
|2.3 | | 2.3 | ||
|{{ | | {{monzo| -2929 1848 }} | ||
|[{{val|1848 2929}}] | | [{{val| 1848 2929 }}] | ||
|0.002192 | | 0.002192 | ||
|0.002192 | | 0.002192 | ||
|0.338 | | 0.338 | ||
|- | |- | ||
|2.3.5 | | 2.3.5 | ||
|{{ | | {{monzo| -16 35 -17 }}, {{monzo| 129 -14 -46 }} | ||
|[{{val|1848 2929 4291}}] | | [{{val| 1848 2929 4291 }}] | ||
| | | -0.005705 | ||
|0.011311 | | 0.011311 | ||
|1.742 | | 1.742 | ||
|- | |- | ||
|2.3.5.7 | | 2.3.5.7 | ||
|250047/250000, 645700815/645657712, {{ | | 250047/250000, 645700815/645657712, {{monzo| 43 -1 -13 -4 }} | ||
|[{{val|1848 2929 4291 5188}}] | | [{{val| 1848 2929 4291 5188 }}] | ||
| -0.004748 | | -0.004748 | ||
|0.009935 | | 0.009935 | ||
|1.530 | | 1.530 | ||
|- | |- | ||
|2.3.5.7.11 | |2.3.5.7.11 | ||
|9801/9800, 250047/250000, 14348907/14348180, 67110351/67108864 | | 9801/9800, 250047/250000, 14348907/14348180, 67110351/67108864 | ||
|[{{val|1848 2929 4291 5188 6393}}] | | [{{val|1848 2929 4291 5188 6393}}] | ||
| | | -0.002686 | ||
|0.009797 | | 0.009797 | ||
|1.509 | | 1.509 | ||
|- | |- | ||
|2.3.5.7.11.13 | | 2.3.5.7.11.13 | ||
|4225/4224, 9801/9800, 67392/67375, 250047/250000, 4429568/4428675 | | 4225/4224, 9801/9800, 67392/67375, 250047/250000, 4429568/4428675 | ||
|[{{val|1848 2929 4291 5188 6393 6838}}] | | [{{val|1848 2929 4291 5188 6393 6838}}] | ||
|0.009828 | | 0.009828 | ||
|0.029378 | | 0.029378 | ||
|4.524 | | 4.524 | ||
|} | |} | ||
=== Rank-2 temperaments === | === Rank-2 temperaments === | ||
{| class="wikitable center-all left-5" | {| class="wikitable center-all left-5" | ||
!Periods | ! Periods<br>per 8ve | ||
per | ! Generator<br>(Reduced) | ||
!Generator | ! Cents<br>(Reduced) | ||
(Reduced) | ! Associated<br>Ratio | ||
!Cents | ! Temperaments | ||
(Reduced) | |||
!Associated | |||
Ratio | |||
!Temperaments | |||
|- | |- | ||
|3 | | 3 | ||
|281\1848 | | 281\1848 | ||
|182.467 | | 182.467 | ||
|10/9 | | 10/9 | ||
|[[Domain]] | | [[Domain]] | ||
|- | |- | ||
|12 | | 12 | ||
|3\1848 | | 3\1848 | ||
|1.948 | | 1.948 | ||
|32805/32768 | | 32805/32768 | ||
|[[Atomic]] | | [[Atomic]] | ||
|- | |- | ||
|21 | | 21 | ||
|901\1848<br>(21\1848) | | 901\1848<br>(21\1848) | ||
|585.065<br>(13.636) | | 585.065<br>(13.636) | ||
|91875/65536<br>(126/125) | | 91875/65536<br>(126/125) | ||
|[[Akjayland]] | | [[Akjayland]] | ||
|- | |- | ||
|44 | |44 | ||
|767\1848<br>(11\1848) | | 767\1848<br>(11\1848) | ||
|498.052<br>(7.143) | | 498.052<br>(7.143) | ||
|4/3<br>(?) | | 4/3<br>(?) | ||
|[[Ruthenium]] | | [[Ruthenium]] | ||
|- | |- | ||
|56 | | 56 | ||
|767\1848<br>(21\1848) | | 767\1848<br>(21\1848) | ||
|498.052<br>(13.636) | | 498.052<br>(13.636) | ||
|4/3<br>(126/125) | | 4/3<br>(126/125) | ||
|[[Barium]] | | [[Barium]] | ||
|}<!-- 4-digit number --> | |} | ||
[[Category:Equal divisions of the octave|####]] <!-- 4-digit number --> | |||
[[Category:Akjayland]] | [[Category:Akjayland]] | ||
[[Category:Atomic]] | [[Category:Atomic]] | ||