205edo: Difference between revisions
+more chords and move the factorization properties below |
Cleanup and update |
||
| Line 1: | Line 1: | ||
{{Infobox ET}} | {{Infobox ET}} | ||
{{EDO intro|205}} | |||
== Theory == | == Theory == | ||
| Line 19: | Line 19: | ||
The 119\205 meantone fifth is extremely close to the 1/4-comma fifth, being only 0.007 cents sharp of it. Moreover the steps are half a cent flat of 1/4 of a syntonic comma. This makes the Tonal Plexus keyboard potentially of use in implementing [[Wikipedia: Nicola Vicentino|Nicola Vicentino]]'s [http://www.tonalsoft.com/monzo/vicentino/vicentino.aspx adaptive-JI scheme of 1555]. It also means that authentic 1/4-comma meantone tuning is, for practical purposes, available in 205 and allows for historically authentic performances of 1/4-comma music on the historically newfangled Tonal Plexus. | The 119\205 meantone fifth is extremely close to the 1/4-comma fifth, being only 0.007 cents sharp of it. Moreover the steps are half a cent flat of 1/4 of a syntonic comma. This makes the Tonal Plexus keyboard potentially of use in implementing [[Wikipedia: Nicola Vicentino|Nicola Vicentino]]'s [http://www.tonalsoft.com/monzo/vicentino/vicentino.aspx adaptive-JI scheme of 1555]. It also means that authentic 1/4-comma meantone tuning is, for practical purposes, available in 205 and allows for historically authentic performances of 1/4-comma music on the historically newfangled Tonal Plexus. | ||
=== | === Divisors === | ||
205 factors into primes as 5 × 41, a fact some advocates of the division make use of; it is also [[2460edo|2460/12]], so that a single step is precisely 12 [[mina]]s. | 205 factors into primes as 5 × 41, a fact some advocates of the division make use of; it is also [[2460edo|2460/12]], so that a single step is precisely 12 [[mina]]s. | ||
== 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]] | ||
! rowspan="2" | [[Mapping]] | ! rowspan="2" | [[Mapping]] | ||
! rowspan="2" | Optimal<br>8ve | ! rowspan="2" | Optimal<br>8ve Stretch (¢) | ||
! colspan="2" | Tuning | ! colspan="2" | Tuning Error | ||
|- | |- | ||
! [[TE error|Absolute]] (¢) | ! [[TE error|Absolute]] (¢) | ||
| Line 52: | Line 52: | ||
{| class="wikitable center-all left-5" | {| class="wikitable center-all left-5" | ||
|+Table of rank-2 temperaments by generator | |+Table of rank-2 temperaments by generator | ||
! Periods<br>per | ! Periods<br>per 8ve | ||
! Generator<br>( | ! Generator<br>(Reduced) | ||
! Cents<br>( | ! Cents<br>(Reduced) | ||
! Associated<br> | ! Associated<br>Ratio | ||
! Temperaments | ! Temperaments | ||
|- | |- | ||
| Line 92: | Line 92: | ||
| 386.341<br>(5.85) | | 386.341<br>(5.85) | ||
| 5/4<br>(32805/32768) | | 5/4<br>(32805/32768) | ||
| [[ | | [[Countercomp]] | ||
|} | |} | ||
== Scales == | == Scales == | ||
=== Quanic (24\205) | === Quanic (24\205) mos === | ||
; 17-note | |||
11 13 11 13 11 13 11 13 11 13 11 13 11 13 11 13 13 | : 11 13 11 13 11 13 11 13 11 13 11 13 11 13 11 13 13 | ||
; 26-note | |||
: 11 11 2 11 11 2 11 11 2 11 11 2 11 11 2 11 11 2 11 11 2 11 11 2 11 2 | |||
=== | === Amity (58\205) mos === | ||
11 | ; 11-note | ||
: 27 27 4 27 27 4 27 27 4 27 4 | |||
; 18-note | |||
: 23 4 23 4 4 23 4 23 4 4 23 4 23 4 4 23 4 4 | |||
; 25-note | |||
: 19 4 4 19 4 4 4 19 4 4 19 4 4 4 19 4 4 19 4 4 4 19 4 4 4 | |||
=== | === Hemithirds (33\205) mos === | ||
; 13-note | |||
: 26 7 26 7 26 7 26 7 26 7 26 7 7 | |||
; 19-note | |||
: 19 7 7 19 7 7 19 7 7 19 7 7 19 7 7 19 7 7 7 | |||
; 25-note | |||
: 12 7 7 7 12 7 7 7 12 7 7 7 12 7 7 7 12 7 7 7 12 7 7 7 7 | |||
; 31-notes | |||
: 5 7 7 7 7 5 7 7 7 7 5 7 7 7 7 5 7 7 7 7 5 7 7 7 7 5 7 7 7 7 7 | |||
=== | === Meantone (119\205) mos === | ||
; 12-note | |||
: 13 20 13 20 13 20 20 13 20 13 20 20 | |||
; 19-note | |||
: 13 13 7 13 13 7 13 13 7 13 7 13 13 7 13 13 7 13 7 | |||
; 31-note | |||
: 6 7 6 7 7 6 7 6 7 7 6 7 6 7 7 6 7 7 6 7 6 7 7 6 7 6 7 7 6 7 7 | |||
=== | === Myna (53\205) mos === | ||
23 4 | ; 11-note | ||
: 7 7 39 7 7 39 7 7 39 7 39 | |||
; 15-note | |||
: 7 7 7 32 7 7 7 32 7 7 7 32 7 7 32 | |||
; 19-note | |||
: 7 7 7 7 25 7 7 7 7 25 7 7 7 7 25 7 7 7 25 | |||
; 23-note | |||
: 7 7 7 7 7 18 7 7 7 7 7 18 7 7 7 7 7 18 7 7 7 7 18 | |||
; 27-note | |||
: 7 7 7 7 7 7 11 7 7 7 7 7 7 11 7 7 7 7 7 7 11 7 7 7 7 7 11 | |||
; 31-note | |||
: 7 7 7 7 7 7 7 4 7 7 7 7 7 7 7 4 7 7 7 7 7 7 7 4 7 7 7 7 7 7 4 | |||
=== Porcupine (28\205) mos === | |||
; 15-note | |||
: 19 9 19 9 19 9 19 9 19 9 19 9 19 9 9 | |||
; 22-note | |||
: 10 9 9 10 9 9 10 9 9 10 9 9 10 9 9 10 9 9 10 9 9 9 | |||
; 29-note | |||
: 1 9 9 9 1 9 9 9 1 9 9 9 1 9 9 9 1 9 9 9 1 9 9 9 1 9 9 9 9 | |||
=== Porcupine (28\205) | |||
19 9 19 9 19 9 19 9 19 9 19 9 19 9 9 | |||
10 9 9 10 9 9 10 9 9 10 9 9 10 9 9 10 9 9 10 9 9 9 | |||
1 9 9 9 1 9 9 9 1 9 9 9 1 9 9 9 1 9 9 9 1 9 9 9 1 9 9 9 9 | |||
[[Category:Equal divisions of the octave|###]] <!-- 3-digit number --> | [[Category:Equal divisions of the octave|###]] <!-- 3-digit number --> | ||