Omnidiatonic: Difference between revisions
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'''Omnidiatonic''' (also known as '''interdia''' and '''archylino''') is a 7-note [[Maximum variety| | '''Omnidiatonic''' (also known as '''interdia''' and '''archylino''') is a 7-note [[Maximum variety|maximum-variety-3]] scale with the [[step signature]] 2L 3M 2s. Omnidiatonic is a [[chiral]] scale with LMsMLsM and LMsLMsM variants. [[14edo]] is the first equal division that supports omnidiatonic. The name "omnidiatonic" was given by [[User:CompactStar|CompactStar]] and the name "interdia" was given by [[User:Xenllium|Xenllium]], both of which refer to this scale being intermediate between the [[5L 2s]] diatonic scale and the [[2L 5s]] antidiatonic scale. The name "archylino" was given by [[User:AthiTrydhen|Praveen Venkataramana]], which refers to intervals separated by 64/63, the Archytas comma, being mapped to the same number of scale steps of 2.3.7 JI archylino 1/1 9/8 7/6 4/3 3/2 14/9 7/4 2/1 (MsLMsML). In terms of Greek scales, this can be seen as Archytas' diatonic. | ||
Omnidiatonic can be tuned as a 7-limit JI scale or a tempered version thereof, where L represents 8/7, | Omnidiatonic can be tuned as a 7-limit JI scale or a tempered version thereof, where L represents 8/7, M represents 9/8, and s represents 28/27. | ||
== Modes == | |||
Omnidiatonic has 14 modes total, with 7 LH and 7 RH modes. | |||
{| class="wikitable" | |||
|+Omnidiatonic modes | |||
!Left handed | |||
!Right handed | |||
|- | |||
|LMsMLsM | |||
|LMsLMsM | |||
|- | |||
|LsMLMsM | |||
|LMsMLMs | |||
|- | |||
|MLMsMLs | |||
|MLMsLMs | |||
|- | |||
|MLsMLMs | |||
|MsLMsML | |||
|- | |||
|MsMLsML | |||
|MsMLMsL | |||
|- | |||
|sMLMsML | |||
|sLMsMLM | |||
|- | |||
|sMLsMLM | |||
|sMLMsLM | |||
|} | |||
== Tunings == | == Tunings == | ||
{| class="wikitable" | |||
|+Tuning range of omnidiatonic | |||
! | |||
! Tuning range (in [[octave]]s) | |||
|- | |||
! Outer generator <br>(''G''<sub>1</sub> = L + 2M + s) | |||
| <math>\displaystyle \frac{1}{2} \lt G_\text{1} \lt \frac{3}{5}</math> | |||
|- | |||
! RH inner generator <br>(''G''<sub>2R</sub> = M + s) | |||
| <math>\displaystyle 2 G_\text{1} - 1 \lt G_\text{2R} \lt 4 G_\text{1} - 2 \text{ for }\frac{1}{2} \lt G_\text{1} \le \frac{4}{7}</math> <br><math>\displaystyle 2 G_\text{1} - 1 \lt G_\text{2R} \lt 2 - 3 G_\text{1} \text{ for }\frac{4}{7} \le G_\text{1} \lt \frac{3}{5}</math> | |||
|- | |||
! LH inner generator <br>(''G''<sub>2L</sub> = L + M) | |||
| <math>\displaystyle 2 - 3 G_\text{1} \lt G_\text{2L} \lt 1 - G_\text{1} \text{ for } \frac{1}{2} \lt G_\text{1} \le \frac{4}{7}</math> <br><math>\displaystyle 4 G_\text{1} - 2 \lt G_\text{2L} \lt 1 - G_\text{1} \text{ for }\frac{4}{7} \le G_\text{1} \lt \frac{3}{5}</math> | |||
|- | |||
! Large step <br>(L = 1 - ''G''<sub>1</sub> - ''G''<sub>2R</sub>) | |||
| <math>\displaystyle \frac{1}{7} \lt L \lt \frac{1}{2}</math> | |||
|- | |||
! Middle step <br>(M = 2''G''<sub>1</sub> - 1) | |||
| <math>\displaystyle \frac{1}{5} (1 - 2 L) \lt M \lt L \text{ for } \frac{1}{7} \lt L \le \frac{1}{5}</math> <br><math>\displaystyle \frac{1}{5} (1 - 2 L) \lt M \lt \frac{1}{3} (1 - 2 L) \text{ for } \frac{1}{5} \le L \lt \frac{1}{2}</math> | |||
|- | |||
! Small step <br>(s = 1 - ''G''<sub>1</sub> - ''G''<sub>2L</sub>) | |||
| <math>\displaystyle \frac{1}{2} (1 - 5 L) \lt s \lt \frac{1}{5} (1 - 2 L) \text{ for } \frac{1}{7} \lt L \le \frac{1}{5}</math> <br><math>\displaystyle 0 \lt s \lt \frac{1}{5} (1 - 2 L) \text{ for } \frac{1}{5} \le L \lt \frac{1}{2}</math> | |||
|} | |||
{|class="wikitable" | {|class="wikitable" | ||
|- | |- | ||
!Tuning | !Tuning | ||
!L | !L | ||
! | !M | ||
!s | !s | ||
!Comments | !Comments | ||
Line 41: | Line 94: | ||
|2 | |2 | ||
|1 | |1 | ||
| | | | ||
|- | |- | ||
|rowspan="2"|[[21edo]] | |rowspan="2"|[[21edo]] | ||
Line 52: | Line 105: | ||
|3 | |3 | ||
|1 | |1 | ||
| | |||
|- | |||
|[[22edo]] | |||
|7 | |||
|2 | |||
|1 | |||
|Also has diatonic MOS | |||
|- | |||
|[[23edo]] | |||
|5 | |||
|3 | |||
|2 | |||
| | | | ||
|} | |} | ||
== See also == | |||
* [[Nicetone]] – sister 3L 2M 2s scale | |||
* [[Antinicetone]] – sister 2L 2M 3s scale | |||
* [[5L 2s]] – LM-equalized version of omnidiatonic | |||
** [[5L 2s Muddles]] – other diatonic muddles | |||
* [[2L 5s]] – MS-equalized version of omnidiatonic | |||
* [[2L 3s]] – collapsed version of omnidiatonic | |||
[[Category:Rank-3 scales]] | [[Category:Rank-3 scales]] | ||
[[Category:7-tone scales]] | |||
[[Category:GO scales]] |