Maqam variations of MOS: Difference between revisions
Created page with ": ''This page assumes that the reader is familiar with TAMNAMS mos interval and step ratio names.'' Given a xL ys mos scale pattern, and also with the difference between..." |
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Given a xL ys mos scale pattern, and also with the difference between L and s being an even number, it is possible to apply [[neutral and interordinal k-mossteps]] through methodology and notation of [[Arabic, Turkish, Persian|Middle Eastern]] music. Such phenomena produce some rather unique scales. | Given a xL ys mos scale pattern, and also with the difference between L and s being an even number, it is possible to apply [[neutral and interordinal k-mossteps]] through methodology and notation of [[Arabic, Turkish, Persian|Middle Eastern]] music. Such phenomena produce some rather unique scales. | ||
Letter M is used to denote a step halfway between L and s steps, A stands for "augmented", which is widening an individual step by a chroma (L - s). | |||
== Implementation == | == Implementation == | ||
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In the diatonic scale, [[17edo]] and [[24edo]] are the smallest edos supporting level 1 maqam. Likewise, the smallest type of mos which can support maqam variations are hard (3:1) and basic pattern embedded in edo twice the size (4:2). | In the diatonic scale, [[17edo]] and [[24edo]] are the smallest edos supporting level 1 maqam. Likewise, the smallest type of mos which can support maqam variations are hard (3:1) and basic pattern embedded in edo twice the size (4:2). | ||
=== | === Ajnas === | ||
The beginning of one jins is ending of another (known as ghammaz), and it's a point where modulation occurs usually. As such, these notes are unchaged from the original mos pattern. | |||
The three most common ajnas - hijaz, bayati, and rast, are based on their diatonic counterpart in pattern in the basic mos case, - sAs, MML, and LMM respectively. | |||
In case where the mos is basic, variations derived with jins hijaz are entirely contained within the original temperament and do not require equal tuning twice the size, as L = s, which means A = L + (L - s) = L + s. | |||
This is a hardness 2:1 variation in [[44edo]], which doubles [[22edo]]. | === 13-tone orwell example === | ||
{{Main|Orwell/Eliora's Approach}} | |||
Orwell[13], which amounts to [[9L 4s]], is an interesting case, as it has a subminor third as a generator and also it features 4 notes inclusive from generator to generator, meaning that each ghammaz of every jins there is one generator above the other, making it perfect for such variations. | |||
This is a hardness 2:1 variation in [[44edo]], which doubles [[22edo]]. Since we have a basic mos, the middle step is 3 steps. | |||
Following scales were designated by Eliora and are based on the LLsLLsLLsLLLs mode of Orwell[13] in 22edo. | |||
{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
Maqam variations upon Orwell[13] in 44edo | |||
! | ! | ||
!Jins | !Jins style | ||
!44edo | !44edo | ||
|- | |||
|''Original scale'' | |||
| - | |||
|0-4-8-10-14-18-20-24-28-30-34-38-40-44 | |||
|- | |- | ||
|Maqam Eurasia | |Maqam Eurasia | ||
| | |Hijaz | ||
|0- | |0-2-8-10-12-18-20-22-28-30-32-38-40-44 | ||
|- | |- | ||
|Maqam Oceania | |Maqam Oceania | ||
| | |Bayati | ||
|0- | |0-3-6-10-13-16-20-23-26-30-33-36-40-44 | ||
|- | |- | ||
|Maqam Eastasia | |Maqam Eastasia | ||
| | |Rast | ||
|0-4- | |0-4-7-10-14-17-20-24-27-30-34-37-40-44 | ||
|} | |} | ||
It is worth noting that Maqam Oceania and Maqam Eastasia are non-MOS variations of [[5L 8s|p-chro oneirotonic]], where steps are rearranged. | |||
[[Category:Method]] | [[Category:Method]] | ||
[[Category:Maqam]] | [[Category:Maqam]] |