Devadoot: Difference between revisions
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'''Devadoot''' is | '''Devadoot''' is [[magic]] that uses a flattened [[5/4|major third]] as a [[period]], five of which make a tritave ([[3/1]]), and a generator which can equivalently be designated as an [[octave]], a [[3/2|perfect fifth]], or a large quarter tone (i.e., an octave minus three periods). The name was proposed by [[Mason Green]]. | ||
Devadoot is closely related to [[ | Devadoot is closely related to [[41edo]], which has near-just (slightly sharp) tritaves. If the tritaves of 41edo are compressed to be just, then the octaves will be slightly flat (by less than half a cent). However the difference between these tunings is so small as to be practically negligible. | ||
Compared to the | Compared to the more common version of magic, devadoot switches the roles of the generator and period. As such it may be thought of as the magic counterpart of [[angel]], and is named accordingly (Devadoot is the Hindi word for "messenger from God/the gods"; i.e. an angel). The use of a Hindi name is because this scale generates a [[mos]] which is closely related to Magic[22]. Whereas angel is well-suited to Western common practice music, Magic[22] and therefore also devadoot may prove useful for Indian music (see also [[Magic22 as srutis|Magic[22] as srutis]]). | ||
There are 13 steps in a period (i. e. | There are 13 steps in a period (i.e. a major third), and the generator is 2 steps. This generates a large number of different mos scales, most of which are improper. The smallest proper mos scales are those with 1, 2, 6, and 7 notes per period. The last two are by far the most interesting, and they are closely related to Magic[19] and Magic[22] respectively. While they are not octave-repeating, they do have relatively long chains of octaves (five or six of them, respectively) which makes the non-octave-repeating quality less obvious than it otherwise would be. | ||
The | The Devadoot[7] scale derived from 41edo has step pattern 2 2 2 2 2 2 1 (per period). Since octaves are no longer exactly equivalent, we must evaluate the [[Graham complexity]] of the entire [[integer limit|''n''-integer-limit]] [[chord of nature]] (rather than just [[odd limit]]s). The Graham complexity of the complete 10-integer-limit otonality is 4; this means that Devadoot[7] allows for 3 each (up to period equivalency) of the basic "major-like" (otonal) and "minor-like" (utonal) 10-integer-limit chords. Since there are slightly more than three periods in an octave, this actually means that there are around 9 such chords per octave, which allows considerable freedom of modulation. Much like angel, it handles the 10-integer-limit amazingly but does not handle 12-integer-limit harmonies as well. | ||
Straight-fretted devadoot guitars would be a possibility; they would need to be tuned in {{w|Major thirds tuning|all-thirds}} since the period is a major third. | |||
[[Category:41edo]] | [[Category:41edo]] | ||
[[Category: | [[Category:Magic]] | ||