Diamond-mos notation: Difference between revisions
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==Accidentals== | ==Accidentals== | ||
[[File:Diamond-mos accidental names table.png|thumb|353x353px|A table of the accidentals in diamond-mos, their text representations, and their spoken names.]] | [[File:Diamond-mos accidental names table.png|thumb|353x353px|A table of the accidentals in diamond-mos, their text representations, and their spoken names.]] | ||
There are three types of accidentals in diamond-mos. There are diatonic accidentals ( | There are three types of accidentals in diamond-mos. There are diatonic accidentals (#, b, …), mos accidentals (&, @, …), and ups and downs (^, v, …). | ||
Diatonic accidentals are what you’d expect. '''#''' raises a note by a diatonic chroma, the difference between the diatonic whole tone and semitone. '''b''' lowers a note by the same amount. '''x''' and '''bb''' are the doublings of those. Half-sharp ('''t''') and half-flat ('''d''') represent changes of half a diatonic chroma, and are only allowed if | Diatonic accidentals are what you’d expect. '''#''' raises a note by a diatonic chroma, the difference between the diatonic whole tone and semitone. '''b''' lowers a note by the same amount. '''x''' and '''bb''' are the doublings of those. Half-sharp ('''t''') and half-flat ('''d''') represent changes of half a diatonic chroma, and are only allowed if #/b represent an even number of edosteps. | ||
Mos accidentals are similar to diatonic accidentals, but for non-diatonic mosses. Mos accidentals are based on the specific mos used. '''&''' (read "am") raises a note by a moschroma, the difference between the large mosstep (L) and the small mosstep (s). '''@''' (read "at") lowers a note by the same amount. '''e''' and '''a''' represent half of | Mos accidentals are similar to diatonic accidentals, but for non-diatonic mosses. Mos accidentals are based on the specific mos used. '''&''' (read "am") raises a note by a moschroma, the difference between the large mosstep (L) and the small mosstep (s). '''@''' (read "at") lowers a note by the same amount. '''e''' and '''a''' represent half of & and @ respectively, and are only allowed if &/@ represent an even number of edosteps. | ||
The third type of accidentals are ups and downs. '''^''' raises by one edostep and '''v''' lowers by one edostep. There are double and triple versions, '''^^'''/'''vv''' and '''^^^'''/'''vvv''', which represent movements of two and three edosteps respectively. Ups and downs can be combined with the other two types to create compound accidentals, such as '''^#''' and '''vv@'''. Note: The ups and downs in diamond-mos don't necessarily follow the same rules as in Kite's original [[Ups and Downs Notation|ups and downs standard]]. | The third type of accidentals are ups and downs. '''^''' raises by one edostep and '''v''' lowers by one edostep. There are double and triple versions, '''^^'''/'''vv''' and '''^^^'''/'''vvv''', which represent movements of two and three edosteps respectively. Ups and downs can be combined with the other two types to create compound accidentals, such as '''^#''' and '''vv@'''. Note: The ups and downs in diamond-mos don't necessarily follow the same rules as in Kite's original [[Ups and Downs Notation|ups and downs standard]]. | ||
The meaning of | The meaning of &/@ accidentals is dependent on the specific mos being used. &/@ have no meaning on the diatonic staff, so are not allowed in that case. Ups and downs can always be used. If the edo has 5L 2s, the meaning of #/b accidentals is fixed, not dependent on any context. However, in a non-diatonic mos context, #/b have no theoretical significance and could potentially be confusing. We heavily discourage #/b in a non-diatonic mos context for that reason. However, using them could be useful in very large edos where you need all the accidental options you can get. | ||
When using 5L 2s in an edo where | When using 5L 2s in an edo where t/d are one edostep, we encourage using t/d instead of ^/v. This is to increase consistency with existing microtonal notation, such as notation for 17edo, 24edo, and 31edo. The same rule does not apply to e/a semi-moschroma accidentals. | ||
A subtle but important feature of the standard is that accidentals are separate from each other and do not stack. '''If a note has an accidental in front, that accidental fully overrides any preceding accidentals.''' For example, if a D with a | A subtle but important feature of the standard is that accidentals are separate from each other and do not stack. '''If a note has an accidental in front, that accidental fully overrides any preceding accidentals.''' For example, if a D with a # is followed by a D with only an ^, the second note is D^, not D^#. | ||
==Note names== | ==Note names== | ||