256/255: Difference between revisions

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'''256/255''', the '''septendecimal kleisma''', '''charsma''', '''diasemisma''' or '''255th subharmonic''' is a [[small comma|small]] [[17-limit]] [[superparticular]] comma about 6.8 [[cent]]s in size. It is the difference between [[16/15]] (classical diatonic semitone) and [[17/16]] (large septendecimal semitone, also called as ''minor diatonic semitone''), and forms the amount by which a stack consisting of [[15/8]] and 17/16 falls short of an [[octave]]. It differs from [[352/351]] (the minthma) by [[936/935]] – an [[unnoticeable comma]] measuring about 1.85 cents.

By tempering it out is defined the '''charsmic temperament''' or '''~~diasemismic~~ temperament''', which enables the [[diasemismic　chords|charsmic chords]].

By tempering it out is defined the '''charsmic temperament''' (full 17-limit rank-6) or '''charic temperament''' (2.3.5.17 subgroup rank-3), which enables the [[diasemismic　chords|charsmic chords]].

== Etymology ==

The name ''diasemisma'' was named by [[User:Xenllium|Xenllium]] in May 2023. It is a contraction of ''diatonic semitone'' into a single word; it is unrelated to the [[diasem]] scale structure. However, ''septendecimal kleisma'' and ''255th subharmonic'' were attested much earlier.

~~The name ''charisma'' for this comma was named by~~ [[User:Godtone|Godtone]] in December 2023, ~~and refers~~ to the comma being a superparticular ratio with the numerator is 2<sup>8</sup> (the number of combinations in a byte, often referred to as a char in programming). Later, this name was revised to ''charsma'' (no-''i'' spelling) by Xenllium in January 2024 for disambiguation (formerly ''charisma'' and ''charismic'' ~~are~~ used for [[Magic family #Horcrux|horcrux extensions]]).

[[User:Godtone|Godtone]] named this comma ''charisma'' in December 2023, referring to the comma being a superparticular ratio with the numerator is 2<sup>8</sup> (the number of combinations in a byte, often referred to as a char in programming). Later, this name was revised to ''charsma'' (no-''i'' spelling) by Xenllium in January 2024 for disambiguation (formerly ''charisma'' and ''charismic'' were used for [[Magic family #Horcrux|horcrux extensions]]).

== See also ==

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 '''256/255''', the '''septendecimal kleisma''', '''charsma''', '''diasemisma''' or '''255th subharmonic''' is a [[small comma|small]] [[17-limit]] [[superparticular]] comma about 6.8 [[cent]]s in size. It is the difference between [[16/15]] (classical diatonic semitone) and [[17/16]] (large septendecimal semitone, also called as ''minor diatonic semitone''), and forms the amount by which a stack consisting of [[15/8]] and 17/16 falls short of an [[octave]]. It differs from [[352/351]] (the minthma) by [[936/935]] – an [[unnoticeable comma]] measuring about 1.85 cents.
-By tempering it out is defined the '''charsmic temperament''' or '''diasemismic temperament''', which enables the [[diasemismic　chords|charsmic chords]].
+By tempering it out is defined the '''charsmic temperament''' (full 17-limit rank-6) or '''charic temperament''' (2.3.5.17 subgroup rank-3), which enables the [[diasemismic　chords|charsmic chords]].
 == Etymology ==
 The name ''diasemisma'' was named by [[User:Xenllium|Xenllium]] in May 2023. It is a contraction of ''diatonic semitone'' into a single word; it is unrelated to the [[diasem]] scale structure. However, ''septendecimal kleisma'' and ''255th subharmonic'' were attested much earlier.
-The name ''charisma'' for this comma was named by [[User:Godtone|Godtone]] in December 2023, and refers to the comma being a superparticular ratio with the numerator is 2<sup>8</sup> (the number of combinations in a byte, often referred to as a char in programming). Later, this name was revised to ''charsma'' (no-''i'' spelling) by Xenllium in January 2024 for disambiguation (formerly ''charisma'' and ''charismic'' are used for [[Magic family #Horcrux|horcrux extensions]]).
+[[User:Godtone|Godtone]] named this comma ''charisma'' in December 2023, referring to the comma being a superparticular ratio with the numerator is 2<sup>8</sup> (the number of combinations in a byte, often referred to as a char in programming). Later, this name was revised to ''charsma'' (no-''i'' spelling) by Xenllium in January 2024 for disambiguation (formerly ''charisma'' and ''charismic'' were used for [[Magic family #Horcrux|horcrux extensions]]).
 == See also ==