400/399: Difference between revisions
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'''400/399''', the '''devichroma''' is a [[19-limit]] (also 2.3.5.7.19 [[subgroup]]) [[superparticular]] [[comma]] of about 4.33 [[cent]]s. It is the difference between undevicesimal chroma, [[20/19]] and large septimal chroma, [[21/20]]. By tempering it out is defined the '''devichromic temperament''', which enables the [[devichromic chords]]. | '''400/399''', the '''devichroma''' is a [[19-limit]] (also 2.3.5.7.19 [[subgroup]]) [[superparticular]] [[comma]] of about 4.33 [[cent]]s. It is the difference between undevicesimal chroma, [[20/19]] and large septimal chroma, [[21/20]], between the quasi-tempered major third [[63/50]] and Boethius' major third [[24/19]], and between the subfourths [[21/16]] and [[25/19]]. By tempering it out is defined the '''devichromic temperament''', which enables the [[devichromic chords]]. | ||
== Etymology == | == Etymology == | ||
Latest revision as of 19:51, 22 June 2026
| Interval information |
nuruyoyo negative 2nd,
Nuruyoyo comma
reduced
400/399, the devichroma is a 19-limit (also 2.3.5.7.19 subgroup) superparticular comma of about 4.33 cents. It is the difference between undevicesimal chroma, 20/19 and large septimal chroma, 21/20, between the quasi-tempered major third 63/50 and Boethius' major third 24/19, and between the subfourths 21/16 and 25/19. By tempering it out is defined the devichromic temperament, which enables the devichromic chords.
Etymology
The name devichroma was named by Xenllium in 2023. It is a contraction of undevicesimal chroma into a single word.