715/714: Difference between revisions
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'''715/714''', the '''september comma''' or '''septembrisma''' is a [[17-limit]] [[unnoticeable comma|unnoticeable]] [[superparticular]] comma with a size of approximately 2.42 [[cent]]s. It is also described as the ''septendecimal bridge comma''. | '''715/714''', the '''september comma''' or '''septembrisma''' is a [[17-limit]] [[unnoticeable comma|unnoticeable]] [[superparticular]] comma with a size of approximately 2.42 [[cent]]s. It is also described as the ''septendecimal bridge comma''. It is the gap between: | ||
* the subfourths [[17/13]] and [[55/42]] | |||
* the supraminor sixths [[21/13]] and [[55/34]] | |||
* the semitones [[68/65]] and [[22/21]]. | |||
== Commatic relations == | == Commatic relations == | ||
This comma | This comma appears as the difference between the following superparticular pairs: | ||
* [[120/119]] and [[144/143]] | * [[120/119]] and [[144/143]] | ||
* [[154/153]] and [[196/195]] | * [[154/153]] and [[196/195]] | ||