250/243: Difference between revisions
added fact about 250/243 being a chromium period and proposed a new name |
De-bold the neologism. The original names are pretty established and not subject to changes. Section into "temperaments" and "approximation" |
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'''250/243''' is known as the '''porcupine comma''' or the '''maximal diesis'''. Measuring about 49{{cent}}, it is a [[medium comma]]. It is the amount by which two [[10/9|minor whole tones]] exceed a minor third, that is, (10/9)<sup>2</sup>/(6/5). | |||
== Temperaments == | |||
Tempering it out leads to the [[5-limit]] [[porcupine]] temperament. See [[porcupine family]] for the family of rank-2 temperaments where it is tempered out. | |||
== | == Approximation == | ||
If we do not temper out this interval and instead use it as an identity of some sort, it serves as the period in the [[chromium]] temperament, where it is mapped to 1/24th of the octave. Thus [[Eliora]] proposes the name ''chromium quartertone''. | |||
[[Category:Porcupine]] | [[Category:Porcupine]] | ||