540/539: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
| Name = swetisma
| Name = swetisma
| Color name = 1urry-2, lururuyo negative 2nd
| Comma = yes
| Comma = yes
}}
}}
'''540/539''', the '''swetisma''', is a [[comma]] in the [[11-limit]], equal to ([[15/11]])/([[7/6]])<sup>2</sup>, to ([[12/11]])([[15/14]])/([[7/6]]) or to ([[99/98]])/([[121/120]]). Thus, tempering any two of 99/98, 121/120 and 540/539 will result in the third of the three being tempered, resulting in the rank-3 temperament [[Big Brother]]. More generally, tempering 540/539 leads to [[swetismic temperaments]].
'''540/539''', the '''swetisma''', is an [[unnoticeable comma]] in the [[11-limit]], equal to ([[15/11]])/([[7/6]])<sup>2</sup> or to ([[12/11]])([[15/14]])/([[7/6]]). In terms of commas, it is ([[99/98]])/([[121/120]]), ([[225/224]])/([[385/384]]), and ([[243/242]])/([[441/440]]).  
 
== Temperaments ==
[[Tempering out]] any two of 99/98, 121/120 and 540/539 will result in the third of the three being tempered, resulting in the rank-3 temperament [[big brother]]. More generally, tempering out 540/539 leads to [[swetismic temperaments]] and enables [[swetismic chords]].
 
See [[Rank-4 temperament #Swetismic (540/539)]] for the rank-4 swetismic temperament. See [[Swetismic temperaments]] for a collection of rank-3 temperaments where it is tempered out.  


== Etymology ==
== Etymology ==
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== See also ==
== See also ==
* [[Swetismic chords]]
* [[Rank-4 temperament #Swetismic (540/539)]]
* [[Swetismic temperaments]], a collection of rank-3 temperaments where it is tempered out
* [[Unnoticeable comma]]
* [[List of superparticular intervals]]
* [[List of superparticular intervals]]


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[[Category:Swetismic]]
[[Category:Swetismic]]
[[Category:Commas named after music theorists]]