28/27: Difference between revisions
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{{Infobox Interval | {{Infobox Interval | ||
| Ratio = 28/27 | | Ratio = 28/27 | ||
| Monzo = 2 -3 0 1 | | Monzo = 2 -3 0 1 | ||
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| Sound = jid_28_27_pluck_adu_dr220.mp3 | | Sound = jid_28_27_pluck_adu_dr220.mp3 | ||
}} | }} | ||
{{Wikipedia| Septimal third tone }} | |||
The [[superparticular]] interval '''28/27''', '''septimal third-tone''' has the seventh triangular number as a numerator and is the difference between [[15/14]] and [[10/9]], [[9/8]] and [[7/6]], [[9/7]] and [[4/3]], [[3/2]] and [[14/9]], [[12/7]] and [[16/9]], and [[9/5]] and [[28/15]]. | The [[superparticular]] interval '''28/27''', '''septimal third-tone''' has the seventh triangular number as a numerator and is the difference between [[15/14]] and [[10/9]], [[9/8]] and [[7/6]], [[9/7]] and [[4/3]], [[3/2]] and [[14/9]], [[12/7]] and [[16/9]], and [[9/5]] and [[28/15]]. | ||
It is very accurately approximated by [[19edo | It is very accurately approximated by [[19edo]] (1\19), and hence the [[enneadecal]] temperament. | ||
== Terminology == | == Terminology == | ||
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* [[Trienstonic clan]], where it is tempered out | * [[Trienstonic clan]], where it is tempered out | ||
* [[Trienstonisma]], the difference by which a stack of five 28/27s falls short of [[6/5]] | * [[Trienstonisma]], the difference by which a stack of five 28/27s falls short of [[6/5]] | ||
[[Category:7-limit]] | [[Category:7-limit]] | ||
[[Category:Superparticular]] | [[Category:Superparticular]] | ||
[[Category:Second]] | [[Category:Second]] | ||
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[[Category:Medium comma]] | [[Category:Medium comma]] | ||
[[Category:Trienstonic]] | [[Category:Trienstonic]] | ||
[[Category:Pages with internal sound examples]] | |||