128/81: Difference between revisions

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-'''128/81'''
+{{Infobox Interval
-|7 -4&gt;
+| Name = Pythagorean minor sixth
+| Color name = sw6, sawa 6th
+| Sound = jid_128_81_pluck_adu_dr220.mp3
+}}
-.1800 cents
+'''128/81''' is the '''Pythagorean minor sixth''', created by stacking four instances of [[4/3]] and [[Octave reduction|octave-reducing]]. In contrast to the more typical [[8/5]]&mdash;with which it is conflated in [[meantone]]&mdash;this interval has a [[harmonic entropy]] level roughly on par with that of [[12/11]]. Thus, some would argue that it is functionally an imperfect dissonance.
-[[File:jid_128_81_pluck_adu_dr220.mp3]] [[:File:jid_128_81_pluck_adu_dr220.mp3|sound sample]]
+== See also ==
+* [[81/64]] &ndash; Its [[octave complement]]
+* [[Gallery of just intervals]]
+* [[Pythagorean tuning]]
-/81 is the Pythagorean minor sixth, at -4 steps on the chain of fifths.  Its inversion is [[81/64|81/64]].
+[[Category:Sixth]]
-[[Category:todo:expand]]
+[[Category:Minor sixth]]