36:45:54:64: Difference between revisions

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-{{Infobox Chord|36:45:54:64|Name=Ptolemaic dominant seventh}}
+{{Infobox Chord|36:45:54:64}}
-{{Nowrap|'''36:45:54:64'''}}, the ''Ptolemaic dominant seventh chord'', is a [[dominant seventh chord]] found on the dominant scale degree (V or {{Frac|3|2}}) of Ptolemy's intense diatonic scale ([[Zarlino]]), perhaps the most common 5-limit diatonic. It combines a [[5/4]] major third with a [[16/9]] Pythagorean minor seventh, creating a [[64/45]] tritone between the two.
+{{Nowrap|'''36:45:54:64'''}} is a [[dominant seventh chord]] found on the {{w|dominant (music)|dominant}} scale degree (V or {{Frac|3|2}}) of Ptolemy's intense diatonic scale ([[Zarlino]]), perhaps the most common 5-limit diatonic. It combines a [[5/4]] major third with a [[16/9]] ([[3-limit]]) minor seventh, creating a [[64/45]] tritone between the two.
+In the [[meantone]] tuning of this chord, the ~16/9 minor seventh is equated with ~[[9/5]], making it equivalent to the meantone tuning of [[20:25:30:36]].
 [[Category:Dominant seventh chords|##]] <!-- 2-digit first number -->