12:14:18:21: Difference between revisions

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 {{Infobox Chord|12:14:18:21|Name=Swiss tetrad}}
-The '''swiss tetrad''' is a just 7-prime-limit, 9-odd-limit chord which is an ASS, or [[Dyadic chord#Anomalous Saturated Suspensions|anomalous saturated suspension]]. In close position, it is [[unison|1]]-[[7/6]]-[[3/2]]-[[7/4]] (12:14:18:21), with steps 7/6-9/7-7/6-8/7. Tempered versions of it have been called "subminor seventh chords" or "swiss sixth chords", so "swiss tetrad" splits the difference.
+The '''swiss tetrad''' is a just 7-prime-limit, 9-odd-limit chord which is an [[anomalous saturated suspension]]. In close position, it is [[unison|1]]-[[7/6]]-[[3/2]]-[[7/4]] (12:14:18:21), with steps 7/6-9/7-7/6-8/7. Tempered versions of it have been called "subminor seventh chords" or "swiss sixth chords", so "swiss tetrad" splits the difference.
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