12:14:18:21: Difference between revisions

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~~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 1-7/6-3/2-7/4~~, 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.~~

[[~~Category~~:~~chord~~]]

'''12:14:18:21''', the ''subminor seventh chord'' or ''septimal minor seventh chord'', is an [[anomalous saturated suspension]] in the [[9-odd-limit]].

[[~~Category~~:~~dyadic~~]]

[[Category:ji]]

[[Category:~~tetrad~~]]

{| class="wikitable center-all" style="column-width:10em"

! Ratio

! [[Unison|1/1]] || [[7/6]] || [[3/2]] || [[7/4]]

|-

! [[Cent]]s

| 0.00 || 266.87 || 701.96 || 968.83

|-

! Sound <br> <small>[[:File:Swiss tetrad.mp3|[info]]]</small>

| colspan="4" | [[File:Swiss tetrad.mp3]]

|}

{{Todo|research|inline=1|text=This chord may be closely connected to 7-limit interpretations of the Blues scale.}}

== See also ==

* [[14:18:21:24]]

[[Category:Listen]]

[[Category:Minor seventh chords|##]]

@@ Line 1: / Line 1: @@
-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 1-7/6-3/2-7/4, 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.
+{{Infobox Chord|ColorName=zo-7 or z7}}
-[[Category:chord]]
+'''12:14:18:21''', the ''subminor seventh chord'' or ''septimal minor seventh chord'', is an [[anomalous saturated suspension]] in the [[9-odd-limit]].
-[[Category:dyadic]]
-[[Category:ji]]
+<!-- Note: This was at one point labeled a "Swiss tetrad", seemingly due to a mistaken identification of the "Swiss sixth chord". [[User:Bcmills]] doesn't see how it would actually relate to the Swiss sixth, which can be represented in 5-limit JI as [[256:320:375:450]] and seems closer to a dominant seventh than a subminor one. -->
-[[Category:tetrad]]
+{| class="wikitable center-all" style="column-width:10em"
+! Ratio
+! [[Unison|1/1]] || [[7/6]] || [[3/2]] || [[7/4]]
+|-
+! [[Cent]]s
+| 0.00 || 266.87 || 701.96 || 968.83
+|-
+! Sound <br> <small>[[:File:Swiss tetrad.mp3|[info]]]</small>
+| colspan="4" | [[File:Swiss tetrad.mp3]]
+|}
+{{Todo|research|inline=1|text=This chord may be closely connected to 7-limit interpretations of the Blues scale.}}
+== See also ==
+* [[14:18:21:24]]
+[[Category:Listen]]
+[[Category:Minor seventh chords|##]]