4/1: Difference between revisions

@@ Line 1: / Line 1: @@
 {{Infobox Interval
-| Ratio = 4/1
+| Name = 4th harmonic, double octave, perfect fifteenth, tetrave, quadruple
-| Monzo = 2
-| Cents = 2400.00000
-| Name = 4th harmonic, <br>tetrave, <br>double octave
 | Color name = wa 15th
-| FJS name = P15
 | Sound = jid_4_1_pluck_adu_dr110.mp3
 }}
+{{Wikipedia| Fifteenth }}
-'''4/1''' is the 4th [[harmonic]], or the '''tetrave'''; two octaves: ([[2/1]])<sup>2</sup>.
+'''4/1''', the '''4th harmonic''', '''double octave''', '''perfect fifteenth''', '''tetrave''' or '''quadruple''', is the [[harmonic]] past [[3/1]] and before [[5/1]]. It is the first composite harmonic, equal to a stack of two [[octave]]s: ([[2/1]])<sup>2</sup>.
+It can act as the [[interval of equivalence]] in temperaments that omit every other octave, such as [[meansquared]].
 == See also ==
-* [[Ed4]] – Equal divisions of the 4th harmonic
+* [[Ed4]] – equal divisions of the 4th harmonic
-[[Category:2-limit]]
+[[Category:Taxicab-2 intervals]]
-[[Category:Harmonics]]