4/1: Difference between revisions

Arseniiv (talk | contribs)
m infoboxified; please check that color name is wa 15th (I added it on the fly)
Note compositeness
 
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{{Infobox Interval
{{Infobox Interval
| JI glyph =
| Name = 4th harmonic, double octave, perfect fifteenth, tetrave, quadruple
| Ratio = 4/1
| Monzo = 2
| Cents = 2400.00000
| Name = 4th harmonic
| Color name = wa 15th
| Color name = wa 15th
| FJS name =
| Sound = jid_4_1_pluck_adu_dr110.mp3
| Sound = jid_4_1_pluck_adu_dr110.mp3
}}
}}
{{Wikipedia| Fifteenth }}


'''4/1''' is the 4th harmonic; 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>.


[[Category:Interval]]
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
 
[[Category:Taxicab-2 intervals]]
Retrieved from "https://en.xen.wiki/w/4/1"