4/1: Difference between revisions
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{{Wikipedia| Fifteenth }} | {{Wikipedia| Fifteenth }} | ||
'''4/1''', the '''4th harmonic''', '''double octave''','''perfect fifteenth''', '''tetrave''' or '''quadruple''', is the [[harmonic]] past [[3/1]] and before [[5/1]]. It is equal to a stack of two [[octave]]s: ([[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]]. | It can act as the [[interval of equivalence]] in temperaments that omit every other octave, such as [[meansquared]]. | ||
Latest revision as of 10:45, 2 April 2025
| Interval information |
double octave,
perfect fifteenth,
tetrave,
quadruple
highly composite harmonic
[sound info]
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 octaves: (2/1)2.
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