4/3: Difference between revisions

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Xenwolf (talk | contribs)
autopatrolled, Bureaucrats, confirmaccount-notify, Interface administrators, Sysops
8,705 edits
introduced infobox interval
Xenwolf (talk | contribs)
autopatrolled, Bureaucrats, confirmaccount-notify, Interface administrators, Sysops
8,705 edits
fixed monzo
Line 2: Line 2:
| Icon = [[File:perfect_fourth.png|124px]] <small><br/>[[JI glyphs|JI glyph]]</small>
| Icon = [[File:perfect_fourth.png|124px]] <small><br/>[[JI glyphs|JI glyph]]</small>
| Ratio = 4/3
| Ratio = 4/3
| Monzo = 1 -1
| Monzo = 2 -1
| Cents = 498.04500
| Cents = 498.04500
| Name = just perfect fourth
| Name = just perfect fourth

Revision as of 11:20, 22 October 2018

Interval information
Ratio 4/3
Factorization 22 × 3-1
Monzo [2 -1⟩
Size in cents 498.045¢
Name just perfect fourth
FJS name [math]\displaystyle{ \text{P4} }[/math]
Special properties square superparticular,
reduced,
reduced subharmonic
Tenney norm (log2 nd) 3.58496
Weil norm (log2 max(n, d)) 4
Wilson norm (sopfr(nd)) 7

[sound info]
Open this interval in xen-calc

4/3 is the frequency ratio of the just perfect fourth. Its inversion is the perfect fifth, 3/2.

See also Perfect fourth (Wikipedia)
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