4/3: Difference between revisions

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{| class="wikitable"
{{Infobox Interval
|-
| Icon = [[File:perfect_fourth.png|124px]] <small><br/>[[JI glyphs|JI glyph]]</small>
| | [[File:perfect_fourth.png|alt=perfect fourth.png|105x112px|perfect fourth.png]]
| Ratio = 4/3
|-
| Monzo = 1 -1
| | JI Glyph of 4/3
| Cents = 498.04500
|}
| Name = just perfect fourth
| Sound = jid_4_3_pluck_adu_dr220.mp3
| Color name =
}}


'''4/3'''
'''4/3''' is the [[frequency ratio]] of the just perfect fourth. Its inversion is the perfect fifth, [[3/2]].
|2 -1&gt;


498.04500 cents
:''See also [http://en.wikipedia.org/wiki/Perfect_fourth Perfect fourth (Wikipedia)]''
 
[[File:jid_4_3_pluck_adu_dr220.mp3]] [[:File:jid_4_3_pluck_adu_dr220.mp3|sound sample]]
 
4:3 is the frequency ratio of the just "perfect fourth". Its inversion is the perfect fifth, [[3/2|3/2]].
 
[http://en.wikipedia.org/wiki/Perfect_fourth Perfect fourth (Wikipedia)]


[[Category:3-limit]]
[[Category:3-limit]]

Revision as of 10:17, 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)