21/20: Difference between revisions

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'''21/20'''
{{Infobox Interval
|-2 1 -1 1>
| Icon =
| Ratio = 21/20
| Monzo = -2 1 -1 1
| Cents = 84.4672
| Name = minor semitone, <br/>large septimal chromatic semitone
| Color name = zg2, zogu 2nd
| Sound = jid_21_20_pluck_adu_dr220.mp3
}}


84.4672 cents
A small semitone, 21/20 may be found in 7-limit just intonation as, for example, the difference between 8/7 and 6/5, or between 5/3 and 7/4.
 
[[File:jid_21_20_pluck_adu_dr220.mp3]] [[:File:jid_21_20_pluck_adu_dr220.mp3|sound sample]]
 
A small semitone of about 84.5 cents, 21/20 may be found in 7-limit just intonation as, for example, the difference between 8/7 and 6/5, or between 5/3 and 7/4.


[http://en.wikipedia.org/wiki/Septimal_chromatic_semitone http://en.wikipedia.org/wiki/Septimal_chromatic_semitone]
[http://en.wikipedia.org/wiki/Septimal_chromatic_semitone http://en.wikipedia.org/wiki/Septimal_chromatic_semitone]

Revision as of 04:21, 23 October 2018

Interval information
Ratio 21/20
Factorization 2-2 × 3 × 5-1 × 7
Monzo [-2 1 -1 1⟩
Size in cents 84.46719¢
Names minor semitone,
large septimal chromatic semitone
Color name zg2, zogu 2nd
FJS name [math]\displaystyle{ \text{m2}^{7}_{5} }[/math]
Special properties superparticular,
reduced
Tenney height (log2 nd) 8.71425
Weil height (log2 max(n, d)) 8.78463
Wilson height (sopfr(nd)) 19

[sound info]
Open this interval in xen-calc

A small semitone, 21/20 may be found in 7-limit just intonation as, for example, the difference between 8/7 and 6/5, or between 5/3 and 7/4.

http://en.wikipedia.org/wiki/Septimal_chromatic_semitone

Retrieved from "https://en.xen.wiki/index.php?title=21/20&oldid=37614"