21/20: Difference between revisions

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| Monzo = -2 1 -1 1
| Monzo = -2 1 -1 1
| Cents = 84.4672
| Cents = 84.4672
| Name = minor semitone /<br>large septimal chromatic semitone /<br> septimal major chroma
| Name = minor semitone, <br>large septimal chromatic semitone, <br>large septimal chroma
| Color name = zg2, zogu 2nd
| Color name = zg2, zogu 2nd
| FJS name = m2<sup>7</sup><sub>5</sub>
| Sound = jid_21_20_pluck_adu_dr220.mp3
| Sound = jid_21_20_pluck_adu_dr220.mp3
}}
}}


A small semitone of about 85 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.
'''21/20''' is a small semitone of about 85 cents. It 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]
== See also ==
* [[40/21]] – its [[octave complement]]
* [[10/7]] – its [[fifth complement]]
* [[List of superparticular intervals]]
* [[Gallery of just intervals]]
* [[Wikipedia:Septimal chromatic semitone|Septimal chromatic semitone - Wikipedia]]


[[Category:7-limit]]
[[Category:7-limit]]
[[Category:Interval]]
[[Category:Interval]]
[[Category:Superparticular]]
[[Category:Ratio]]
[[Category:Second]]
[[Category:Semitone]]
[[Category:Semitone]]
[[Category:Superparticular]]
 
[[Category:todo:expand]]
[[Category:todo:expand]]

Revision as of 09:27, 15 October 2020

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,
large septimal chroma
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

21/20 is a small semitone of about 85 cents. It 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.

See also