21/19: Difference between revisions

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'''21/19''' is the '''large neutral undevicesimal second'''. Its [[octave complement]] is the minor neutral undevicesimal seventh [[38/21]].
'''21/19''' is the '''hendrix second''', also known as the '''large undevicesimal neutral second'''. It falls short of the [[9/8|Pythagorean major second (9/8)]] by a [[57/56|hendrix comma (57/56)]].  


== See also ==
== See also ==
* [[38/21]] – its [[octave complement]]
* [[38/21]] – its [[octave complement]]
* [[19/14]] – its [[fifth complement]]
* [[Gallery of just intervals]]
* [[Gallery of just intervals]]



Revision as of 07:42, 4 January 2024

Interval information
Ratio 21/19
Factorization 3 × 7 × 19-1
Monzo [0 1 0 1 0 0 0 -1
Size in cents 173.2679¢
Name large neutral undevicesimal second
Color name 19uz2, nuzo 2nd
FJS name [math]\displaystyle{ \text{M2}^{7}_{19} }[/math]
Special properties reduced
Tenney norm (log2 nd) 8.64024
Weil norm (log2 max(n, d)) 8.78463
Wilson norm (sopfr(nd)) 29

[sound info]
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21/19 is the hendrix second, also known as the large undevicesimal neutral second. It falls short of the Pythagorean major second (9/8) by a hendrix comma (57/56).

See also