19/10: Difference between revisions

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| Cents = 1111.19930
| Cents = 1111.19930
| Name = undeviceismal diminished octave, <br>Eratosthenes' major seventh
| Name = undeviceismal diminished octave, <br>Eratosthenes' major seventh
| Color name =  
| Color name = 19og8, nogu octave
| FJS name = d8<sup>19</sup><sub>5</sub>
| FJS name = d8<sup>19</sup><sub>5</sub>
| Sound = jid_19_10_pluck_adu_dr220.mp3
| Sound = jid_19_10_pluck_adu_dr220.mp3
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[[Category:Major seventh]]
[[Category:Major seventh]]
[[Category:Eratosthenes]]
[[Category:Eratosthenes]]
[[Category:Pages with internal sound examples]]

Revision as of 03:47, 15 December 2021

Interval information
Ratio 19/10
Subgroup monzo 2.5.19 [-1 -1 1
Size in cents 1111.199¢
Names undeviceismal diminished octave,
Eratosthenes' major seventh
Color name 19og8, nogu octave
FJS name [math]\displaystyle{ \text{d8}^{19}_{5} }[/math]
Special properties reduced
Tenney norm (log2 nd) 7.56986
Weil norm (log2 max(n, d)) 8.49586
Wilson norm (sopfr(nd)) 26

[sound info]
Open this interval in xen-calc

In 19-limit just intonation, 19/10 is the undevicesimal diminished octave, measuring about 1111.2¢. In the Functional Just System and Helmholtz-Ellis notation, it is a diminished octave, obtained by adding 81/80 and 513/512 to the Pythagorean diminished octave, but it may be called the Eratosthenes' major seventh as it is sharp of the Pythagorean major seventh (243/128) by 1216/1215, the password aka Eratosthenes' comma.