15/14: Difference between revisions

From Xenharmonic Wiki
Jump to navigation Jump to search
Xenwolf (talk | contribs)
simplified list, added links, added categories, expanded see also section
Clarification
Line 7: Line 7:
| Sound = jid_15_14_pluck_adu_dr220.mp3
| Sound = jid_15_14_pluck_adu_dr220.mp3
| Color name = ry1, ruyo semitone
| Color name = ry1, ruyo semitone
| FJS name = A1<sup>5</sup><sub>7</sub>
}}
}}
'''15/14''' is a [[superparticular]] ratio with a numerator which is the fifth [http://en.wikipedia.org/wiki/Triangular_number triangular number].
'''15/14''' is a [[superparticular]] ratio with a numerator which is the fifth [[Wikipedia:Triangular_number|triangular number]].  


It may be found as the interval between many [[7-limit]] ratios, including:
It may be found as the interval between many [[7-limit]] ratios, including:
Line 24: Line 25:
* [[26/15]] and [[13/7]]
* [[26/15]] and [[13/7]]
* [[7/4]] and [[15/8]]
* [[7/4]] and [[15/8]]
Although called "septimal diatonic semitone" for its proximity (and conflation in systems such as septimal [[meantone]]) with the classic diatonic semitone [[16/15]], 15/14 is a [[Wikipedia:chromatic semitone|chromatic semitone]] in both [[Helmholtz-Ellis notation]] and [[Functional Just System]] because it is [[5120/5103]] larger than the apotome [[2187/2048]].


== See also ==
== See also ==
* [[Gallery of Just Intervals]]
* [[Gallery of Just Intervals]]
* [[28/15]] its inverse interval
* [[28/15]] its [[octave complement]]
* [http://en.wikipedia.org/wiki/Septimal_diatonic_semitone Septimal diatonic semitone - Wikipedia]
* [[Wikipedia:Septimal_diatonic_semitone|Septimal diatonic semitone - Wikipedia]]


[[Category:7-limit]]
[[Category:7-limit]]

Revision as of 11:28, 18 September 2020

Interval information
Ratio 15/14
Factorization 2-1 × 3 × 5 × 7-1
Monzo [-1 1 1 -1
Size in cents 119.4428¢
Name septimal diatonic semitone
Color name ry1, ruyo semitone
FJS name [math]\displaystyle{ \text{A1}^{5}_{7} }[/math]
Special properties superparticular,
reduced
Tenney norm (log2 nd) 7.71425
Weil norm (log2 max(n, d)) 7.81378
Wilson norm (sopfr(nd)) 17

[sound info]
Open this interval in xen-calc

15/14 is a superparticular ratio with a numerator which is the fifth triangular number.

It may be found as the interval between many 7-limit ratios, including:

Although called "septimal diatonic semitone" for its proximity (and conflation in systems such as septimal meantone) with the classic diatonic semitone 16/15, 15/14 is a chromatic semitone in both Helmholtz-Ellis notation and Functional Just System because it is 5120/5103 larger than the apotome 2187/2048.

See also