16/15: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
| Icon =
| Name = just diatonic semitone, classic(al) diatonic semitone, ptolemaic diatonic semitone
| Ratio = 16/15
| Comma = yes
| Monzo = 4 -1 -1
| Cents = 111.73129
| Name = classic/just diatonic semitone, <br>classic/just minor second
| Color name = g2, gu 2nd
| Color name = g2, gu 2nd
| FJS name = m2<sub>5</sub>
| Sound = jid_16_15_pluck_adu_dr220.mp3
| Sound = jid_16_15_pluck_adu_dr220.mp3
}}
}}
{{Wikipedia|Semitone}}
The [[5-limit]] [[superparticular]] interval '''16/15''' is the '''just diatonic semitone''', '''classic(al) diatonic semitone''' or '''ptolemaic diatonic semitone'''<ref>For reference, see [[5-limit]]. </ref>.


The [[5-limit]] [[superparticular]] interval '''16/15''' is the '''classic''' or '''just diatonic semitone''' – the difference between the major third [[5/4]] and the fourth [[4/3]], and between [[3/2]] and [[8/5]].
It is the difference between:
* the major second [[9/8]] and the minor third [[6/5]];
* the major third [[5/4]] and the fourth [[4/3]];
* the perfect fifth [[3/2]] and the minor sixth [[8/5]];
* the major sixth [[5/3]] and the minor seventh [[16/9]];
* the major seventh [[15/8]] and the perfect octave [[2/1]].
 
== Approximation ==
16/15 is very accurately approximated by [[43edo]] (4\43).


== Temperaments ==
== Temperaments ==
When this ratio is taken as a comma to be tempered, it produces [[father]] temperament, where 4/3 and 5/4 are equated. In this temperament, major thirds and fifths become [[octave-inverses]] of each other.
When this ratio is taken as a [[comma]] to be [[tempering out|tempered out]], it produces [[father]] temperament, and lends itself the name '''father comma'''. In this [[exotemperament]], 4/3 and 5/4 are equated, and major thirds and fifths become [[octave complement]]s of each other. It is a [[Mersenne comma]].
 
The following [[linear temperament]]s are [[generate]]d by a [[~]]16/15:
* [[Vavoom]]
* [[Stockhausenic]]
 
In addition, this [[fractional-octave temperaments]] are generated by a ~16/15:
* [[Quintosec]]
{{todo|complete list}}
 
Some [[11th-octave temperaments]] treat ~16/15 as the period, including [[hendecatonic]].


== See also ==
== See also ==
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* [[45/32]] – its [[fifth complement]]
* [[45/32]] – its [[fifth complement]]
* [[5/4]] – its [[fourth complement]]
* [[5/4]] – its [[fourth complement]]
* [[256/243]] - the Pythagorean (3-limit) diatonic semitone
* [[256/243]] the Pythagorean (3-limit) diatonic semitone
* [[Gallery of just intervals]]
* [[Gallery of just intervals]]
* [[List of superparticular intervals]]
* [[List of superparticular intervals]]
* [[16/15ths equal temperament|AS16/15]] - its ambitonal sequence


[[Category:5-limit]]
== Notes ==
[[Category:Interval]]
<references/>
[[Category:Just interval]]
 
[[Category:Ratio]]
[[Category:Listen]]
[[Category:Second]]
[[Category:Second]]
[[Category:Semitone]]
[[Category:Semitone]]
[[Category:Superparticular]]
[[Category:Father]]
[[Category:Subharmonic]]
[[Category:Commas named after their interval size]]
[[Category:Pages with internal sound examples]]