32/17: Difference between revisions

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'''32/17'''
{{Infobox Interval
|5 0 0 0 0 0 -1>
| Name = septendecimal major seventh, septendecimal diminished octave
| Color name = 17u7, su 7th
| Sound = jid_32_17_pluck_adu_dr220.mp3
}}
In [[17-limit]] [[just intonation]], '''32/17''' is the '''septendecimal major seventh''' or the '''septendecimal diminished octave''', depending on how one views it. It is also the octave-reduced 17th [[subharmonic]]. Its inversion is [[17/16]], the octave-reduced 17th harmonic. Measuring about 1095{{cent}}, it is the [[mediant]] between [[15/8]] and [[17/9]].


1095.0446 cents
== Terminology and notation ==
There exists a disagreement in different conceptualization systems on whether 32/17 should be a major seventh or a diminished octave. The major seventh view corresponds to [[Functional Just System]], with the formal comma [[4131/4096]] separating it from [[243/128]], the Pythagorean major seventh. The diminished octave view corresponds to [[Helmholtz-Ellis notation]], with the formal comma [[2187/2176]] separating it from [[4096/2187]], the Pythagorean diminished octave.  


[[File:jid_32_17_pluck_adu_dr220.mp3]] [[:File:jid_32_17_pluck_adu_dr220.mp3|sound sample]]
In practice, the interval category may, arguably, vary by context. One solution for the JI user who uses expanded [[circle-of-fifths notation]] is to prepare a [[Pythagorean comma]] accidental so that the interval can be notated in either category. 


In [[17-limit|17-limit]] [[Just_intonation|Just Intonation]], 32/17 is the "small septendecimal major seventh," as well as the 17th [[subharmonic|subharmonic]] octave-reduced. Measuring about 1095¢, it is the [[mediant|mediant]] between [[15/8|15/8]] and [[17/9|17/9]], the "large septendecimal major seventh". Its inversion is [[17/16|17/16]], the "large septendecimal semitone".
== See also ==
* [[17/16]] – its [[octave complement]]
* [[Gallery of just intervals]]


See: [[Gallery_of_Just_Intervals|Gallery of Just Intervals]]
[[Category:Seventh]]
[[Category:Major seventh]]
[[Category:Octave]]
[[Category:Diminished octave]]