8/7: Difference between revisions
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| Monzo = 3 0 0 -1 | | Monzo = 3 0 0 -1 | ||
| Cents = 231.17409 | | Cents = 231.17409 | ||
| Name = septimal supermajor second | | Name = septimal whole tone, <br>supermajor second, <br>septimal major second | ||
| Color name = r2, ru 2nd | |||
| FJS name = M2<sub>7</sub> | |||
| Sound = jid_8_7_pluck_adu_dr220.mp3 | | Sound = jid_8_7_pluck_adu_dr220.mp3 | ||
}} | }} | ||
In [[Just Intonation]], 8/7 is the | In [[Just Intonation]], 8/7 is the '''supermajor second''' or '''septimal major second''' of approximately 231.2¢. Although it falls between the familiar major second and minor third of [[12edo]], it generally sounds more like a wide second than a narrow third. It can be found between the 7th and 8th overtones in the harmonic series and is thus a [[superparticular]] ratio. In [[7-limit]] JI and higher, it is treated as a consonance, particularly in the context of a chord such as 4:5:6:7:8, where it appears between the harmonic seventh ([[7/4]]) and octave. It differs from the Pythagorean major second of [[9/8]] by [[64/63]], a microtone of about 27.3¢. It's close in size to one step of 5edo = 240¢. | ||
== See also == | == See also == | ||
* [[7/4]] – its [[octave complement]] | |||
* [[21/16]] – its [[fifth complement]] | |||
* [[Gallery of Just Intervals]] | * [[Gallery of Just Intervals]] | ||
* [ | * [[Wikipedia:Septimal_whole_tone|Septimal whole tone - Wikipedia]] | ||
[[Category:7-limit]] | [[Category:7-limit]] | ||
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[[Category:Interval ratio]] | [[Category:Interval ratio]] | ||
[[Category:Second]] | [[Category:Second]] | ||
[[Category:Whole tone]] | |||
[[Category:Superparticular]] | [[Category:Superparticular]] | ||
[[Category:Over-7]] | [[Category:Over-7]] | ||
[[Category:Subharmonic]] | [[Category:Subharmonic]] | ||