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| WIP (the reason this is in userspace)
| | #redirect [[/Lefts and rights notation/]] |
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| Ordinal interval notation is a notation for [[just intonation]] in which all intervals are represented by a normal interval classification combined with an ordinal number.
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| To get the classification for an interval, multiply the interval classes of the prime harmonics which it factors into, which are predefined as follows:
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| {|class="wikitable"
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| |-
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| !Prime harmonic
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| !colspan="2"|Interval classification
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| |-
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| |[[2/1]]
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| |P8
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| |perfect octave
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| |-
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| |[[3/2]]
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| |P5
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| |perfect fifth
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| |-
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| |[[5/4]]
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| |M3
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| |major third
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| |-
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| |[[7/4]]
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| |m7
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| |minor seventh
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| |-
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| |[[11/8]]
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| |U4
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| |ultrafourth
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| |-
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| |[[13/8]]
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| |an6
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| |artoneutral sixth
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| |-
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| |[[17/16]]
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| |m2
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| |minor second
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| |-
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| |[[19/16]]
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| |m3
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| |minor third
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| |-
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| |[[23/16]]
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| |i5
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| |infrafifth
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| |-
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| |[[29/16]]
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| |m7
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| |minor seventh
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| |-
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| |[[31/16]]
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| |i8
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| |infraoctave
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| |-
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| |[[37/32]]
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| |UM2
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| |ultramajor second
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| |-
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| |[[41/32]]
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| |M3
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| |major third
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| |-
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| |[[47/32]]
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| |i5
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| |infrafifth
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| |}
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