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| {{Infobox AFDO|steps=2}} | | {{Infobox harmonics|2}} |
| '''2afdo''' ([[AFDO|arithmetic frequency division of the octave]]), or '''2odo''' ([[otonal division]] of the octave), if the attempt is made to use it as an actual [[tuning system]], would divide the [[octave]] into two arithmetically equal parts. It is a superset of 1afdo (equivalent to [[1edo]]) and a subset of [[3afdo]]. It is equivalent to [[IFDO|2ifdo]] (2 inverse-arithmetic frequency divisions of the octave), and to the [[1L 1s|monowood]] [[mos scale]] tuned to the just perfect fifth or just perfect fourth. As a [[scale]] it may also be known as [[harmonic mode|mode 2 of the harmonic series]] or the [[overtone scale #Over-n scales|Over-2]] scale. The only non-trivial intervals are the just perfect fifth [[3/2]], since 3/2 is arithmetically halfway between 1/1 and 2/1, and its [[octave complement]] [[4/3]].
| | {{Harmonics intro|2}} It is equivalent to subharmonics 2–4, and to the [[1L 1s|monowood]] [[mos scale]] tuned to the just perfect fifth or just perfect fourth. The only non-trivial intervals are the just perfect fifth [[3/2]], since 3/2 is arithmetically halfway between 1/1 and 2/1, and its [[octave complement]] [[4/3]]. |
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| == Intervals == | | == Intervals == |
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| | [[File:Jid_2_1_pluck_adu_dr220.mp3]] | | | [[File:Jid_2_1_pluck_adu_dr220.mp3]] |
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| [[Category:IFDO|#]]
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