| ← 2ifdo 3ifdo 4ifdo →
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| Prime factors
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3
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| Fifth
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6 / 4 (701.9 cents)
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3ifdo (inverse-arithmetic frequency division of the octave), or 3-UDO (utonal division of the octave), if the attempt is made to use it as an actual tuning system, would divide the octave into three inverse-arithmetically equal parts. It is a superset of 2ifdo (equivalent to 2afdo) and a subset of 4ifdo. 3ifdo is the first nontrivial ifdo since it is the first ifdo to demonstrate chirality. Its inverse is 3afdo. As a scale it may also be known as mode 3 of the subharmonic series or the Under-3 scale. The notes of this IFDO form a just minor triad in root position.
Intervals