Delta-rational chord: Difference between revisions

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 Precession being the second-order difference (Δ<sup>2</sup>) of frequency, we similarly have the theoretical notions of Δ<sup>3</sup>-rationality, Δ<sup>4</sup>-rationality, and so on. The practical consequences of higher-order differences are as of yet speculative, though a few people have reported finding precession psychoacoustically meaningful.
-== See also ==
-* [[Linear chord]]: In linear chords, all the frequency differences between adjacent notes are simply related (i.e. equal or in a simple ratio like 1:2). In DR chords, some of them are, but not necessarily all of them.