Delta-rational chord: Difference between revisions
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# A chord that has a delta signature with all entries +1 is called ''[[isoharmonic chord|isodifferential]]''. | # A chord that has a delta signature with all entries +1 is called ''[[isoharmonic chord|isodifferential]]''. | ||
Due to the aforementioned equivalence of delta signatures under scaling, delta signatures of ''n'' terms are really elements of a projective space <math>\mathbb{R}\mathbf{P}^{n-1}</math>, specifically in the image of the all-positive orthant. | Due to the aforementioned equivalence of delta signatures under scaling, delta signatures of ''n'' terms are really elements of a projective space <math>\mathbb{R}\mathbf{P}^{n-1}</math>, specifically in the image of the all-positive {{w|orthant}}. | ||
In practice these terms can loosely refer to approximations of mathematically exact PDR and FDR chords, for example in [[edo]] tunings. | In practice these terms can loosely refer to approximations of mathematically exact PDR and FDR chords, for example in [[edo]] tunings. | ||