User:Unque/15edo-Chords: Difference between revisions
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When creating chords in 15-EDO, I tend consider the sum of the stacked intervals to be more important for the chord's function than the values of those intervals; for instance, 4+5 and 6+3 both have a sum of 9, so the chords [0 4 9]\15 and [0 6 9]\15 would be placed into the same category despite having completely different step sizes. | When creating chords in 15-EDO, I tend consider the sum of the stacked intervals to be more important for the chord's function than the values of those intervals; for instance, 4+5 and 6+3 both have a sum of 9, so the chords [0 4 9]\15 and [0 6 9]\15 would be placed into the same category despite having completely different step sizes. | ||
Here, intervals | Here, the intervals inherited from the 5-EDO will be used as the "target" consonances - those are steps 6, 9, and 12 of 15-EDO. Two intervals that add up to 6 form "Suspended" triads; intervals adding up to 9 form "Pathic" triads; and intervals adding up to 12 form "Metallic" triads. Note that these names are idiosyncratic, arbitrary, and do not reflect any mathematical or harmonic properties of these chords. | ||
Additionally, the target intervals can be Augmented or Diminished if they are raised or lowered by one step of 15-EDO. Intervals adding up to 7 form "Suspended-Augmented" triads, intervals adding up to 11 form "Metallic-Diminished" triads, etc. | Additionally, the target intervals can be Augmented or Diminished if they are raised or lowered by one step of 15-EDO. Intervals adding up to 7 form "Suspended-Augmented" triads, intervals adding up to 11 form "Metallic-Diminished" triads, etc. | ||
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* [0 2 9]\15 would be called PatL, or Pathic Superlead. | * [0 2 9]\15 would be called PatL, or Pathic Superlead. | ||
Note that | Note that this naming scheme specifies which inversion a chord is in; for instance, the Pat3 chord can be rotated to form a PatAug2 chord, and again to form a MetDim4 chord. | ||