1-3-5-7-9-11-13-15 octaeikosany

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Revision as of 09:36, 26 June 2026 by Yourmusic Productions (talk | contribs) (Almost finished the entire 15-odd limit.)
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Circle diagram.

The simplest possible octaeikosany, comprised of two-combination sum products of the first 8 odd numbers. This creates a scale of 1 65/64 33/32 13/12 35/32 9/8 55/48 7/6 39/32 5/4 21/16 65/48 11/8 45/32 35/24 143/96 3/2 25/16 77/48 13/8 5/3 55/32 7/4 11/6 15/8 91/48 2/1, with steps of 65/64 66/65 104/99 105/104 36/35 55/54 56/55 117/112 40/39 21/20 65/63 66/65 45/44 28/27 143/140 144/143 25/24 77/75 78/77 40/39 33/32 56/55 22/21 45/44 91/90 96/91. (5/4 and 15/8 appear twice, reducing it to a 26 note scale.) This contains all the smaller 15-odd-limit hexanies and dekanies, although some will require rotation to see in the mode they originally appear in. It has 14 perfect fifths and covers the whole harmonic sequence from 8-16 above the root, as well as the familiar diatonic scale in the lydian mode, making it more than capable of playing all kinds of music both familiar and xenharmonic.

! 1-3-5-7-9-11-13-15_Octaeikosany.scl
!
1 3 5 7 9 11 13 15 2-combination Octaeikosany
26
!
26.841
53.272
138.572
155.139
203.910
235.676
266.871
342.482
386.313
470.781
524.886
551.317
590.223
653.184
689.890
701.955
772.627
818.188
840.527
884.358
937.631
968.825
1049.362
1088.268
1107.398
1200