OTC 2L 8s

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Omnitetrachordal MODMOS scale

2L+8s

10 tones (4+2+4)

Pajara MODMOS. Best at lower ratios of L/s.

P = 1.8849491924

Q = 4.8274237885 (4/3 = L+2.5s)

L = 120.00 to 600.00 cents (192.18 cents @ P, 328.12 cents @ Q)

s = 0.00 to 120.00 cents (101.96 cents @ P, 67.97 cents @ Q)

9/8 = 2s (0.00 to 240.00 cents)

4/3 = L+3s (480.00 to 600.00 cents)

MOS generator = s (0.00 to 120.00 cents)

MOS period = 1/2 octave (600.00 cents)

notable EDOs: 12, 14, 16, 22, 26

LssssLssss (MOS, not OTC)

     ||   

LsssssLsss (OTC MODMOS) - gen chains 6,4

modes:

sssL ss sssL Standard Pentachordal Minor
ssLs ss ssLs -
sLss ss sLss Alternate Pentachordal Major
Lsss ss Lsss -
ss sssL sssL -
ss ssLs ssLs Alternate Pentachordal Minor
ss sLss sLss sssL sssL ss -
ss Lsss Lsss ssLs ssLs ss Standard Pentachordal Major
sLss sLss ss -
Lsss Lsss ss -

(The names of the modes are Paul Erlich's - see http://lumma.org/tuning/erlich/erlich-decatonic.pdf.)

10_02_08_sLss_ss_sLss.png

See also

References

  • Noted as omnitetrachordal by Paul Erlich no later than 2002. See tuning-math list messages 3685 and 10987.