Soria

! soria.scl

!

12 from a 17-notes cycle, equal-beating extended fifths (705.57 c.) sequence

12

!

481/445

4011/3560

2067/1780

1133/890

9503/7120

128/89

533/356

723/445

754/445

1233/712

1703/890

2/1

! Airos recurrent sequence x^3 = 13 - 8x (fourths of 494.4315 c.), Dudon 2008

! equal-beating of fourths, septimal minor thirds and harmonic sevenths :

! 3x^3 - 7 = 8(4 - 3x)

! also, differential coherence of 13/8 with the eq-b fourth (approx. 640/481)