ARITH-MEAN-SOB

[GENERIC-FUNCTION]


OM-JI
Function Reference
ARGUMENTS:
  - grave First ratio [default = 1]
  - agudo Second ratio [default = 5/4]

Description:

It gives the arithmetic mean of two ratios, and it does the ascendant sobreposition of the result with the first ratio and the descent sobreposition with the second ratio.

This is a procedure used by Ben Johnston in your strings quartets no. 2 and no. 3. See the article Scalar Order as a Compositional Resource (1964).



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