ARITH-MEAN-SOB
[GENERIC-FUNCTION]
OM-JI
Function Reference
| - 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).