The Order Of Evaluation For Funs - Kurzweil K2000 - MUSICIANS GUIDE Musician's Manual

FUNS

The Order of Evaluation for FUNs

The Order of Evaluation for FUNs
The K2vx is a computer, and processes information at very high speeds. Every 20 milliseconds,
it checks the condition of every active parameter, evaluates any changes, and processes the new
information. This is done according to a rigid set of priorities that determines the sequence in
which the parameters are evaluated.
The status of each control source is evaluated in turn, according to the sequence in which they
appear in the Control Source list. In the case of the FUNs, they are evaluated in the following
order: FUN1, FUN2, FUN3, FUN4 (although there are a few control sources that get evaluated
between FUN2 and FUN3).
This sequence of evaluation becomes signiÞcant if you assign a FUN as the input for another
FUN. You should always assign FUNs as inputs for higher-numbered FUNs. For example, you
might assign FUN1 as input a for FUN2. Since the K2vx needs to know the value of FUN1Õs
output before it can evaluate FUN2, assigning the FUNs in this way will ensure that the K2vx
can evaluate both FUNs as quickly as possible.
If you were to assign FUN2 as an input for FUN1, then when the time came for the K2vx to
evaluate FUN1, it wouldnÕt know the current value for FUN2Õs output, so it would evaluate
FUN1 according to the previous value of FUN2. There would be a delay of one evaluation cycle
before a change in FUN2 would be reßected in FUN1. This might have an adverse affect on the
start of notes as you play. You wonÕt harm anything, but you might not hear what you expect to
hear.
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