20_10_5
additional parameters: ifqm, imax, ibegkdyn, ibegae, imid,
                       ibreakp, iend, irvt, ileft

The instrument has a variable amplitude envelope and a variable
modulation index contour. Part of the sound is reverberated and
mixed with the unreverberated portion. 

For this instrument, a network score generator has been written
(Spruit 1993). It provides unique sets of scores. The Prolog
program defines a network of relationships between parameters.
The user specifies the valid range of the individual parameter
values and a start value, which is the requested total duration
of the score in seconds.

Also, one can choose to generate more than one cycle during one
run of the score generator. All score file cycles run parallel to
each other. 

The network constitutes a grammar and the generation process
involves no randomness. A parameter can influence its own value
(recursive) and/or the value of other parameters.

In this way all parameter values of the score are determined by
specific mathematical relations between them. The result is
written to a score file.

(illustration network dependencies)

(flowchart)
(.orc and .sco files)

