--- /dev/null
+ol = library("oscillator.lib");
+fl = library("filter.lib");
+
+//process = ol.sawtooth_demo : fl.parametric_eq_demo :
+// fl.mth_octave_spectral_level_demo(2) <: _,_;
+process =
+ vgroup("[1]", ol.sawtooth_demo) :
+ vgroup("[2]", fl.parametric_eq_demo) :
+ vgroup("[3]", fl.mth_octave_spectral_level_demo(2))
+ <: _,_;
+