THE ELECTRONIC WORKS OF GYÖRGY LIGETI AND THEIR ...

Sonic Materials (compact vs. diffuse)
Only along the axis from diffuse to compact does the piece move with any sort of
moderation, that is to say, this is the only dimension which mitigates the abrupt two part
division of this region. The exceptionally wide glissing noise band of Event 1 is echoed by
a less diffuse gliss (a narrower band of noise with a significant “overtone” occurring a
th perfect 12 above) in Event 2, followed in turn by a mixture noises some of which are
narrow and others of which are wide. All other categories change immediately with the
onset of Event 3; the sustained single glisses give way to a multitude of shorter, level,
events.
Region F
Region F is in many ways the culmination of the developments of dialogues and
the use of channels seen in the second phase of the exposition. Instead of presenting one
type of material, which may undergo some transformations through the course of the
region, the degree of internal mixture is such that there are now two distinct types of
material coexisting within Region F. A clear dialogue emerges between compact, pitch
based events and noisier, diffuse, and mostly higher pitched sounds resembling scratches
and whispers. Previously, changes in type of material–including changes in pitch versus
noise based material–worked together with channel separation to define regions here the
two types coexist. Due to the frequency of their alternation, they cannot be considered
separate regions; the average length of each segment of a given material is comparable to
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