Roland Kayn (1933-2011): Cybernetics III (1969/1977).
"In my work the compositorial redactional methods are determined by acoustic-physical considerations. Important stimulation resulted from experience and knowledge of information theory and cybernetics. His development took a path outside the serial-aleatoric tendencies of the fifties, a path which can be described by the term 'cybernetic music'.
Since 1962, working on my scores of 'Galaxis' and 'Allotropie', I have been increasingly interested in the problem of the extent to which processes of automatically cybernetic origins can be reduced to the organic-sensory realm. In 'Cybernetics III' (1969) the main object was to control several independent sound sources in such a way that density of information corresponds to certain entropy values.
In the version produced in the Studio di Fonologia in Milan, ten sound sources are placed in relation to one another according to a particular selection principle. The entire basic material consists of sound spectra of vocal origin.
In contrast to purely electronic sound production, in which various oscillators provide the basic material, vocal spectra seemed to be more flexible in their inner structure for purposes of further transformation. Six basic categories of sound material are used, including animal noises too.
The material is modulated by means of electro-acoustic equipment and transformed by stages into new sound qualities."
Roland Kayn (fonte web).
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