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ear 13&14.5 March 1974 379w

p.1 --Jan Pusina

RECYCLED RADIO a live radio piece for one or more tuners and synthesizers

The circuit shown above is to be set up in each contributing studio. Its effect is to chop incoming FM radio signals and oscillator tones into short, periodic sound parcels, whose frequency of occurrence varies according to the dynamics of the program material being received.

The FM tuner should be turned on at the beginning of the performance and scanned at the performer's option. Stations rather than noise bands should be favored.

The oscillator is to be played as follows: one or two short notes, one or two longer notes (less than one minute) and one note longer than a minute, all of unvarying pitches chosen by the performers, should be keyed; or switched on and off abruptly.

The chopping rate should be determined by the dynamic level of the program input, i.e., the louder the program the faster the pulse rate. This relationship may be inverted. The pulse rate should vary between about .2 - 12 hz, i.e., one appearance every 5 seconds and 12 appearances per second. If an envelope follower is unavailable it may be replaced by a Schmidt trigger, followed by an envelope generator which is set to an overall envelope time varying from one to thirty seconds. Any window type may be used which alternately suppresses and passes the program material, as long as it does not produce clicks.

Bypass lines A, B, and C may be mixed in at any time to defeat the function of the circuit and allow the programs and oscillator tones to pass unaltered.

The levels of the mixers and the distribution of signals at the broadcasting station should be varied during the course of the performance in such a way as to provide a representative gamut of combinatorial possibilities. It is desirable to reprocess signals form one system to another via the broadcasting station.

The duration of the piece may be decided upon by mutual consent of the performers.

--Jan Pusina

p.4

Jan Pusina will perform music in a 3 dimensional speaker arrangement involving the interaction of electronically generated tones and feedback sounds. The Cat's Paw Palace, 2547A - 8th St., Berkeley, 8:30, Mar. 2.


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