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Trivia Records / Zapisi si online archiving, publishing facility for various formats - commonly known as multimedia or intermedia. A long-term project of Trivia Art Association.

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Information: author: Borut Savski title: Four bandpass active audio frequency filters to control a joystick A coproduction with DUM. http://www.dum-club.si/ Circuit: On the photo left one can see a boxed circuit. We receive the audio signal through the cinch input, from where it gets distributed to the four pcb inputs (the circuit is a simple quadruple version of the basic active filter). For the correct plus and minus voltages we have a power supply made from 7809 stabilizer and a resistor that defines the correct negative voltage needed for the joystick controller. Better photographs will follow. The video of dancing balloons can be seen here: http://www.vadimfishkin.si/l_air/l_air.htm Download these files pdf VadimFilterAdder2009_2 schematics pdf VadimFilterAdder layout pdf VadimFilterAdder PCB Linked items Borut Savski - Analogic event generator Borut Savski - Theremidi - Capacitive proximity sensor II Borut Savski - Theremicro, Theremini - Capacitive proximity sensor I

Functionality: Electronic circuit was made for a project of Vadim Fishkin, to control the 3D choreography of two balloons by means of one audio channel (left-right and up-down) - according to the music recorderd on the other audio channel of a cd. For this we used four separate audio frequencies.