INSTALLATIONS OF "IDEL" SERIES
Automatic light-music installations of that type had been worked out by the design office "Prometheus" in 1968-1971 years. They are intended for simultaneous performing of music and visual (lighting) show. The principle of its operation is as follows: every moment of time the electronic device reads current sound data (intensity, frequency, registers) and set in correspondence with them a certain values of visual parameters - brightness, color, shape and speed of ornamental figures (the latter are produced by the perforated rotating disk). The distinctive feature of this installation is that it's program varies automatically at the moments of pauses in music.
A specimen of the installation was given in 1971 to the detachment of cosmonauts, and for a long time it was demonstrated in their recreation centre. It was handed to them at the celebration of 10-th anniversary of Yu.A.Gagarin space flight.