In 1955, the Radio Italiana (Rai) established the Studio di Fonologia Musicale at RAI Center in Corso Sempione 27, Milan (Italy). Physicist Dr. Alfredo Lietti builded the famous “nine oscillators”, the white noise generator, the amplitude selector, the dynamic modulator, the ring modulators, the frequency shifter, the pulse modulator, the electronic fader, the “toc” generator, the cathodic comparer, the octave filters and the third octave filters.
Almost half a century later, the museum of Musical Instruments in the Castello Sforzesco now houses the equipment on which Luciano Berio and Bruno Maderna conducted the first experiments in electronic music.
It’s fascinating stuff about on of the lesser-known pioneering electronic music studios. There are also a series of videos that look at the Studio di Fonologia Musicale: