Hal Roach looks on as technicians install Vitaphone equipment in his studio screening room, ca. 1928. (Click on the image to enlarge it.) 'A Century of Sound': Q&A with former UCLA Preservation Officer Robert Gitt about the evolution of film sound technology Long before multi-track Dolby stereo and digital sound technology, there were the Kinetophone and the Vitaphone systems – not to mention organ and piano players at movie houses. Much of that is discussed in A Century of Sound, which chronicles the evolution of film sound from the late 19th century to the mid-1970s. A Century of Sound has been split into two parts, with a third installment currently in the planning stages. They are: Vol. 1, “The Beginning, 1876-1932,” which came out on DVD in 2007. Vol. 2, “The Sound of Movies: 1933-1975,” which came out on Blu-ray in 2015. The third installment will bring the presentation into the 21st century.