Film Sound AND Colour
In the 1920s, the development of electronic sound recording technologies made it practical to incorporate a soundtrack of speech, music and sound effects synchronized with the action on the screen.The resulting sound films were initially distinguished from the usual silent “moving pictures” or “movies” by calling them “talking pictures” or “talkies. The revolution they wrought was swift. By 1930, silent film was practically extinct in the US and already being referred to as “the old medium.”
Another major technological development was the introduction of “natural color,” which meant color that was photographically recorded from nature rather than added to black-and-white prints by hand-coloring, stencil-coloring or other arbitrary procedures, although the earliest processes typically yielded colors which were far from “natural” in appearance. While the advent of sound films quickly made silent films and theater musicians obsolete, color replaced black-and-white much more gradually. The pivotal innovation was the introduction of the three-strip version of the Technicolor process, first used for animated cartoons in 1932, then also for live-action short films and isolated sequences in a few feature films, then for an entire feature film, Becky Sharp, in 1935. The expense of the process was daunting, but favorable public response in the form of increased box office receipts usually justified the added cost. The number of films made in color slowly increased year after year.