The first breaking of the sound barrier was during World War 2. One can find more information from Wikipedia. By 1950s, new aircraft broke the sound barrier.
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Jam starts with breaking glass (a window being smashed).
Murray Spivak made the first sound film.
First production talkie- or sound film. this was by Warner Brothers who controlled the process, which made cartoons ( Bugs Bunny) and Newsreels live and vivid- and also a remote forerunner, process wise- of TV newcasting.
Sound began to be attached to motion pictures in the middle 1920s and synchronized sound started in the late 1920s.
Al Jolson