Lauste and unidentified assistants working on talking pictures at his Melbourne Square garden in Brixton 1911. Eug癡ne Augustin Lauste (January 17, 1857 - June 27, 1935 in Montclair, New Jersey) was a French inventor instrumental in the technological development of the history of cinema. He emigrated to the United States in 1886 where he worked as an assistant to at the Edison Laboratories. He contributed to the development of the Kinetoscope, an invention for which Edison would claim credit. He left Edison in 1892. He then worked with Woodville Latham, for whom he engineered the Eidoloscope and assisted with the design of the Latham loop used in film projection and image capture. It isolates the filmstrip from vibration and tension, allowing movies to be continuously shot and projected for extended periods. He joined the American Biograph Company in 1896 and remained there for four years before moving to Brixton, England. In 1904 he prepared his first sound-on-film model. In 1911 he exhibited a sound film in the United States, possibly the first-ever American showing of a movie using sound-on-film technology. Before he could market his system more widely, though, WWI intervened. He is sometimes referred to as the "father of sound". He died in 1935 at the age of 78.