Silent film
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A silent film is a film without synchronized recorded sound. Though silent films convey narrative and emotion visually, various plot elements or key lines of dialogue may, when necessary, be conveyed
A still from 1921's The Four Horsemen of the Apocalypse, one of the highest-grossing silent films
Aziza Amir in Laila (1927)
The Cabinet of Dr. Caligari (1920) used stylized inter-titles.
Lillian Gish, the "First Lady of the American Cinema", was a leading star in the silent era with one of the longest careers—1912 to 1987.
Sound film
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A sound film is a motion picture with synchronized sound, or sound technologically coupled to image, as opposed to a silent film. The first known public exhibition of projected sound films took place
1908 poster advertising Gaumont's sound films. The Chronomégaphone, designed for large halls, employed compressed air to amplify the recorded sound.
Image from The Dickson Experimental Sound Film (1894 or 1895), produced by W.K.L. Dickson as a test of the early version of the Edison Kinetophone, combining the Kinetoscope and phonograph.
Eric M. C. Tigerstedt (1887–1925) was one of the pioneers of sound-on-film technology. Tigerstedt in 1915.
Poster featuring Sarah Bernhardt and giving the names of eighteen other "famous artists" shown in "living visions" at the 1900 Paris Exposition using the Gratioulet-Lioret system.