ChronophoneThe Chronophone is an apparatus patented by Léon Gaumont in 1902 to synchronise the Cinématographe (Chrono-Bioscope) with a disc Phonograph (Cyclophone) using a "Conductor" or "Switchboard". This sound-on-disc display was used as an experiment from 1902 to 1910. In January 1911, the industrial exploitation started at the Olympia.
PhonoscèneThe Phonoscène was an antecedent of music video and was regarded by Michel Chion, Noël Burch and Richard Abel as a forerunner of sound film. The first Phonoscènes were presented by Léon Gaumont in 1902 in France. The first official presentation in the United Kingdom took place at Buckingham Palace in 1907. The last phonoscène was presented in 1917. TechnologyThe Phonoscène was a forerunner of sound film.
Léon GaumontLéon Ernest Gaumont (French:; 10 May 1864 – 10 August 1946) was a French inventor, engineer, and industrialist who was a pioneer of the motion picture industry. He founded the world's oldest operating film studio, Gaumont, and worked in partnership with Solax Studios. BiographyLéon Ernest Gaumont, born in Paris was gifted with a mechanical mind which led him to employment manufacturing precision instruments.Sound filmMotion picture with synchronized sound1908 poster advertising Gaumont's sound films. The Chronomégaphone, designed for large halls, employed compressed air to amplify the recorded sound.A sound film is a motion picture with synchronized sound, or sound technologically coupled to image, as opposed to a silent film.
VitaphoneVitaphone was a sound film system used for feature films and nearly 1,000 short films made by Warner Bros. Pictures and its sister studio First National from 1926 to 1931. Vitaphone is the last major analog sound-on-disc system and the only one that was widely used and commercially successful. The soundtrack is not printed on the film, but issued separately on phonograph records.
Movie projectorA movie projector (or film projector) is an opto-mechanical device for displaying motion picture film by projecting it onto a screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras. Modern movie projectors are specially built video projectors (see also digital cinema).
PhonographA phonograph, later called a gramophone, and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of sound. The sound vibration waveforms are recorded as corresponding physical deviations of a helical or spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a record.
Warner Bros.Warner Bros. is a brand name that has been used by several multinationalmass media and entertainment companies and corporations, mostly based in the United States, with attributions to Warner Bros. Pictures, a major American film studio founded on April 4, 1923, and the original namesake. As of 2026 Warner Bros. Discovery owns the motion picture and television assets derived from the original Warner Bros.
Interlock (engineering)An interlock is a feature or device that is commonly used in engineering and safety systems to keep machines, devices, and processes from operating until the guards are in place or the required circumstances are met. When being utilized, interlocks are used to prevent or reduce the chances of injury to the operator, damage to the equipment, and actions being completed in the wrong order or in an unsafe way.
FilmVisual art consisting of moving imagesA Trip to the Moon (1902) is considered to be a turning point in the development of narrative and science fiction films.A film, movie, or motion picture is a work of visual art that simulates experiences and otherwise communicates ideas, stories, perceptions, emotions, or atmosphere through the use of moving images that are generally, since the 1930s, synchronized with sound and sometimes feature other sensory stimuli.TimecodeA timecode (alternatively, time code) is a sequence of numeric codes generated at regular intervals by a timing synchronization system. Timecode is used in video production, show control and other applications that require temporal coordination or logging of recording or actions. Video and filmIn video production and filmmaking, SMPTE timecode is used extensively for synchronization, and for logging and identifying material in recorded media.
Audio-to-video synchronizationAudio-to-video synchronization (AV synchronization, also known as lip sync, or by the lack of it: lip-sync error, lip flap) refers to the relative timing of audio (sound) and video (image) parts during creation, post-production (mixing), transmission, reception and play-back processing. AV synchronization is relevant in television, videoconferencing, or film.*As an Amazon Associate I earn from qualifying purchases.