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Lee de Forest was born in 1873 in Council Bluffs, Iowa, the son of Anna Margaret (née Robbins) and Henry Swift DeForest. [1] [2] He was a direct descendant of Jessé de Forest, the leader of a group of Walloon Huguenots who fled Europe in the 17th century due to religious persecution.
The film focused primarily [5] on the three pioneers [6] of radio in America: Lee de Forest, Edwin Howard Armstrong, and David Sarnoff. [7] The program interspersed audio and musical highlights of "old time" radio with the stories, achievements, failures, scams and bitter feuds between each of the main protagonists. [8]
Lee de Forest, while decrying the excesses of the company's senior management, had good things to say about some of the technical staff, writing: "Charles Galbraith and his corps of honest, capable, hard-working men, engineers, and operators who had been instrumental in building up the American De Forest Wireless Telegraph Company, had gone ...
Lee De Forest files his first United States patent for the Phonofilm sound-on-film process. United States firearms designer John Browning finalizes the design of the M1919 Browning machine gun. United States firearms designer John T. Thompson finalizes the design of the Thompson submachine gun.
Phonofilm is an optical sound-on-film system developed by inventors Lee de Forest and Theodore Case in the early 1920s. In 1919 and 1920, de Forest, inventor of the audion tube, filed his first patents on a sound-on-film process, DeForest Phonofilm, which recorded sound directly onto film as parallel lines. These parallel lines photographically ...
Lee de Forest broadcasting Columbia phonograph records (1916) [5] In 1914, de Forest established a laboratory at 1391 Sedgwick Avenue in the Highbridge section of the Bronx in New York City. Vacuum-tube transmitters had recently been developed and were found to be superior to arc-transmitters for audio transmissions. [ 6 ]
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Lee de Forest broadcasting Columbia phonograph records on New York station 2XG in 1916. In 1892, Emile Berliner began commercial production of his gramophone records, the first disc records to be offered to the public. The earliest broadcasts of recorded music were made by radio engineers and experimenters.