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Phonofilm

Код 2390146

  • ISBN: 978-5-5111-8805-8

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High Quality Content by WIKIPEDIA articles! In 1919, Lee De Forest, inventor of the audion tube, filed his first patent on a sound-on-film process, DeForest Phonofilm, which recorded sound directly onto film as parallel lines. These parallel lines photographically recorded electrical waveforms from a microphone, which were translated back into sound waves when the movie was projected. Some sources say that DeForest improved on the work of Finnish inventor Eric Tigerstedt — who was granted German patent 309.536 on 28 July 1914 for his sound-on-film work — and on the Tri-Ergon process, patented in 1919 by German inventors Josef Engl, Hans Vogt, and Joseph Massole.

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ISBN: 978-5-5111-8805-8

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Теория машин и механизмов ГОСТы, стандарты Искусствоведение

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