Finnish engineer Eric Tigerstedt solved the dilemma of sound-on-film already before the First World War. All images and sounds in this short film are produced from the surviving test materials originally created in 1914.
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Sign inOriginal NamePatentti Nr. 314805 (Patent Nr. 314805)
StatusReleased: 4 years ago
May 17, 2020
Languagesuomi
Spoken Languagessuomi
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