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Patentti Nr. 314805

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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Genre: Documentaire

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Réalisateur: Mika Taanila

Pays: Finland

Durée: 2 minutes

Qualité: HD

Libération: 2020

Patentti Nr. 314805 (2020) - IMDb  6