Patent Nr. 314805(2020)

关键词： Mika Taanila 短片

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Finnish engineer Eric Tigerstedt solved the dilemma of sound-on-film already bef

Plot Summary:Finnish engineer Eric Tigerstedt solved the dilemma of sound-on-film already before World War I. All images and sounds in this short film are produced from the surviving test materials originally created in 1914.