Patent Nr. 314805

• Movies
• 2020-05-17
• FI
• Released
• 0h 2m
• FI
• Documentary

• 0.0
• 0

Production

Elokuvayhtiö Testifilmi

Storyline

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.