(Patentti Nr. 314805)

Content: 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.

Countries:

Finland

Genres:

Documentary

Runtime:

2 minutes

Year:

2020

Directors:

Mika Taanila

Production companies:

Elokuvayhtiö Testifilmi

Actors:

Crews:

Director

Writer

Writer