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.
- ジャンル: ドキュメンタリー
- 国: Finland
- ディレクター: Mika Taanila
- アクター:
