6.3 ⚠️ Patent Nr. 314805

Patent Nr. 314805

Patentti Nr. 314805

Режиссер
Страна
Дата выхода
Жанры
документальный
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.