This report describes a system intended primarily for high quality sound recording on film. It was privately developed by a German physicist, Dr. Carlheinz Becker, of Thansay über Rosenheim. The system employs well‐known means in some respects, but has the important advantage of giving excellent 3‐channel reproduction of great dynamic range and low noise level using a sound track of total width of only 2.65 millimeters.