Early French sound-on-disc system (1920s) — synchronized phonograph and film, similar to Vitaphone. Lost market competition quickly.
The Paréophone was a sound process from the early 1920s based on the phonograph record principle: a separately recorded shellac disc ran in sync with the film material, controlled by a mechanical coupling between the projector and the record player. The sound did not come from the film itself, but from this external source – comparable to the American Vitaphone process at the same time.
Practically, this meant for cinema managers and projectionists: special equipment, precise handling, and absolute discipline in synchronization were required. Minimal temperature differences, slight wear on belts or gears led to lip-sync errors. Changing records for longer films was logistically complex. Repairs and spare parts required specialists. For smaller cinemas, the acquisition was prohibitively expensive – while silent cinema continued to only need a pianist or an orchestra.
The Paréophone failed not due to sound quality, but due to its inflexibility and the economic realities of the European cinema market. While in America the major studios (Warner Bros. with Vitaphone, MGM with Movietone) invested massive financial and distribution resources, French manufacturers lacked this market power. The optical sound process – first Movietone, then the fully integrated optical soundtrack – prevailed because it was more robust, required less maintenance, and was easier for distributors to handle. The Paréophone disappeared from cinemas after a few years.