 In 1902, Léon Gaumont demonstrated his sound-on-disc Chronophone, involving an electrical connection he had recently patented, to the French Photographic Society.Four years later, Gaumont introduced the Elgéphone, a compressed-air amplification system based on the Auxetophone, developed by British inventors Horace Short and Charles Parsons.Despite
high expectations, Gaumont's sound innovations had only limited commercial success—though improvements, they still did not satisfactorily address the three basic issues with sound film and were expensive as well.