Example image of eyePlorer eyePlorer map for 'Sound-on-film': Sound film Analog signal Digital Magnetism Optics Gramophone record Sound-on-disc Release print Light-emitting diode Charge-coupled device Photodiode Companding Matrix decoder Signal-to-noise ratio 35 mm film 70 mm film Iron(III) oxide 20th Century Fox Movietone sound system Western Electric Dolby Laboratories RCA Photophone Cinema Digital Sound Fantasia (film) Fantasound Lee De Forest Phonofilm Walt Disney A Few Moments with Eddie Cantor A Musical Monologue Ben Bernie and All the Lads Graphical sound Joseph Tykociński-Tykociner Polish Academy Award for Best Sound Steenbeck Theodore Case Theodore Case Sound Test: Gus Visser and His Singing Duck Tri-Ergon Black and Tan (The Movie) My Old Kentucky Home (film) Small Talk (film) 70 mm Grandeur film Borrah Minnevitch Charles Ross Taggart Dinner Time Sammy Fain Sound Car-Tunes The Sidewalks of New York (cartoon) Una Merkel MOS (filmmaking)