Sound Effect | Theatrical Production | Britannica

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• Theatrical Sound Designers and Composers Association - History of Sound in Theatre

sound effect theatrical production Ask Anything Homework Help Also known as: SFX Written and fact-checked by Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Britannica Editors History Britannica AI Ask Anything Table of Contents Table of Contents Ask Anything

sound effect, any artificial reproduction of sound or sounds intended to accompany action and supply realism in the theater, radio, television, and motion pictures. Sound effects, sometimes shortened to SFX, have traditionally been of great importance in the theater, where many effects, too vast in scope, too dangerous, or simply too expensive to be presented on stage, must be represented as taking place offstage. A battle, for instance, can be simulated by such sounds as trumpet blasts, shouts, shots, clashing weapons, and horses’ hooves. Certain dangerous effects, such as explosions, crashes, and the smashing of wood or glass, must also take place offstage. Sound effects must often be coordinated with actions on stage; when the hero pretends to punch the villain on the jaw, a sound technician backstage must provide a realistic “smack!”

Many ingenious methods have been devised for the faithful reproduction of various sounds; wind sounds, from a breeze to a hurricane, can be simulated when a piece of canvas is rubbed by wooden slats mounted on a revolving cylinder; thunder is imitated by shaking a large sheet of metal; rain sounds are produced by rattling dried peas in a wooden box; horses’ hooves can be imitated by clattering coconut shells or suction cups against a hard surface; gunshots can be produced by slapping boards together or by firing blank cartridges.

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Today most sound effects are recorded digitally, which provides greater realism and allows for the production of an almost limitless range of effects with no need of bulky sound-producing devices. In motion pictures, speaking dialogue and some ambient noises are captured during initial filming, but many sounds are added later, in postproduction. These may include stock sounds taken from a library, called “hard effects,” such as rain falling and traffic noise, or Foley sounds created by special technicians. Foley artists create and record sound to match onscreen action, such as footsteps or glass breaking.

More From Britannica radio: Sound effects The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Meg Matthias.