Noun
an effect that imitates a sound called for in the script of a play
Source: WordNetAdding a sound effect, Lynch used a broken Uher tape recorder to record the sound of his baby daughter Jennifer crying, creating a distorted sound that Lynch felt to be particularly effective. Source: Internet
But what is now a sound effect as famous a lightsaber swoosh was almost something much different. Source: Internet
Foley is more of a technique for creating sound effects than a type of sound effect, but it is often used for creating the incidental real world sounds that are very specific to what is going on onscreen, such as footsteps. Source: Internet
Even when special effects were not indicated in the score, if an organist was playing a theater organ capable of an unusual sound effect, such as a "galloping horses" effect, it would be used for dramatic horseback chases. Source: Internet
Cue list sequencing is used to trigger dialogue, sound effect, and music cues in stage and broadcast production. Source: Internet
Each of these sound effect categories is specialized, with sound editors known as specialists in an area of sound effects (e.g. a "Car cutter" or "Guns cutter"). Source: Internet