A pre-recorded audio clip triggered by movement during the Halloween season adds an element of surprise and fear to decorations and displays. For example, a sensor detecting a trick-or-treaters approach might activate a spooky laugh, a bloodcurdling scream, or ghostly music.
The incorporation of such technology enhances the immersive experience, creating a memorable and potentially startling encounter. The technology draws upon a long history of theatrical sound effects designed to create atmosphere and elicit emotional responses. Its accessibility and affordability have made it a prevalent feature in both residential and commercial Halloween setups.