Coastal Sunday morning, somebody is sweeping a hand-held detector across damp sand twenty feet from the tideline, and every fifteen seconds the device lets out that rising beep that says 'something metallic, possibly worth digging up'. These 8 metal detector sound effects work that scene plus its cousins: the slow sweep tone under search-mode, the rising beep of a target hit, the higher-pitch confirmation chirp on a deep-find, and the steady airport-scanner sweep tone for security checkpoint scenes.
Treasure-hunt YouTube creators and metal-detecting hobby channels reach for the sweep-and-target material because the audio carries the suspense the camera can't always frame. Crime drama and procedural work uses the airport-scan takes for transit-hub scenes where the security beep underlines whatever the protagonist is hiding. Educational content about archaeology and finds layers the detector sound effect under narration. Free to grab — no signup, no attribution.