Radio sweeper
A radio sweeper is a short, pre-recorded sample used by radio stations as segues between songs that give listeners a brief station identifier or promo, generally 20 seconds or less: "You're listening to the soft sounds of radio. Easy listening throughout the Bay Area," for example.
Dry radio sweepers are voice only—no music or sound effects—whereas wet sweepers generally contain sound FX
Sweepers are also known as liners, bumpers, radio imaging, sweeps, station imaging, stingers, IDs, idents, promos, shotguns and intros. Most sweepers will have a voice over included on the audio.
