Swelling Unsettling Drone — free sound effect
6.0s · WAV & MP3 · ambience · 90 downloads · quality 9.5/10 · royalty-free, no attribution required
deeprumblingdarkswellingunsettlingdrone
About this sound
An AI-generated sound effect: “dark drone, deep unsettling sub rumble slowly swelling”. Quality-checked before listing, free for commercial and personal projects — videos, games, podcasts, apps and client work. No royalties and no attribution needed.
Editor's note (9.5/10): This clip is a near-perfect match for the brief, with no unwanted artifacts, delivering the exact slow-building unsettling deep sub rumble requested.
More deep sound effects
Need a different take on this sound?
Generate your own — freeEditing a video? BP Studio makes shorts, captions and B-roll from one upload — with this library built in.