AI Sound Effect Generator
The sound you need, described rather than hunted for. Footsteps on wet gravel, a distant train, a soft interface tick — generated at the length the cut leaves for it.
- Foley, ambience, impacts, interface sounds
- Generated to a specific duration
- Variants of the same sound
- Same library and credits as your video
How to generate a sound effect
Sound design prompts are physical descriptions. What is making the sound, out of what, how hard, and in what space — those four facts get you most of the way.
- 01
Describe the source and the material
'A heavy wooden door closing', not 'a door'. Material and weight decide what the sound actually is far more than the object's name does.
- 02
Describe the space
The same handclap in a bathroom, a hall, and a field are three different effects. Naming the room is the fastest way to make a generated sound match footage that was shot somewhere specific.
- 03
Generate a few and place them
Sound effects are cheap to run and judged in context. Generate two or three, drop them under the frame they belong to, and keep the one that disappears into the picture.
Why generate instead of searching a library
The exact sound, not the nearest one
Library searching is a compromise: you take the closest of what exists. A description gets you the specific thing, including sounds no library bothered to record.
Cut to length
Ask for the duration the shot needs so the effect does not have to be trimmed with a fade that announces itself.
Variants without repetition
Six slightly different footsteps rather than one file used six times — which is the tell that gives away a cheaply-tracked scene.
Ambience beds
Room tone and outdoor atmosphere generated to sit under a whole scene, which is what makes generated footage feel like it was shot somewhere.
Interface and motion sounds
Ticks, whooshes, and confirmations for product video and motion graphics, generated to a house feel rather than borrowed from a pack.
No licensing to track
Generated under your plan, with the same commercial terms as everything else you make here.
What people generate
Foley for generated footage
Steps, cloth, handling, and impacts, so an AI-generated clip stops sounding like silent footage with music over it.
Ambience
Street, office, forest, or room tone under a scene, which does more for believability than any single effect.
Product and UI
Motion-graphic whooshes and interface confirmations tuned to a brand's feel.
Transitions
A sound to carry a cut, generated to the exact frames the transition occupies.
Games and prototypes
Placeholder and final effects for interactions, generated in sets so nothing repeats audibly.
Accessibility and clarity
Distinct, non-fatiguing cues for states that need to be understood without looking.
Sound is where generated video stops looking generated
Picture gets the attention, but an audience judges realism largely with its ears. A clip of a street with no traffic hum, no footsteps, and no room tone reads as artificial even when every frame is convincing — because real recordings are never silent. Adding a bed of ambience and two or three specific effects usually does more for a generated scene than another round of prompting the picture.
The craft is in layering rather than in any single sound. A door closing is a handle, a swing of air, a thud, and the room responding to it. Generating those separately and stacking them gives a result with depth that one prompt asking for 'a door closing' rarely reaches, and it lets you tune the parts independently when the shot changes length.
Variation matters as much as accuracy. Human ears notice repetition immediately: the same footstep file four times in a row is heard as a loop even by people who could not say why. Generating a handful of near-identical takes and alternating them is the standard fix, and it is cheap when each one costs a few credits rather than a recording session.
Finally, place before you judge. A sound effect auditioned alone is almost always too loud, too long, and too detailed for where it is going. The good one is usually the plainer of two candidates once it is sitting under the picture at the level it will actually play at.
AI sound effects FAQ
- How long can an effect be?
- Short effects and longer ambience beds are both supported; the available durations are shown in the form. Generate ambience at scene length and impacts at shot length.
- Can I generate several takes of one sound?
- Yes, and you should. Running the same prompt a few times gives you the variation that stops a repeated effect from sounding like a loop.
- Can I match sounds to a specific room?
- Describe the space in the prompt — its size, its surfaces, and whether it is indoors. That has more effect on the result than any post-processing you would apply afterwards.
- Can I use them commercially?
- Yes, under the terms of service, on a paid plan — the same terms as generated video, images, and music.
- Is it free?
- Yes, within your free credits, from the same balance as the rest of the studio.
Where to go next
Describe one sound and drop it under a shot
Free credits on sign-up, effects generated to length, and one library for picture and sound.