Foley is the craft of performing everyday sounds to picture: footsteps, cloth, the clink of keys, a door that closes exactly when it should. It is one of the oldest tools in post-production, and done well it is invisible. Generating sound effects from a text prompt is a newer route to the same goal, where you describe the sound instead of performing it. Both put a convincing effect under your edit. They ask very different things of you to get there.
This is a fair comparison, not a takedown of either. Recorded foley gives you a real performance timed to your picture. Generated SFX gives you a fast take from a description without a room, a mic, or props. Here is how they line up.
Recording it vs prompting it
| What matters | Generated SFX | Recorded foley |
|---|---|---|
| How you get the sound | Describe it in a text prompt | Perform and capture it with a mic |
| Gear and space needed | None beyond the workspace | Props, mic, and a quiet room |
| Timing to picture | Place and trim the clip in your edit | Performed live against the footage |
| Realism of a real source | Synthesized to your description | A genuine physical performance |
| Iteration speed | Reword the prompt, regenerate, compare | Re-perform and re-record the pass |
| Repeatability | Regenerate variations on the same idea | Depends on props and performer on the day |
| Cost model | Per-generation on a plan, free tier to start | Time, gear, and often a foley artist |
| Best for | Cues with no easy source, fast turnarounds | Naturalistic, character-driven detail |
When each one wins
Record foley when the performance is the point. A character's footsteps that change weight as they cross a room, cloth that moves with the actor, the specific rhythm of hands working a prop, these carry a human timing that a real performer nails and an audience feels. If you have the room, the props, and the time, foley gives a naturalistic detail that is hard to match, and you control every nuance in the take.
Generate the effect when the source is impractical or the clock is short. A rock slide caving in, a laser charge-up, an owl pair calling across a valley, a dial-up handshake nobody keeps hardware for anymore. Some sounds have no easy prop, and some deadlines have no room for a recording session. Describing the cue and getting a take back in the edit is often the difference between shipping the moment and cutting around it. It is also a fast way to explore: try three wordings, compare the results, and keep the one that lands.
Plenty of finished tracks use both, with foley for the character detail and generated cues for the things you cannot practically record.
Hear a few generated effects
Storm from indoors
From Thunderstorm
Charge-up shot
From Laser gun
Pair calling
From Screech owl
Long sweep
From Whoosh
Where Morphic fits
Morphic generates original sound effects from a text description, so it covers the prompt-it side of this comparison. You describe the subject, texture, space, and length, and get back a clip you place and trim in your edit, unique to your project rather than a shared file. Audio models include ElevenLabs and Seed Audio, and the same workspace also covers music and voiceover, so effects sit next to your bed and narration. Generated effects are yours to use commercially on paid plans, subject to the terms. None of this replaces a good foley session when the performance is what sells the scene; it is the faster path when the source is impractical to record or the turnaround is tight.
FAQs
Neither is strictly better. Foley gives a real, human-timed performance that suits naturalistic and character work. Generated SFX is faster and needs no gear, which suits cues you cannot easily record or deadlines that leave no time for a session. Match the method to the shot.
No. Generated effects come from a text prompt, so there is no mic, room treatment, or props involved. You describe the sound, listen, adjust the wording, and regenerate until it fits. Foley, by contrast, needs a quiet space, a microphone, and the objects you are performing with.
For many cues they get very close, and for sounds with no practical source they are often the only option. A genuine physical performance still has an edge for the subtle, naturalistic detail of a character moving through a real space. Use foley where that nuance matters most.
Generation, usually. You can reword a prompt and compare several takes in the time it takes to reset props and re-perform a foley pass. That makes prompting a good way to explore options quickly, then commit to the take that works.
Yes, and many finished tracks do. Record foley for the character detail you want performed, and generate the cues that are impractical to capture, such as large events or synthetic sounds. Layered together in the edit, they cover more of the scene than either alone.