6 min read
Foley vs sound effects: two crafts that solve different problems
Footsteps are foley. A door explosion is an effect. The line matters because it decides who does the work and when.
Both fill the soundtrack with things that are not dialogue or music, but the methods are opposite. Foley is performed live to picture by an artist watching the cut. Sound effects are sourced or built, then edited into place.
What foley covers
- Footsteps, on the right surface, matching the walk of each character.
- Cloth movement, the layer that makes bodies feel physically present.
- Props: cups, keys, papers, weapons handled in shot.
- Specifics that only a human performance can sync convincingly.
What effects cover
- Vehicles, weather, machinery, crowds.
- Anything too large, too dangerous or too rare to perform in a studio.
- Designed elements that have no real world source.
- Ambiences and backgrounds.
Why foley still exists
Because library footsteps never match the performance. A limp, a hesitation, a change of surface halfway through a shot: a foley artist reproduces the rhythm of the actor, and that rhythm is what makes a character feel physically real. It is also essential for international versions, where the M and E mix must work without the original dialogue.
What to do on a small production
Record your own foley in a quiet room with a single cardioid microphone close to the source. Perform to picture rather than cutting individual steps: the timing errors of a live pass read as human, while grid perfect cut steps read as fake. Keep every pass on its own mono track.
Organising the material
Foley recorded on a multitrack recorder arrives as a multichannel file. Split it into named mono stems before editing, so feet, cloth and props stay separate all the way to the mix, and so your M and E stem can be built without rebuilding anything.