Sound Designer
Decides what a film sounds like and builds the effects, atmospheres and textures that carry it.
- Supervising sound editor (the credit that usually carries the same authority)
- Sound effects editor (SFX editor)
- Sound editor
- Track layer (UK post-house term)
- Audio designer
What they do
On a well-funded show the supervising sound editor starts before the shoot; on most, work begins at picture lock. It opens with a spotting session: watching the cut with the director, taking apart every line and every event, and settling what is naturalistic, what is stylised and what should not be there at all. Then the department is built and split between dialogue and ADR, effects, backgrounds and Foley. On animation there is no location track, so every sound exists because somebody decided it should. Days go in Pro Tools cutting against picture: pulling from libraries, recording originals, building one sound out of four unrelated ones, pitching, time-stretching and convolving elements into the right room. A single door needs a latch, a swing, a body and a space. Designing a creature or a vehicle means deciding what it is made of and what it wants. Track laying means filling the timeline so there are no accidental holes, running atmospheres across scene changes, and organising the session into pre-dubs a mixer can actually work with. There are ADR spots to attend, Foley sessions to cue, and conforms every time the cut moves after lock. Also the unglamorous part: watching a reel for the fourth time listening for one thing.
What they decide
The calls that belong to this role and no other.
- What the film sounds like: naturalistic, stylised, hyperreal, or nearly silent
- Which sound stands for each event on screen, and what it is built from
- What is deliberately absent, and where the track drops away entirely
- The track layout and pre-dub structure handed to the mix
- Which lines go to ADR and which are saved in the dialogue edit, agreed with the director
- The sound schedule and budget, on productions where they supervise
Principles of the craft
- Design for what the scene means, not for what is on screen: an effect's job is the audience's feeling about an event, not an inventory of it. A correctly recorded real punch sounds like almost nothing, which is why nobody uses one.
- Sound is the cheapest way to build the world outside the frame: what an audience hears off screen sets how big the world is. One distant train can do more for a location than a set extension.
- Contrast is the only loud there is: nothing sounds big unless something before it was small. Design the quiet and the drop-out first, then place the impact into the space you made.
- Layer by role, not by count: every element in a stack should be doing a specific job, whether that is attack, body, texture or room. Piling on more of the same makes mud, and a mixer can only turn mud down.
- Leave the mixer room: ten overlapping atmosphere tracks with no plan is not detail, it is a problem passed downstream. Deliver organised pre-dubs with headroom and legible intent.
- Everything competes with the voice: build effects and backgrounds with the dialogue's frequency range in mind, or they will simply be pulled down at the dub and the work will be inaudible.
Common mistakes
- Filling every moment, so there are no rests and nothing has anywhere to arrive
- Using a library file as-is because it is named correctly, without checking it against the picture's room and perspective
- Sync that is frame-accurate but feels late, because eye and ear expect impacts differently
- Mistaking loudness and low-end for impact
- Designing to a cut that has already changed, then conforming badly
- The competent designer's mistake: a beautiful, dense track that cannot survive a mix, with no headroom, no separation from dialogue and no version that is simply less
How to learn it
Exercises and routes in, not a reading list.
- Take a two-minute scene, strip all audio, and build it three times: once entirely from your own recordings, once entirely from library, once from a maximum of five sounds. Play all three to someone and ask which world felt biggest.
- Design one door: latch, hinge, body, room and the character's mood. Cut all four variants against the same picture and see which one changes how the performance reads.
- Take a busy action sequence and improve it only by removing sound. Find the version where the impacts land hardest and note how little is actually playing.
- Record ten household objects and use each for something it is not. Note which ones succeed because of texture rather than resemblance, which is most of them.
- Run atmospheres continuously across three scene changes, then break them at the cuts. Watch both with someone and ask them where the film changed location.
Some models now generate synchronised effects and dialogue with the picture, which is useful for previz, temp tracks and short-form work. That output is a finished blend rather than frame-accurate separated stems, so it does not replace a track lay that a mixer can balance, a broadcaster will accept, or a foreign-language version can be built from. Deciding what a scene should sound like, including where it should go quiet, is not the part that generation touches.
Tools and kit
- Avid Pro Tools sessions cut against picture with burn-in timecode
- Commercial and personal sound effects libraries
- Field recorders and microphones for original recording
- Pitch, time-stretch, granular and convolution reverb processing
- Spotting notes, ADR cue lists and Foley cue sheets
- Pre-dub stems delivered to the mix
- AAF and EDL conform tools for post-lock cut changes
Works with
- director
- editor
- re-recording-mixer
- production-sound-mixer
- composer
- assistant-editor
- animator
The models that touch this work
The parts of the directory relevant to post sound, rather than all of it.
Also in Post Sound
Dialogue Editor
Makes every line clear, consistent and continuous across cuts made from different takes.
Post Sound
Foley Artist
Performs every human-contact sound to picture, in sync, with props on a stage.
Post Sound
Re-recording Mixer
Balances dialogue, music and effects into the final mix and the stems every deliverable is cut from.
Post Sound