Sound design vocabulary names simple ideas: a stinger is a short sharp accent, a riser builds tension toward a moment, ambience is the continuous background of a place, and foley is everyday sound performed in sync with the picture. Knowing the words makes it far easier to brief a cue or read a spotting note.
Every term below is defined in plain language, with a note on when it is used.
Core terms
Sound effect (SFX). Any audio element in a scene that is not dialogue or music: a door, an impact, weather, a UI beep. Effects fill in the events and world of a scene, and they can be recorded, performed, or generated from a description.
Foley. Everyday sounds performed live in sync with the picture, named after Jack Foley. A foley artist recreates footsteps, cloth movement, and prop handling to the frame, giving a scene its continuous human texture rather than its dramatic hits.
Ambience (atmos). A continuous background sound that establishes a place: room tone, a forest, a busy street, ocean waves. Ambience is what makes a location feel real and inhabited even when nothing dramatic is happening. It usually sits low under everything else.
Bed. A layer laid down as a foundation for others to sit on, often an ambience or a sustained tone that runs under a scene or sequence. A "sound bed" holds the space together while shorter, sharper elements come and go on top of it.
Hit (impact). A short, strong, single sound marking a moment of force or emphasis: a punch landing, a heavy door slamming, a title card striking the screen. Hits are among the most common effects to generate because they are discrete and precise.
Stinger. A brief, sharp musical or sound accent that punctuates a moment, often a sudden reveal, a scare, or a logo. A stinger is short and designed to grab attention, sitting somewhere between a sound effect and a musical gesture.
Riser. A sound that builds in pitch, volume, or intensity toward a peak, used to create tension before a drop, a cut, or a reveal. Risers are staples of trailers and transitions, pulling the listener forward into whatever lands next.
Whoosh (swish). A sweeping air or motion sound used mostly for transitions and moving objects, with a soft onset and a moving tone. Whooshes carry the eye from one shot or element to the next and are one of the most requested transition effects.
Sweetener. An extra sound layered onto an existing element to enrich it without being noticed on its own. A gunshot might get a low sub-layer and a metallic tail as sweeteners, so the whole reads bigger and more specific than any single recording.
Transient. The very short, sharp burst at the start of a sound, the attack. Transients give effects their snap and clarity, which is why clicks and impacts feel crisp or dull depending on how the transient is preserved.
Diegetic sound. Sound that exists within the story world and that the characters could hear: a radio playing in the room, footsteps, a passing car. It grounds the audience inside the scene.
Non-diegetic sound. Sound that sits outside the story world, added for the audience only, such as a score, a narrator, or a stinger on a title. Characters cannot hear it, and it speaks directly to the viewer.
Spotting. The process of watching a cut and deciding exactly where each sound or music cue should go. A spotting session produces the list of cues the editors and composer then create, and "spotting notes" are the shorthand you translate into actual sounds.
Sound design. The craft of creating and shaping sounds for a project, especially sounds that do not exist in the real world or need to be built from layers. A sound designer invents the creature, the spaceship, or the magic and makes the whole soundscape feel intentional.
Sync. Aligning a sound to the exact frame of the action it belongs to, so a slam lands with the door and a footstep lands with the foot. Good sync is what makes an added effect feel like it was captured on set.
Mix. The final balancing of every audio element (dialogue, music, and effects) in level, space, and tone so they sit together clearly. The mix is where individual sounds become one coherent soundtrack rather than a pile of competing clips.
How generation maps onto these terms
Most of the terms above name a role a sound plays, and generating from a text prompt is simply another way to fill those roles. You can describe an ambience, a hit, a riser, a whoosh, or a sweetener in words, generate it on Morphic with models such as ElevenLabs and Seed Audio, and download the take that fits. Naming the role in your prompt, "a tense riser building over three seconds" or "a low ambience of a quiet office," tends to produce a more usable result than a vague description. To hear how these categories sound in practice, browse the Morphic sound library.
Tips for using the vocabulary
- Use the right word in a brief. Asking for a "stinger" or a "riser" tells a collaborator far more than "a sound here."
- Separate the role from the source. A hit can be recorded, performed as foley, or generated. The role is what the scene needs; the method is how you get it.
- When you prompt a generator, lead with the role and then add the subject, texture, space, and length so the result is specific.
Three of these terms, played
Definitions get you most of the way. For the three that people mix up most often, hearing them settles it.Stinger
0:02A short sharp accent on a reveal. Sits between a sound effect and a musical gesture.
Riser
0:03A build toward a peak. It creates the expectation that something is about to land.
Every term here can be filled with a generated cue. The stingers, risers and whooshes pages each open in Studio with a working prompt already in the box.
FAQs
Sound effects, in the common usage, are discrete audio elements you find, place, or generate, such as impacts, weather, and interface sounds. Foley is a specific practice within effects: performing everyday sounds like footsteps and cloth movement live in sync with the picture. All foley is effects work, but not all effects are foley, and the two are made in very different ways.
Diegetic sound exists inside the story world and could be heard by the characters, such as a passing car, a ringing phone, or music from a radio in the scene. Non-diegetic sound is added for the audience only and sits outside the story, like a film score or a narrator. The distinction matters because it changes how a sound should feel and where it belongs in the mix.
A riser builds in pitch, volume, or intensity toward a peak, and it is used to create anticipation before something lands: a cut, a reveal, a drop, or a title. You hear them constantly in trailers and transitions because they pull the viewer forward and make the moment after them feel earned. You can generate one by describing the build and its length.
A bed is a foundational layer, usually an ambience or a sustained tone, that runs underneath a scene while shorter, sharper sounds come and go on top. It holds the space together and keeps a sequence feeling continuous. Think of it as the floor the rest of the sound design stands on.
A sweetener is an extra layer added to an existing sound to make it richer or more specific without being noticed on its own. A single impact might get a low sub-layer and a metallic tail as sweeteners, so the combined result reads bigger and more detailed than any one recording. It is a core habit of layered sound design.
Most of these terms describe a role a sound plays, and Morphic lets you fill that role by describing it. You can prompt an ambience, a hit, a riser, or a whoosh, generate an original effect, and download it for your edit. Naming the role in your prompt helps the result land. The same workspace also covers music and voiceover, and on paid plans the effects are yours to use commercially, subject to the terms.