Word sound effects
Put a sound on a word, not on a timeline.
Twelve synthesised effects across four groups, attached to a word rather than to a moment on a timeline.
LumaCaption can attach one of 12 sound effects to an individual word in the transcript — the effect fires on that word’s own timing and is mixed into the exported audio, so there is no separate audio track to keep in sync when the edit changes.
Adding a whoosh to a word in a normal editor is a five-step job: find the sound, drop it on an audio track, drag it to the right frame, adjust the level, and redo all of it the moment you trim two seconds off the front of the clip.
The premise here is different. The sound belongs to the word, not to a point in time. Click the word, pick the effect, and it fires whenever that word is spoken — including after you cut, split or ripple the edit, because the word carried its sound with it.
Attached to the word
Trim the clip, split it, ripple the edit — the effect moves with the word rather than staying where a timeline marker was.
Twelve effects, four groups
Tap (Pop, Tick, Thock, Blip), Sweep (Swish, Whoosh, Riser), Hit (Impact, Sub drop, Zap) and Shine (Ding, Sparkle).
Synthesised, not sampled
Every effect is generated rather than loaded from a sample library — no download, no licensing question, and nothing to go missing.
Sweeps lead the word
The sweeps start before the word so the build lands on it. A riser leads by roughly six-tenths of a second; a whoosh by about a seventh.
The twelve, and what each is for
The groups are ordered by how much attention they take. Taps are almost subliminal punctuation; hits are events you should use two or three times in a video, not twenty.
- Tap
- Pop — a bubble, the default word tick. Tick — a dry click, almost subliminal. Thock — a wooden keycap. Blip — a retro game beep.
- Sweep
- Swish — a short pass of air. Whoosh — a full sweep into the word. Riser — a one-second build, for a reveal.
- Hit
- Impact — a cinematic boom. Sub drop — a deep drop, headphones only. Zap — an electric snap.
- Shine
- Ding — a bright bell. Sparkle — three climbing glints.
Restraint is the whole technique
Sound effects on words follow the same curve as emoji: the first one is a beat of delight, the fifth is noise, and the tenth makes a video feel cheap. A thirty-second clip can carry two or three effects. Not ten.
The pattern that holds up is one sweep leading into the hook, one hit on the single most important claim, and nothing else. If you find yourself wanting an effect on every third word, what you actually want is a word-by-word caption style — the motion does that job without touching the audio.
Levels are set per effect rather than left at a uniform gain, which is why the sub drop sits lower than the impact even though it feels heavier: it is doing its work in a frequency range that phone speakers cannot reproduce and headphones exaggerate.
How it works
Caption the clip
Every word gets its own timing. The video file is never uploaded.
Click a word, pick a sound
Twelve effects across four groups. The effect attaches to the word and fires on its timing.
Export with the mix baked in
Effects are mixed into the exported audio. Exports are free and unlimited on every plan.
Common questions
How many sound effects are there?
Twelve, in four groups: Tap (Pop, Tick, Thock, Blip), Sweep (Swish, Whoosh, Riser), Hit (Impact, Sub drop, Zap) and Shine (Ding, Sparkle). All twelve are synthesised rather than loaded from a sample library, so there is nothing to download and no licensing question.
What happens to the effect if I trim the clip?
It moves with the word. The effect is attached to a word in the transcript rather than to a point on a timeline, so trimming, splitting and ripple edits all keep it in the right place — which is the specific failure this design exists to avoid.
Do the effects end up in the exported file?
Yes, mixed into the exported audio. There is no separate stem to hand off or keep in sync.
How many should I use in one video?
Two or three in a thirty-second clip. Sound effects follow the same curve as emoji — the first is a beat of delight and the tenth makes the video feel cheap. If you want something on every few words, use a word-by-word caption style instead; the motion does that job without touching the audio.
