Automatically finds and cuts out quiet gaps — dead air, long pauses, recording room tone — while leaving a small natural gap so cuts don't feel jarring.
Remove Silence from Audio finds the quiet gaps in a recording and shortens or deletes them — tightening interviews, lectures, voice notes and screen-recording narration without editing by hand.
You see the detected silences on the waveform before you apply anything, and a “leave this much pause” setting keeps a short natural gap so speech does not sound rushed.
Level is measured in 10 ms RMS windows across all channels. A gap starts when the level falls below the threshold and ends only when it rises 3 dB above it (hysteresis, so noise riding on the threshold does not chop the detection into pieces). Gaps shorter than your minimum are ignored. Each remaining gap is shortened to your chosen pause length — half kept at each side — and the two sides are joined with a 6 ms equal-power crossfade.
Take out long pauses and dead air.
Save minutes on recorded classes.
Make a rambling memo concise.
Tighten voice-overs to fit video.
| Detection | 10 ms RMS, 3 dB hysteresis |
|---|---|
| Threshold | −80 to −20 dBFS |
| Minimum gap | 0.1–3 s |
| Join | 6 ms equal-power crossfade |
Not if you leave a short pause; removing all silence sounds breathless.
Yes — raise the minimum silence length.
It only removes gaps at or below your threshold for at least the minimum duration you set, so brief natural pauses in speech are normally left alone — raise the minimum gap slider if it feels too aggressive.
-40dB is a reasonable default for most voice recordings. If it's cutting too much (or too little), nudge the threshold down (more sensitive) or up (less sensitive) and check the live gap count.
It removes every gap that meets your threshold and minimum-duration settings, including internal gaps — not just the start and end. For trimming only the leading/trailing silence, use the dedicated Trim Silence tool instead.
This tool runs entirely in your browser using the Web Audio API. Nothing is uploaded, stored or shared — there is no server to send your file to, so it works offline once the page has loaded.
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