Silence Remover
Long pauses and dead air make a recording feel slow. This tool scans the file, finds silent regions below a dB threshold, and trims them. Keeping the natural breaths and short pauses while cutting the awkward ones. Standard step in podcast and voiceover post-production.
How it works
Drop the recording
Podcast, voiceover, lecture, interview. Anything voice-heavy.
Up to 200 MB
Tune threshold and minimum duration
Threshold sets what counts as silence. -50 dB works for clean studio recordings. Drop to -40 dB if there's room tone or noise to ignore. Minimum duration controls which pauses get removed. Set 0.7-1.0 s to keep natural pacing; set 0.3 s to tighten aggressively.
ffmpeg filter: silenceremove
Process
ffmpeg makes two passes. One to trim leading silence, one to remove silences anywhere in the file longer than your minimum. Short pauses inside the threshold survive untouched.
Output: 16-bit WAV, trimmed duration
Tighten the pacing
Cut the dead air a podcast doesn't need
Long pauses make a recording drag. This scans the whole file, finds the silent stretches below your threshold, and removes them, keeping the natural little breaths that make speech sound human while cutting the awkward gaps that make it drag. It's the automatic pass every podcaster and voiceover artist does before publishing.
It won't eat your words
Set it right and soft consonants stay put
The whole trick is the threshold: keep it a good 6 to 10 dB below your normal speaking level and the tool only touches genuine silence, not the quiet tail of a word. If a soft consonant ever gets clipped, nudge the threshold lower and run it again. The minimum-gap setting also protects short pauses, so your delivery keeps its rhythm.
Automatic beats manual here
For dozens of pauses across an hour, this is the only sane way
Removing one or two gaps by hand is easy. Removing forty of them across a 60-minute episode by hand is an evening you'll never get back. This does the whole file by rule in one pass, and like everything on the site, it runs in your browser with no upload and no account.
Frequently asked questions
What threshold should I use?
It depends on the noise floor of your recording. Studio mic into an interface, treated room: -50 dB. Untreated room with HVAC noise: -40 dB. Phone mic or laptop mic: -35 dB. Lower numbers (more negative) = more aggressive. Quieter sounds get trimmed. Higher numbers (less negative) = more conservative.
Will it cut into my speech?
Only if the threshold is set higher (less negative) than the quietest parts of your speech. If you set -30 dB and a soft consonant happens to dip to -32 dB, that consonant gets cut. Safe practice: set the threshold 6-10 dB below your average speech level. Listen to the result; if soft words got chopped, lower the threshold.
Will it remove every pause?
No. The minimum duration parameter protects pauses shorter than the threshold. Set 0.5 s and any silence shorter than half a second is preserved; longer silences get removed. For tight, fast pacing use 0.3 s; for natural conversational pacing use 0.7-1.0 s.
Different from manual trimming?
Yes. Manual trimming (with the Audio Trimmer or a DAW) lets you decide each cut. Silence Remover is automatic. It processes the whole file by rules. For 1-2 cuts in a song, trim manually. For removing dozens of awkward pauses across a 60-minute podcast, automatic is the only practical option.
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Supports WAV · FLAC · MP3 · M4A · AIFF