Trim Silence from Audio
Auto-cut silent gaps from podcasts and voice recordings.
Auto-cut dead air from podcasts, voice memos, lecture recordings, and Zoom calls. Drop the audio, set a silence threshold (in dB) and a minimum gap duration, and Dropvert removes every long silent stretch in one pass — no manual editing.
How it works
3-step walkthrough
How it works
3-step walkthrough
- 1
Drop the audio
Most common formats: MP3, WAV, FLAC, AAC, OGG, M4A, OPUS, AIFF.
- 2
Set the threshold and minimum duration
Threshold: how quiet a section needs to be to count as silence. −40 dB is a good default for speech recordings; lower values (−50 dB) only catch very quiet gaps, higher values (−30 dB) are more aggressive. Minimum duration: only silences longer than this get removed. 0.7 s is a balanced default; 0.3 s aggressively tightens; 1.5 s preserves natural pauses.
- 3
Trim and download
FFmpeg's silenceremove filter scans the entire audio, finds qualifying silences, and outputs a tightened version. Output format is configurable.
Why use Dropvert
Local-first, free, no upload required
Why use Dropvert
Local-first, free, no upload required
- Two simple knobs — threshold and duration — cover the full spectrum from "tighten dead air" to "compress every micro-pause."
- Browser-side. Works on private recordings without upload.
- Tested workflow: take a 60-min Zoom meeting, drop on this tool, output is typically 10–25% shorter with no perceived loss.
- Output format choice means you can take in MP3 and out as WAV without separate conversion.
Frequently asked questions
5 answered
Frequently asked questions
5 answered
- What threshold should I use?
- For voice recordings (podcasts, voice memos, lectures), −40 dB is a good default. For studio-quality recordings with very quiet noise floors, you can go down to −50 dB. For phone calls or noisy environments, −30 dB. The lower the value, the quieter a section has to be to count as "silence."
- What about preserving natural pauses?
- Set the minimum duration to a value larger than your typical sentence pause — usually 0.8–1.2 s. Pauses shorter than that stay intact, longer ones get tightened.
- Can it remove only the silence at the start and end?
- Not in v1 — the current tool removes silences anywhere in the file. To trim only edge silence, use Trim Audio (or set a very long minimum duration so only big gaps qualify).
- Will it cut into the speech?
- No. The threshold defines silence by audio level; sections above the threshold are always preserved. The cut points are at the start and end of each silent gap, not inside speech.
- Is my audio uploaded?
- No. The trim runs entirely in your browser via FFmpeg.wasm.
Related tools
4 suggestions
Related tools
4 suggestions