Remove silence from audio

What removing silence does

The tool scans the recording and cuts every stretch that stays below the silence threshold, at the start, in the middle and at the end. What remains is joined into one continuous MP3. It is a quick way to tighten a lecture, an interview with long pauses, a voice memo with dead air, or a sample that starts with a second of nothing.

How to remove silence from audio

Drop the file above, set the Silence threshold and press Remove silence. The default is -40 dB. Anything quieter than the threshold counts as silence. FFmpeg's silenceremove filter does the cutting in your browser, and the result is saved as an MP3 at about 190 kbps.

Setting the threshold

Every quiet moment below the threshold is removed, including short pauses between sentences, so speech can sound rushed. If too much is cut, lower the threshold toward -50 or -60 dB so only true silence goes. If background noise keeps gaps from being removed, raise it toward -30 dB, or run Reduce Audio Noise first.

Before you start

Input: MP3, WAV, FLAC, M4A, AAC, OGG, OPUS, WEBM, and AMR. Output: trimmed MP3. The settings appear before anything runs, so you can check them first. Your original file is never changed.

Converting audio can change the codec, bitrate, channels, tags and length. Listen to the start and end of the result. Keep a lossless original if you may edit it again.

Keep the original until you have opened and checked the result. The work happens in this browser tab, so the size you can handle depends on your device's memory, your browser and the file itself.

Steps to remove silence from audio

1. Drop audio with silent gaps.
2. Pick the settings you want.
3. Press the action button, then download the trimmed MP3.