Background analysis
Silence detection and waveform drawing stay off the page main thread.
プライベートブラウザエディタ
オーディオから無音部分を削除する
録音、ポッドキャスト、音声メモ内の静かなギャップを自動的に検出し、視覚的な波形とローカル WAV エクスポートを使用してそれらを削除します。
アップロードなしMediaBunny Worker processingExport WAV, MP3, M4A, or FLAC
Natural joins
Padding is retained around cuts and tiny fades soften each join.
Choose your format
Download a lossless master or a smaller file ready to share.
ステップ1
録音を追加
ここに音声ファイルを 1 つドロップするか、デバイスを参照します。すべてローカルで処理されます。
Audio silence removal guide
Which audio formats are supported?
Read common MP3, WAV, M4A, AAC, FLAC, OGG, and Opus audio files. Decoding ultimately depends on the codec inside the file and browser support; export as WAV, MP3, M4A, or FLAC.
MP3
A common format for music, recordings, and sharing.
WAV
Uncompressed PCM for editing and preserving detail.
M4A / AAC
A practical fit for phone recordings, Apple devices, and efficient sharing.
FLAC / OGG / Opus
Useful for lossless archives or web and voice workflows.
How to remove silence from audio online
No install or upload is needed. This tool detects sustained quiet sections, draws the waveform, and makes a new file in a Worker in your current browser.
- 01
Add one audio file
Drop in a file or browse your computer or phone. It is never uploaded to a server.
- 02
Choose a detection preset
Speech/podcast keeps natural pauses; meeting/interview removes empty gaps more actively.
- 03
Fine-tune and review the waveform
A higher threshold finds more quiet sections. Minimum silence and padding help preserve short, natural pauses.
- 04
プレビューとダウンロード
Review the gray sections and projected time saved, choose an output format, and download the result.
一般的な使用例
Removing silence makes content more concise, but should not replace meaningful pauses. Keep the original file and listen to the exported result before publishing.
Podcasts and solo narration
Clean up thinking, page-turning, or recording gaps for a tighter speaking pace.
Meetings and interviews
Shorten long stretches with no speaker, equipment changes, or waiting.
Online courses and tutorials
Remove empty moments between explanations so learners can move through the material faster.
Voice notes and transcription prep
Reduce time without content before transcribing, editing, or sharing a recording.
Your file is processed only on your device
After you choose a file, MediaBunny reads, decodes, analyzes, and encodes it on demand in a browser Web Worker. Source audio is never sent to MediaKit servers; clearing the file, closing the page, or cancelling a job releases the Worker and local object URLs.
FAQ
Audio silence removal FAQ
私の音声ファイルはアップロードされていますか?
No. Detection and export happen in the browser on this device, so the file never leaves your device.
What do threshold, minimum silence, and padding mean?
Threshold defines how quiet a section must be. Minimum silence avoids cutting short pauses. Padding keeps a little time on each side of a cut so speech sounds more natural.
Why was no silence found?
Room noise may be above the current threshold. Move the threshold toward -15 dB or use a shorter minimum silence and try again.
Why is almost all audio removed?
The threshold may be too high or padding too low. Start again from the Speech/podcast preset, then adjust gradually.
Should I choose WAV, MP3, M4A, or FLAC?
Choose WAV or FLAC for more editing, MP3 for most sharing and uploads, or M4A for Apple and mobile playback. MP3 and M4A are lossy, so keep the source file.
Can I use it on a phone?
Yes. Use a recent browser, keep the page open for longer files, and leave enough free memory on the device.
オーディオを使い続ける
Related tools and tutorial
オーディオをトリミングする
Manually remove specific sections or set exact start and end points.
OpenNormalize audio volume
Balance a narration, podcast, or meeting recording after silence removal.
OpenFade audio
Add a smooth transition at the beginning, end, or a manual edit point.
OpenHow to remove silence from a recording
Learn about thresholds, speech pauses, and output formats.
Openまた必要になるかもしれません