Free Online Audio Noise Reducer tool icon
Audio noise reduction • FFmpeg.wasm local processing

Free Online Audio Noise Reducer

Free online audio noise reduction tool using ffmpeg.wasm frequency-domain filter (afftdn). Adjust noise reduction strength and export as WAV/MP3, all processed locally in your browser.

Select Audio File

Tip: First time loading ffmpeg.wasm requires downloading core files (large) and may take some time. All processing is done locally in your browser with no uploads.

Idle
Noise Reduction Settings
Download
FFmpeg Logs

How to Use

  • Click "Select File" to upload the audio you want to clean.
  • Click "Load FFmpeg" to initialize the core component (first time only).
  • Adjust the "Noise Reduction Strength" (default 55%) in settings.
  • Click "Start Noise Reduction" to process. Use "Preview" to check results.
  • Click "Download" to save the cleaned audio file.

Tips

  • Uses FFmpeg afftdn filter. All processing is local and private.
  • Start with lower strength values; too high may distort speech.