Audio effects — free online tool

Audio effects in the browser: set volume from 0 to 200 percent, add equal fade-in and fade-out ramps, or shape tone with four EQ presets.

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What to know

The effects tool groups the three adjustments that change how a finished recording sounds without changing its length: Volume, Fade and Equalizer. It reads MP3, WAV, M4A, AAC, FLAC, OGG, Opus and WebM audio and exports MP3, M4A or WAV.

Volume is a single slider from 0 to 200 percent, applied as a straight multiplier. Fade takes one duration in seconds, from 0.1 upward, and uses it for both the fade-in at the start and the fade-out at the end. Equalizer offers four presets: Balanced, Voice clarity, More bass and More detail.

Choose by symptom. A recording that is simply too quiet needs Volume. A clip that starts or stops with a click needs Fade. A voice that sounds boxy or a track that feels thin needs the Equalizer. Restoring a noisy room recording is outside what these three can do.

The effects are applied one per export, so a polished file can take two or three passes. Run Equalizer first, Volume second and Fade last, and export the in-between files as WAV so only the final MP3 or M4A loses anything.

Duration never changes here. If the file also needs to be shorter or faster, send it through the trimmer or the speed changer first.

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How to use Audio effects — free online tool
  1. Load a recording and select the effect you need: Volume, Fade or Equalizer.
  2. Set its value, for instance 140 percent, a 2-second fade, or the Voice clarity preset.
  3. Choose the export, WAV for another pass or MP3 at 192 kbps for the final one.
  4. Process, listen to the preview and download; reload the result to stack another effect.

Quick answers

Do the effects change how long the file is?

No. Volume, Fade and Equalizer leave the duration exactly as it was.

Can I apply volume and fade in one export?

Not in one export. Apply one effect, export, reload the file and apply the next.

What order should I use for several effects?

Equalizer, then Volume, then Fade. Boosting tone raises peaks, so set the level after it, and add the fade last so it sits at the end.

Does this tool remove background noise?

No. It adjusts level, ramps and tone only, and has no noise reduction.