Make a quiet recording louder, turn a loud one down, or bring a whole batch to the same level. A limiter keeps boosted peaks from crackling, you can preview first, and nothing is uploaded.
Boost, lower or match the loudness of one file or a batch. Edit in editor carries your settings onto the timeline.
Batch keeps its settings and results when you switch modes. Interactive Editor opens original audio; Edit in editor also carries the selected settings. Save a project to keep tracks editable. Export a recipe to reuse a composition in either workflow mode.
The editor supports 20 audio sources, 50 MB each, 150 MB total and 15 minutes per source, with a 30-minute composition. Batch retains its existing limits. The final editor mix uses a peak limiter; heavily boosted Trimmer cuts can sound different from Batch’s clipping.
Add the 40-second practice WAV, choose Louder or quieter and −6 dB. Choose WAV, use Preview 10 seconds and click Change volume of 1 file.
The result should remain about 40 seconds long with the same tone pattern at a lower level. Compare the original and result with the player and your device volume unchanged. A −6 dB change roughly halves the signal amplitude; it does not imply half the perceived loudness.
For a quiet real recording, try +3 dB first and check the row’s peak-limiting note. Large boosts can sound squashed and also amplify background noise.
Clearly louder. About +10 dB sounds roughly twice as loud, and −10 dB about half as loud. Small steps of 1–3 dB are enough to match two files that are nearly the same.
Digital audio has a ceiling, and a boost that pushes peaks past it would crackle. Here a limiter lowers the level just around those peaks so they stay under −1 dB, and each row says how much it will hold back. A very large boost on a recording that is already loud can still sound squashed; choose a smaller change or Maximize.
Even out matches perceived loudness (LUFS). Maximize adjusts each file from its measured peak toward −1 dB without limiting; it can lower loud files and caps boosts at +40 dB. Silence is unchanged, and very quiet audio may stay below the target.
No. Measuring, the volume change and encoding all run in your browser. Encoder code is downloaded from this site the first time a format needs it; your audio never leaves your device.
Guides, common conversions and useful next steps.
Arrange clips, mix tracks and add fades on a local timeline.
Use the action beside a finished result to send it directly, or open another tool: