Adjust Audio Volume
Adjust gain, normalise loudness, or limit peaks.
How to adjust audio volume
- Add one or more audio files.
- Choose gain, LUFS normalisation, or peak normalise.
- Apply the limiter if you are boosting, then download.
About this tool
Audio volume problems come in two forms: the whole file is too quiet or too loud, or the level varies within the file. Manual gain handles the first case — you know the file is 6 dB too quiet, you add 6 dB. LUFS normalisation handles both cases when you do not know the target offset or need to match multiple files to a consistent standard for publication.
The limiter matters when boosting. Adding +12 dB of gain to a quiet recording will almost certainly push some peaks above digital full scale, producing hard clipping — a particularly unpleasant distortion that sounds like crackling. A true-peak limiter intercepts those peaks before they clip and attenuates them just enough, preserving the dynamics of the rest of the signal.