Audio Normalizer

Streaming services, podcast apps and broadcasters level audio by loudness, measured in LUFS, not by peak. The normalizer uses the same method, ITU-R BS.1770 as used by EBU R128: it weights the frequencies the ear is most sensitive to, measures in 400 ms blocks and ignores silence and very quiet passages.

The Control Panel shows the source loudness and peak as soon as the file loads, the gain your target needs, and, after you normalize, the loudness and peak of the result, so you can see exactly what changed.

Pick a preset and the target is set for you: Streaming at -14 LUFS for Spotify and YouTube, Podcast at -16 LUFS for Apple Podcasts and most podcast hosts, and Broadcast at -23 LUFS for EBU R128. Custom lets you choose anything from -30 to -8 LUFS in half-decibel steps.

Prefer to work by peak? Switch the mode to Peak and set a target from -6 to 0 dBFS. Peak mode moves the loudest sample to that level, which is handy when you only need headroom rather than a matched loudness.

Raising loudness can push the loudest moments past full scale, where they clip and distort. The normalizer applies one clean gain to the whole file and never lets the peak go above your peak ceiling, -1 dB by default and adjustable from -3 to 0 dB.

If a target needs more gain than the ceiling allows, the normalizer stops at the ceiling and tells you the loudness it reached. To get closer, lower the target or raise the ceiling. Nothing is compressed or limited, so the dynamics of your recording stay as they were.

The preview is the same player as the Audio Trimmer and Joiner: a waveform lane per channel, a level meter, frequency bars and a scrolling spectrum. After you normalize, switch between Original and Normalized and the player stays at the same moment, so you hear the difference on the same words or notes.

The export starts in your file's own format and quality, so a WAV stays WAV and an MP3 keeps a matching bitrate. WAV and FLAC are lossless; MP3, M4A, AAC and OGG are encoded once when you save.

The normalizer changes the overall level of one file and leaves its dynamics alone. To make quiet and loud parts closer together, or to remove noise, use the Audio Editor or the Noise Remover.

To cut a section first, use the Audio Trimmer. To combine several clips, use the Audio Joiner, normalizing any clip that is much louder or quieter before you join. To change only the format, use the Audio Converter.