How to Normalize Audio the Right Way
Updated October 2026
Normalising raises a file so its loudest peak reaches a chosen level. It is simple and safe, but peak normalising does not match how loud a recording sounds, so it is not the whole answer.
The short version
- Peak normalising sets the highest peak to a level; it does not set loudness.
- Loudness normalising matches the average level, which is closer to how we hear.
- Normalising to a peak below full scale leaves room for conversion.
- Use loudness for the final level, and peak normalising only as a safety step.
Peak normalising
Peak normalising raises the file until its loudest sample reaches a level you choose, often just below full scale. It changes the level by one amount for the whole file. It is simple, but two files normalised to the same peak can sound very different.
Loudness normalising
Loudness normalising measures the average level of the file, usually in LUFS, and sets it to a target. That matches how loud the file feels. For speech and music, it is the better choice for the final level.
A safe order
- Clean and repair the file first.
- Set the loudness to your target, so the average level is right.
- Check the true peak, and lower the level or limit the peaks if it is too high.
In Tunedzy
Match loudness sets a recording to a loudness target and checks the true peak. The louder without distortion guide covers the limits.
Normalise to loudness, check the peak
Tunedzy sets a file to a loudness target and checks the true peak, so it is level without clipping.
Free tools for this
Frequently asked questions
Does normalising improve sound?
It changes the level only. It does not make a recording better.
Is peak normalising bad?
Not bad, but it is only a level check. Loudness is the better target for speech.
Should I normalise before or after cleanup?
After. Clean first, then set the level.
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