Why not just turn the volume up?

That does not work — the loud parts clip first and the sound breaks. So the loud parts are pushed down to narrow the range (evening out) and only then is everything raised (boosting). The other order distorts.

What is the “unevenness” number?

The gap between the loudest peak and the perceived loudness. A smaller number means the gap between the parts you could not hear and the parts that hurt has narrowed — it measures how even the loudness became.

Is stronger evening out better?

Speech usually takes strong settings well, but on music it also lifts breath and background noise until everything feels stuffy. Judge it with the waveform and your ears.

Which formats can I save as?

MP3 or WAV. The preview always plays lossless; the format is chosen when you download.

Why is the target level not 0?

Sitting exactly at 0 overflows on some playback devices and during conversion, which adds noise. Leaving a little headroom is safer.

Normalize audio volume

Name: 소리 크기 맞추기
Author: KarmoLab

Before/after waveforms · even out then raise · listen before saving · no upload

소리 크기 맞추기

들쭉날쭉한 녹음의 크기를 고르게 만듭니다. 전후를 파형과 숫자로 비교하고, 파일이 브라우저를 벗어나지 않습니다

음원이나 영상을 끌어다 놓거나 눌러서 고르세요

파일은 브라우저 안에서만 다뤄집니다 — 어디에도 올리지 않습니다.

Normalize the volume of a recording that jumps around. Compare before and after by waveform and by number; the file never leaves your browser.

How to use it

Add an audio or video file
Pick how even it should be, and the target level
Hit Normalize
Compare before and after by waveform and by ear
Download it as WAV

Common questions

Why not just turn the volume up?: That does not work — the loud parts clip first and the sound breaks. So the loud parts are pushed down to narrow the range (evening out) and only then is everything raised (boosting). The other order distorts.
What is the “unevenness” number?: The gap between the loudest peak and the perceived loudness. A smaller number means the gap between the parts you could not hear and the parts that hurt has narrowed — it measures how even the loudness became.
Is stronger evening out better?: Speech usually takes strong settings well, but on music it also lifts breath and background noise until everything feels stuffy. Judge it with the waveform and your ears.
Which formats can I save as?: MP3 or WAV. The preview always plays lossless; the format is chosen when you download.
Why is the target level not 0?: Sitting exactly at 0 overflows on some playback devices and during conversion, which adds noise. Leaving a little headroom is safer.

Other tools

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