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Loudness Normalization (LUFS)

Adjusting an audio track's perceived loudness to a standard target, measured in LUFS.

Loudness normalization adjusts an audio track's perceived volume to a standard target, measured in LUFS (Loudness Units Full Scale) — a unit that reflects how loud audio actually sounds to human hearing, unlike raw peak amplitude. Streaming platforms and broadcasters each target a specific LUFS level so content doesn't jump wildly in volume from one video to the next.

For a video with both a voiceover and a music bed, normalization is also what keeps the two in a sane relative balance rather than one drowning out the other.

See also: Audio Ducking, Waveform.

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Frequently asked questions

LUFS (Loudness Units Full Scale) measures perceived loudness the way human hearing experiences it, rather than raw peak amplitude, and is the standard unit broadcasters and streaming platforms target.

Without it, a voiceover recorded quietly and a music bed exported hot can clash, or a video can sound noticeably louder or quieter than everything else on the platform it's published to.

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