LUFS in one sentence
LUFS is a perceived loudness scale: it answers how loud the whole track feels to a listener, not just how high its digital peaks are.
A DAW peak meter mainly tells you whether the signal is approaching 0 dBFS. LUFS measures weighted average energy according to the ITU-R BS.1770 standard family. Two tracks can share the same sample peak and still feel radically different in loudness.
Integrated, Short-Term and Momentary LUFS
Integrated LUFS is the main mastering number because it describes the loudness of the whole file or programme. This is the value usually compared against a target, such as -14 LUFS for a conservative streaming master or around -9 LUFS for a loud modern CD or genre-specific release.
Short-Term LUFS uses roughly 3-second windows. It helps reveal whether a chorus actually lifts, whether a verse drops too far, or whether a drop is only visually impressive.
Momentary LUFS reacts faster, around 400 ms. It is useful for observing short energy jumps, but it should not decide the whole master on its own.
Why streaming changed loudness decisions
Streaming platforms use loudness normalization so listeners do not need to adjust volume between tracks. Spotify states that its normal setting adjusts playback to about -14 dB LUFS using the ITU 1770 standard and recommends keeping masters below -1 dBTP.
This does not mean every master must be -14 LUFS. Loud rock, metal, hip-hop or club music can be louder if the genre calls for it. The point is different: a -8 LUFS master is likely to be turned down, so extra limiting may not buy loudness advantage and can cost transients, punch and musical breath.
Common LUFS mistakes
A simple pre-release workflow
- Check Integrated LUFS for the full track, not only the loudest section.
- Compare Short-Term LUFS between verse, chorus and drop.
- Leave True Peak headroom, especially when the master is louder than -14 LUFS.
- Compare against a genre reference after loudness matching.
- Make the final decision by listening: LUFS is a decision tool, not a substitute for taste.
Aumixys shows Integrated, Short-Term and Momentary LUFS together with True Peak, Sample Peak, LRA and Auto-QC diagnostics, so you can see whether the real issue is loudness, an inter-sample peak, or excessive limiting.