LUFSbaby
ITU-R BS.1770-4
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Loudness
Integrated
Average loudness over the whole track. The number platforms use to normalize playback.
Loudness Range
Difference between quiet and loud sections. Bigger = more dynamic.
Short-term Range
Where the loudest and quietest sections of your track actually sit. The chorus vs. verse read.
True Peak
Highest peak including between-sample peaks. Your ceiling for avoiding distortion after lossy encoding.
Sample Peak
Highest raw sample value. Doesn't catch inter-sample peaks.
RMS
Average signal power (unweighted). Rough feel for perceived level.
Crest Factor
Peak minus RMS. High = punchy/dynamic, low = squashed/limited.
Dynamic Character
PSR (peak-to-short-term-loudness) classification. Higher = more open, lower = more compressed. Independent of loudness.
Master Condition
Plain-language read on the state of your master based on integrated LUFS. Ready to Ship is the target; extremes on either side read as unfinished.
Integrated Loudness
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Master Condition
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Dynamic Character
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Loudness Range
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Short-term Range
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True Peak
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Sample Peak
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RMS
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Crest Factor
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vs. Platform Targets
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