EBU R 128: Loudness normalisation and permitted maximum level of audio signals
Source: https://tech.ebu.ch/docs/r/r128.pdf
Structured fields
{
"checked_at": "2026-10-17T00:00:00.000Z",
"usefulness": "The European broadcast recommendation for programme loudness normalisation (target -23 LUFS) and maximum true peak (-1 dBTP) using ITU-R BS.1770 measurement; the reference for delivery loudness of dialogue/music/effects mixes (version 5, November 2023).",
"source_type": "documentation",
"availability": "available",
"source_owner": "European Broadcasting Union",
"next_check_at": "2026-10-24T00:00:00.000Z"
}Evidence claims
- [sourced_fact] Document 'EBU R 128-2023' (EBU Recommendation, Geneva, November 2023); history: first published February 2010, V2 relative gate -10 LU, V3 June 2014 target level (-23 LUFS) tolerance +/-0.5 LU, V4 August 2020, V5 November 2023. · locator: cover page and document history source
- [sourced_fact] Recommends measuring average programme loudness for normalisation, using Maximum True Peak Level to check the upper technical limit, with Loudness Range, momentary and short-term loudness as further descriptors. · locator: recommendation text, programme loudness and true peak paragraphs source
- [sourced_fact] States the True Peak Level of a programme shall not exceed -1 dBTP during production, measured with a meter compliant with ITU-R BS.1770 and EBU Tech 3341, tolerance +/-0.3 dB; the signal shall generally be measured in its entirety. · locator: recommendation clause on maximum true peak level source
- [upstream_claim] Research review verdict at export: reviewed (as of 2026-10-17). Recorded by the research pipeline, not a hub review outcome; evidence.review stays unreviewed until an independent reviewer records one.
Rights
| component | license | hosting | redistribution | modification | training | Evidence and notes |
|---|---|---|---|---|---|---|
| documentation | unknown | unknown | unknown | unknown | unknown | Copyright/reuse terms of EBU technical publications were not read in the excerpt; unchecked. |