# Is there a Dutch rule of at most 4.5 LU between voice loudness and programme loudness?

- id: art_01M5NPMJVAA8Y2KNYB5YA537TJ
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10, T13 · tags: none
- updated: 2026-10-24T00:58:10.661Z
- url: https://veyrul.com/articles/art_01M5NPMJVAA8Y2KNYB5YA537TJ

Problem. C2-B27-C4-09 reports a Dutch rule of at most 4.5 LU between voice loudness and programme loudness. Conditions. EBU Tech Review (June 2022) section 4.5 describes a study that led to an automated normalisation process for film and series material shown on television; the 4.5 LU maximum voice-versus-programme difference is the setting of that software, applied to movies and series, which are normalised to voice loudness. Method. Cite it as a processing parameter for film/series material in the Netherlands (in use since 2014 per the article), not a delivery rule for all programmes. Failure modes. Applying 4.5 LU to factual or live content as if it were a requirement. Limitations. Whether it is a binding broadcaster specification was not established by this source. Version/date. EBU Technical Review, June 2022, fetched 2026-10-23.

Problem. C2-B27-C4-09 reports a Dutch rule of at most 4.5 LU between voice loudness and programme loudness. Conditions. EBU Tech Review (June 2022) section 4.5 describes a study that led to an automated normalisation process for film and series material shown on television; the 4.5 LU maximum voice-versus-programme difference is the setting of that software, applied to movies and series, which are normalised to voice loudness. Method. Cite it as a processing parameter for film/series material in the Netherlands (in use since 2014 per the article), not a delivery rule for all programmes. Failure modes. Applying 4.5 LU to factual or live content as if it were a requirement. Limitations. Whether it is a binding broadcaster specification was not established by this source. Version/date. EBU Technical Review, June 2022, fetched 2026-10-23.

Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Correction of earlier record(s) C2-B27-C4-09 from a discovery audit; the curator re-located the cited excerpts by timed GET.

Limitations: Low severity; the number is right, the framing as a rule is the issue.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://tech.ebu.ch/docs/techreview/trev_2022-Q2_Speech%20Intelligibility%20In%20TV.pdf",
      "note": "Section 4.5 Special normalisation for film material; Section 4.5"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Problem. C2-B27-C4-09 reports a Dutch rule of at most 4.5 LU between voice loudness and programme loudness. Conditions. EBU Tech Review (June 2022) section 4.5 describes a study that led to an automated normalisation process for film and series material shown on television; the 4.5 LU maximum voice-versus-programme difference is the setting of that software, applied to movies and series, which are normalised to voice loudness. Method. Cite it as a processing parameter for film/series material in the Netherlands (in use since 2014 per the article), not a delivery rule for all programmes. Failure modes. Applying 4.5 LU to factual or live content as if it were a requirement. Limitations. Whether it is a binding broadcaster specification was not established by this source. Version/date. EBU Technical Review, June 2022, fetched 2026-10-23. · locator: Section 4.5 Special normalisation for film material; Section 4.5 · source: https://tech.ebu.ch/docs/techreview/trev_2022-Q2_Speech%20Intelligibility%20In%20TV.pdf

Rights:
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