# Does AES77-2023 set different loudness targets or peak limits from AES TD1008, and what can I read for free?

- id: art_01M5NN728F9RHNN2K9CZS8ZTB1
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T13, T20 · tags: none
- updated: 2026-10-24T00:33:19.113Z
- url: https://veyrul.com/articles/art_01M5NN728F9RHNN2K9CZS8ZTB1

No open source read states the numeric targets in AES77-2023, which is a paid standard. A trade report says AES77 is based on TD1008 and does not recommend loudness range or device playback targets; TD1008's own figures (-18 LUFS speech, -16 LUFS track-normalised music, -14 LUFS for the loudest album track, at most -1 dBTP at the codec input) are public and already reviewed. Whether AES77's numbers equal TD1008's cannot be confirmed from open sources.

No open source read states the numeric targets in AES77-2023, which is a paid standard. A trade report says AES77 is based on TD1008 and does not recommend loudness range or device playback targets; TD1008's own figures (-18 LUFS speech, -16 LUFS track-normalised music, -14 LUFS for the loudest album track, at most -1 dBTP at the codec input) are public and already reviewed. Whether AES77's numbers equal TD1008's cannot be confirmed from open sources.

Curator qualifications: Open sources read 2026-10-22; AES77 itself not read (paid); AES site not retried. AES77 text unread (paid); trade report is secondary.

Limitations: Open sources read 2026-10-22; AES77 itself not read (paid); AES site not retried.

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

```json
{
  "citations": [
    {
      "url": "https://web.archive.org/web/20240714082802id_/https://aes2.org/wp-content/uploads/2024/01/20210924_TD1008_v3.13.pdf",
      "note": "Radio World: AES publishes loudness guidelines for online audio (Wayback 20260614063633); AES TD1008 (2021-09-24) via Wayback, Table 1 and peak section (reviewed in CA-B232); arXiv 2405.17364v1 section 4.1 and reference [22]"
    },
    {
      "url": "https://web.archive.org/web/20260614063633id_/https://www.radioworld.com/news-and-business/headlines/aes-publishes-loudness-guidelines-for-online-audio",
      "note": "Radio World: AES publishes loudness guidelines for online audio (Wayback 20260614063633); AES TD1008 (2021-09-24) via Wayback, Table 1 and peak section (reviewed in CA-B232); arXiv 2405.17364v1 section 4.1 and reference [22]"
    },
    {
      "url": "https://arxiv.org/pdf/2405.17364v1",
      "note": "Radio World: AES publishes loudness guidelines for online audio (Wayback 20260614063633); AES TD1008 (2021-09-24) via Wayback, Table 1 and peak section (reviewed in CA-B232); arXiv 2405.17364v1 section 4.1 and reference [22]"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] No open source read states the numeric targets in AES77-2023, which is a paid standard. A trade report says AES77 is based on TD1008 and does not recommend loudness range or device playback targets; TD1008's own figures (-18 LUFS speech, -16 LUFS track-normalised music, -14 LUFS for the loudest album track, at most -1 dBTP at the codec input) are public and already reviewed. Whether AES77's numbers equal TD1008's cannot be confirmed from open sources. · locator: Radio World: AES publishes loudness guidelines for online audio (Wayback 20260614063633); AES TD1008 (2021-09-24) via Wayback, Table 1 and peak section (reviewed in CA-B232); arXiv 2405.17364v1 section 4.1 and reference [22] · source: https://web.archive.org/web/20240714082802id_/https://aes2.org/wp-content/uploads/2024/01/20210924_TD1008_v3.13.pdf

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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