ATSC A/85 — Techniques for Establishing and Maintaining Audio Loudness
The North American recommended practice for digital television audio loudness measurement and control, including loudness/true-peak quick reference.
Link
Related resources
- EBU R 154 — Parameters for UHD/HDR Programme DeliveryEBU recommendation setting required parameters for UHD and HDR programme delivery, referencing ITU-R BT.2100 and BT.2408 practice.
- EBU TR 045 — Codec-Independent Next-Generation Audio WorkflowsEBU technical report arguing for open, codec-independent NGA production workflows and explaining the role of ADM in immersive/personalized…
- EBU R 153 — Parameters for Live Contribution of UHD/HDREBU recommendation defining constraints for live UHD/HDR contribution links, complementing R 154's delivery parameters.
- EBU Tech 3373 — HLG UHDTV Colour Bar Test PatternsSpecification and downloadable TIFF/v210 HLG colour bar patterns for validating HDR production pipelines and 2SI signal paths.
- ATSC A/342-3:2025 — MPEG-H Audio System2025 revision of the ATSC 3.0 MPEG-H audio system specification, covering DRC target loudness fields, mae_LoudnessCompensationData and BS.1…
- APV Codec Specification (IETF, now RFC 9924)IETF document track for the Advanced Professional Video codec, published as RFC 9924 in February 2026.
- AMWA IS-04 — NMOS Discovery and Registration SpecificationCanonical rendered spec for NMOS registration and query APIs used to discover senders/receivers in SMPTE ST 2110 IP production networks.
- Advanced HDR by Technicolor (SL-HDR1/2/3)Vendor home for the SL-HDR family (ETSI TS 103 433), which carries an SDR base layer plus reconstruction metadata for backward-compatible H…
- Diving into the Depths of Widevine L3 (Neodyme)Deep security research write-up on Widevine L3 CDM internals: Frida hooking and Qiling/Unicorn emulation of OEMCrypto whitebox cryptography.