ATSC A/85 Techniques for Establishing and Maintaining Audio Loudness
Defines the long-form dialogue measurement method, target, anticipated measurement variation and True Peak ceiling that this approximate monitor is intended to follow.
Reference Loudness−24 LUFS
- Dialogue Loudness
- > −22 LUFS → Warn< −26 LUFS → Warn
- True Peak Max
- > −2 dBTP → Fail
ATSC A/85 Long-form Monitor
A practical PLVS monitor for dialogue-led ATSC long-form content.
How to Use
Copy Profile, then paste in PLVS outside a text field to review the import.
Or download the file and choose Settings → Saved Items → Import….
Confirm the import, then select the Profile in PLVS. Importing does not apply it automatically.
Details
This is a monitoring aid, not an A/85 conformance measurement. A/85 calls for dialogue-gated measurement over the complete composite mix using BS.1770-1 without the relative-level gate added by later versions. PLVS instead uses an open voice-activity detector followed by its existing gated Dialogue Integrated calculation. Results therefore depend on detection quality and only evaluate when PLVS has a dialogue estimate. Use a conforming system for delivery certification. ATSC's LKFS values are displayed as numerically equivalent LUFS in PLVS.
- Reference Loudness
- −24 LUFS
- Dialogue Loudness
- > −22 LUFS → Warn< −26 LUFS → Warn
- True Peak Max
- > −2 dBTP → Fail
- File Size
- 755 bytes
File Checksum
sha256:4cbfaf833ff827e863e4c48b54d3eb71efd2bdcd7a880191bc7de384fdd39ae9
Sources
ATSC A/85 Annex M Loudness and True Peak Quick Reference
Summarises the distinction between long-form dialogue loudness and short-form full-program loudness.
Release History
Release 1
2026-10-14 · published
Initial monitoring release with explicit non-conformance limitations.