Japan TV long form loudness spec
What a file has to measure to pass this spec, and where each figure comes from.
| Check | Required | In LC-1 |
|---|---|---|
| Integrated loudness | −24.0 ±1 LKFS | Fixed with a level change |
| True peak | −1.0 dBTP max | Limited, with audition |
Worth knowing
ARIB published v1.7 on 9 October 2026. It is paid and in Japanese, so it has not been read; ARIB’s summary of the changes does not mention the target.
Data source(s)
- ARIB TR-B32 v1.5 (English edition, 2016)
Figures taken from the documents above and last read on 10 October 2026, as quotes extracted from the source: confirm against the full document before relying on it.
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