Commercial vs Programme Loudness Delta
Check the LU difference between a commercial and surrounding programme — the number loudness regulation (CALM Act, R 128) actually polices.
Both the US CALM Act (via A/85) and EBU R 128 work by making everything measure the same: if ads and programmes both hit the target, the delta is zero. A jump of 2–3 LU is reliably noticed by viewers; 5+ LU generates complaints. This is the arithmetic regulators check.
Rule / Formula
Check the LU difference between a commercial and surrounding programme — the number loudness regulation (CALM Act, R 128) actually polices.
About Commercial vs Programme Loudness Delta
Check the LU difference between a commercial and surrounding programme — the number loudness regulation (CALM Act, R 128) actually polices. Both the US CALM Act (via A/85) and EBU R 128 work by making everything measure the same: if ads and programmes both hit the target, the delta is zero. A jump of 2–3 LU is reliably noticed by viewers; 5+ LU generates complaints. This is the arithmetic regulators check.
How to use Commercial vs Programme Loudness Delta
- 1Enter your values into the fields in Commercial vs Programme Loudness Delta.
- 2The result and any pass/fail verdict update instantly as you type — no button to press.
- 3Check the substituted formula and worked example to see exactly how the result was derived.
- 4Copy or note the result for your spec, delivery or planning.
Why use Commercial vs Programme Loudness Delta?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: FCC CALM Act / ATSC A/85.
- ✓Shows the governing formula and a worked example, so you can trust and check every result.
- ✓100% free with no sign-up, no watermark and no usage limits.
- ✓Works on any device — desktop, tablet or phone — and keeps working offline once loaded.
Frequently asked questions
What does Commercial vs Programme Loudness Delta do?+
Check the LU difference between a commercial and surrounding programme — the number loudness regulation (CALM Act, R 128) actually polices. Both the US CALM Act (via A/85) and EBU R 128 work by making everything measure the same: if ads and programmes both hit the target, the delta is zero.
Is my data private?+
Yes. Commercial vs Programme Loudness Delta runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is Commercial vs Programme Loudness Delta based on?+
It follows FCC CALM Act / ATSC A/85; EBU R 128. Always confirm against the current official document, as specifications and rates can change.
What formula does it use?+
Commercial vs Programme Loudness Delta uses: Δ = commercial LKFS − programme LKFS; compliance practice keeps |Δ| ≤ 2 LU. The tool shows this formula with your own numbers substituted so you can verify the result.
Is Commercial vs Programme Loudness Delta free to use?+
Yes — it is completely free with no account, no sign-up and no usage limits. There is no watermark and no paywall.
Embed Commercial vs Programme Loudness Delta on your website
Want Commercial vs Programme Loudness Deltaon your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/commercial-program-loudness-delta" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Commercial vs Programme Loudness Delta — ToolJolt" loading="lazy"></iframe>Related Broadcast tools
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