Media
CALM Act Commercial Loudness Checker
Check whether a commercial is louder than the programme it accompanies, per the FCC CALM Act rules and ATSC A/85: compare average loudness, grade the excess on the A/85 listener comfort scale, and flag loud-opening “gaming” with momentary-loudness diagnostics.
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Quick start
Call this tool from your code in three languages.
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/audio-calm-act-checker' \
-H 'Content-Type: application/json' \
-d '{"filename":"programFile.ext","contentType":"application/octet-stream","size":12345}'
curl -X POST 'https://api.elysiatools.com/api/upload/presign/audio-calm-act-checker' \
-H 'Content-Type: application/json' \
-d '{"filename":"commercialFile.ext","contentType":"application/octet-stream","size":12345}'
# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
--data-binary @/path/to/file.ext
# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/en/api/tools/audio-calm-act-checker' \
-F 'programFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'programSource=measure' \
-F 'programAnchorLufs=-24' \
-F 'commercialFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext'