Media
True Peak Safe Limiter
Limit a master to a chosen true-peak ceiling (-1, -2, -1.5 or -0.3 dBTP) with a measure-limit-verify loop: FFmpeg’s lookahead limiter is driven below the ceiling by an inter-sample margin, and the result is re-measured with the BS.1770 oversampled meter until the true peak genuinely sits under target.
file· File resultOpen tool
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-true-peak-safe-limiter' \
-H 'Content-Type: application/json' \
-d '{"filename":"audioFile.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-true-peak-safe-limiter' \
-F 'audioFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'ceiling=streaming' \
-F 'customCeiling=-1' \
-F 'ispMargin=1' \
-F 'attackMs=5' \
-F 'releaseMs=50' \
-F 'outputFormat=wav-f32'