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Audio Calc LUFS Math
x402
Audio Calc LUFS Math is a paid API for AI agents from audio-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Calculates loudness gain adjustments to hit a LUFS target or streaming platform standard, predicts true peak after gain, and combines segment loudness values.
Price / call$0.02
Success—
StatusUnknown
How this service works
Loudness maths: gain to a LUFS target or platform, resulting true peak vs ceiling, or combining segment loudness.
Output
Returns a JSON object with the calculated gain in dB and linear scale, the predicted new true peak in dBTP, peak headroom remaining, whether limiting is needed, the target LUFS (and source/platform name if a named target was used), the combined LUFS if segments were provided, a human-readable summary and verdict, plus any caveats or platform targets table.
Example use cases
Podcast loudness normalization check
“My podcast episode measured -19.5 LUFS and my true peak is at -3.2 dBTP — how much gain do I need to hit the standard podcast loudness target, and will I need a limiter after applying it?”
Multi-segment integrated loudness
“I have three audio segments: one that's -22 LUFS for 45 seconds, one that's -16 LUFS for 30 seconds, and one that's -20 LUFS for 60 seconds — what's the combined integrated loudness across all of them?”
YouTube upload loudness check
“My mix is at -11 LUFS right now — what gain adjustment do I need to match the YouTube loudness target, and what will my true peak be after the adjustment if it's currently at -1.5 dBTP?”
Technical details
Endpoint
GEThttps://audio-calc.x402tookit.com/lufs-math?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need precise loudness mathematics for audio normalization workflows — especially when targeting named streaming platforms (Spotify, YouTube, Apple Music, etc.) or broadcast standards (EBU R128, ATSC A/85), when predicting whether a gain adjustment will cause true peak clipping, or when combining multiple audio segment loudness values into a single integrated LUFS figure. Prefer over manual calculation or general audio tools when you need instant, deterministic results with platform-specific targets built in.
Side effects
- Missing required 'lufs' parameter when computing gain results in an error or degraded response
- Invalid or unrecognized platform name for 'target' returns an error or falls back to numeric
- Malformed 'segments' string format causes parsing failure
- True peak values provided as positive numbers instead of negative dBTP may produce unexpected results
- Missing segment data when combination mode is implied
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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