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GET /v1/mass-law

Mass-law transmission loss

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Custom headers (optional)
api.oanor.com/soundproof-api

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Code snippets

curl "https://api.oanor.com/soundproof-api/v1/mass-law" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/soundproof-api/v1/mass-law", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/soundproof-api/v1/mass-law");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/soundproof-api/v1/mass-law",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Mass law (field incidence) TL = 20·log10(m·f) − 47 dB. Transmission loss rises ~6 dB per doubling of mass or of frequency. Real partitions deviate near the coincidence dip.",
        "inputs": {
            "frequency_hz": 500,
            "surface_density_kg_m2": 10
        },
        "normal_incidence_db": 31.9794,
        "transmission_loss_db": 26.9794
    },
    "meta": {
        "timestamp": "2026-06-05T11:30:29.433Z",
        "request_id": "8176bc8f-4739-4d6d-b0e1-c1967a2a5544"
    },
    "status": "ok",
    "message": "Mass law TL",
    "success": true
}