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GET /v1/eyring

Eyring-Norris RT60

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

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

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Code snippets

curl "https://api.oanor.com/reverb-api/v1/eyring" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/reverb-api/v1/eyring", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/reverb-api/v1/eyring");
curl_setopt($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/reverb-api/v1/eyring",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "note": "RT60 = 0.161·V/(−S·ln(1−ᾱ)) (Eyring-Norris). Shorter than Sabine; preferred when ᾱ exceeds ~0.2.",
        "inputs": {
            "volume": 200,
            "surface_area": 240,
            "average_absorption": 0.2
        },
        "rt60_s": 0.6013,
        "sabine_rt60_s": 0.6708,
        "effective_absorption_m2sabins": 53.5545
    },
    "meta": {
        "timestamp": "2026-06-04T18:38:27.547Z",
        "request_id": "3b27021f-c52f-40b2-a7de-6dea0758c578"
    },
    "status": "ok",
    "message": "Eyring RT60",
    "success": true
}