Spec

Extraits de code

curl "https://api.oanor.com/chebyshev-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/chebyshev-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/chebyshev-api/v1/meta");
curl_setopt($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/chebyshev-api/v1/meta",
    headers={"x-oanor-key": "oanor_test_..."}
)

Exemple de réponse

Une réponse réelle de ce endpoint, capturée lors du dernier contrôle de santé.

{
    "data": {
        "notes": "Frequencies in Hz (or any consistent unit), ripple/attenuation in dB, order a positive integer. Chebyshev Type I ripples in the passband and is flat in the stopband.",
        "service": "chebyshev-api",
        "formulae": {
            "order": "n = ⌈acosh(√((10^(As/10)−1)/(10^(Ap/10)−1)))/acosh(fs/fp)⌉",
            "epsilon": "ε = √(10^(Ap/10) − 1)",
            "response": "|H| = 1/√(1 + ε²·Tn²(f/fc))"
        },
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/order": "Minimum order from passband/stopband edges, ripple and attenuation.",
            "GET /v1/ripple": "Convert between passband ripple (dB) and the ripple factor ε.",
            "GET /v1/response": "Magnitude (and dB) of an n-th order Chebyshev at a frequency."
        },
        "description": "Chebyshev Type I filter calculator: minimum order for a spec, the equiripple magnitude response, and the ripple/epsilon relationship."
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:34.768Z",
        "request_id": "2e4b2007-5c73-4ab9-8e4d-2931f764edf7"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}