Sound absorption vs frequency
API · /sonar-api
Sonar & Underwater Sound API
salutare
4,681 Abbonati
Unterwasserschall- und Sonar-Mathematik als API, lokal und deterministisch berechnet – die Geschwindigkeits-, Absorptions- und Entfernungszahlen, mit denen ein Schiffsingenieur, Sonarentwickler oder Ozeanograph arbeitet. Der Schallgeschwindigkeits-Endpunkt liefert die Schallgeschwindigkeit im Meerwasser aus der Mackenzie-Neun-Term-Gleichung: etwa 1.500 m/s – weit schneller als in Luft – steigend mit Temperatur, Salzgehalt und Tiefe, sodass ein Profil von 25 °C, 35 ppt bei 1.000 m 1.550,7 m/s ergibt. Da die Geschwindigkeit mit der Tiefe variiert, biegen sich Schallstrahlen und bilden den SOFAR-Kanal, der Walgesänge und Signale über ganze Ozeane trägt. Der Absorptions-Endpunkt liefert Thorp's Schallabsorptionskoeffizienten in dB pro km gegen die Frequenz, mit dem Verlust über eine Strecke: Meerwasser verschluckt hohe Frequenzen schnell, weshalb Langstreckensonar und Walrufe tief sind, während hochfrequentes Sonar nur auf kurze Distanz scharfe Bilder liefert. Der Echo-Entfernungs-Endpunkt wandelt die Zwei-Wege-Laufzeit eines Echolots oder Sonars in die Entfernung oder Tiefe um – Distanz = Schallgeschwindigkeit × Zeit ÷ 2 – sodass ein Ein-Sekunden-Rundweg bei 1.500 m/s ein Ziel 750 m entfernt ergibt, dessen Genauigkeit auf der angenommenen Schallgeschwindigkeit beruht. Alles wird lokal und deterministisch berechnet, also sofort und privat. Ideal für Sonar- und Hydrophon-Werkzeuge, Vermessungs- und Bathymetrie-Apps, ozeanakustische Forschung und AUV/ROV-Navigationshilfen. Reine lokale Berechnung – kein Key, kein Drittanbieter-Service, sofort. Standardgleichungsschätzungen über ihre gültigen Bereiche. 3 Compute-Endpunkte. Für die Schallgeschwindigkeit in Luft und Mach verwenden Sie eine Mach-Zahl-API; für Dezibel eine Schallpegel-API.
api.oanor.com/sonar-api
API salute
salutare- Tempo di attività
- 100.00%
- Sondaggi del server · 24 ore su 24
- Latenza media
- 81 ms
- Sondaggi del server · 24 ore su 24
- Abbonati
- 4,681
- attiva
- Chiamate totali
- 76
- ultimi 7 giorni
Prezzi
Scegli un livello: fatturazione mensile, annullamento in qualsiasi momento.
Free
Gratis
- 4,300 chiamate/mese
- 2 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 4.300 Aufrufe/Monat
- 2 req/sec
- Schallgeschwindigkeit + Absorption + Echo-Reichweite
- Keine Kreditkarte
Starter
€13.10 /mese
- 46,000 chiamate/mese
- 6 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 46.000 Aufrufe/Monat
- 6 req/sec
- Mackenzie & Thorp-Modelle
- E-Mail-Support
Pro
€40.20 /mese
- 208,000 chiamate/mese
- 15 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 208.000 Aufrufe/Monat
- 15 req/sec
- Sonar-, Vermessungs- und Bathymetrie-Pipelines
- Priority-Support
Mega
€126.00 /mese
- 1,100,000 chiamate/mese
- 40 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 1.100.000 Aufrufe/Monat
- 40 req/sec
- Flotten- und Forschungsumfang
- Dedizierte SLA
Costruito da
Correlato APIs
Altro APIs con tag sovrapposti.
Cross-Asset Drawdown & Recovery Monitor API
How far every major market is below its peak and how long it has been underwater, computed live from Yahoo Finance (no key, nothing stored). Drawdown is the risk investors actually feel: not volatility in the abstract, but the gap between today's price and the high-water mark, and the painful stretch spent climbing back. For every asset — equity indices, bonds, gold, oil, commodities, FX and crypto — this measures the current drawdown from its rolling peak, the worst (maximum) drawdown over the window, the date and level of the peak, how many days it has been underwater, and how much of the fall it has already recovered. The monitor endpoint returns the whole universe ranked by current drawdown — what is deepest underwater and what is back at new highs — with a summary of how many markets are in drawdown. The asset endpoint returns one market's drawdown card. The universe endpoint lists what is covered. The cross-asset drawdown / underwater-recovery cut — distinct from the FX-only drawdown API, the crypto all-time-high API and the cross-asset volatility API (which ranks risk-adjusted return, not the underwater curve). It answers how far from the highs, and how long.
api.oanor.com/assetdrawdown-api
Soundproofing API
Building-acoustics soundproofing maths as an API, computed locally and deterministically. The mass-law endpoint computes the sound-transmission loss of a single partition from its surface mass density and the frequency using the field-incidence mass law, TL = 20·log10(m·f) − 47 dB — transmission loss rises about 6 dB for every doubling of mass or of frequency — and also gives the normal-incidence value. The composite endpoint combines the transmission losses of several elements that make up one wall, such as a heavy wall with a window or a door, by area-weighting their transmission coefficients, TL = −10·log10(Σ(Ai·τi)/ΣAi) — which shows how the weakest element, like a small gap or a thin window, dominates and wrecks an otherwise good wall. The transmission endpoint computes the received sound level on the far side of a partition, the source level minus the transmission loss, with an optional room-to-room correction that adds 10·log10(partition area / receiving-room absorption). Surface density is in kg/m², frequency in Hz, levels and transmission losses in dB and areas in m². Everything is computed locally and deterministically, so it is instant and private. Ideal for architecture, building-acoustics, studio-design, HVAC-noise and construction app developers, partition and noise-control tools, and acoustics education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is sound insulation; for room reverberation use a reverberation API and for sound pressure level a sound-level API.
api.oanor.com/soundproof-api
API de Resonador Helmholtz
Acústica de resonador Helmholtz como API, calculada local y determinísticamente. El endpoint de frecuencia calcula la frecuencia de resonancia de un resonador Helmholtz — una cavidad con un cuello, como una botella o una caja de altavoz portada — a partir del área del cuello (o diámetro), la longitud del cuello y el volumen de la cavidad, f = (c/2π)·√(A/(V·L_eff)), añadiendo la corrección acústica de extremo (aproximadamente 0.85·radio para un extremo con brida y 0.61·radio para un extremo libre) de modo que un cuello corto o abierto resuena más bajo de lo que sugiere su longitud física. El endpoint de diseño invierte la relación, V = A·c²/(L_eff·ω²), para dar el volumen de cavidad necesario para sintonizar un resonador o una cámara de silenciador a una frecuencia objetivo. El endpoint de sintonización de puerto dimensiona un puerto de caja bass-reflex (altavoz ventilado) en unidades de audio prácticas — a partir del volumen de la caja en litros y el diámetro del puerto en centímetros da la frecuencia de sintonización para una longitud de puerto dada, o la longitud de puerto requerida para una frecuencia de sintonización objetivo, usando la corrección de extremo de 0.732·diámetro. Los endpoints principales usan unidades SI; la velocidad del sonido por defecto es 343 m/s. Todo se calcula local y determinísticamente, por lo que es instantáneo y privado. Ideal para desarrolladores de aplicaciones de audio, diseño de altavoces, instrumentos musicales, silenciadores y tratamiento acústico, herramientas de bass-reflex y resonadores, y educación en acústica. Cálculo local puro — sin clave, sin servicio de terceros, instantáneo. En vivo, nada almacenado. 3 endpoints. Esto es resonancia Helmholtz; para reverberación de sala use una API de reverberación y para ondas estacionarias en cuerdas y tubos una API de ondas estacionarias.
api.oanor.com/helmholtz-api
Reverberation Time API
Room-acoustics reverberation-time maths as an API, computed locally and deterministically. The sabine endpoint computes the reverberation time of a room — the RT60, the time for the sound to decay by 60 dB — from the Sabine formula RT60 = 0.161·V/A, where V is the room volume and A the total absorption in metric sabins; you can give the absorption directly, or as a surface area times an average absorption coefficient, and it also solves the absorption you would need to hit a target reverberation time. The eyring endpoint uses the Eyring-Norris formula RT60 = 0.161·V/(−S·ln(1−ᾱ)), which is more accurate than Sabine for absorbent rooms with a high average coefficient, and reports both for comparison. The absorption endpoint builds the absorption budget from a list of surfaces, each with its area and absorption coefficient, returning the total and average absorption and the resulting Sabine RT60, plus the extra absorption needed to reach a target. Everything is computed locally and deterministically, so it is instant and private. Ideal for acoustic-design, studio, classroom and home-theatre tools, room-treatment planning and building-acoustics apps, and audio-engineering education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is room reverberation time; for decibel conversion and combining sound levels use a sound-level API.
api.oanor.com/reverb-api
Domande frequenti
Risposte rapide su prezzi, quote e integrazione.
Come ottengo una chiave API per Sonar & Underwater Sound API?
Registrati gratuitamente su oanor.com, genera una chiave API dalla dashboard sviluppatore e chiama Sonar & Underwater Sound API con l'header x-oanor-key. Nessuna carta di credito richiesta per il piano gratuito.
Qual è il limite di velocità di Sonar & Underwater Sound API?
Il piano gratuito consente 1 richiesta al secondo. I piani a pagamento arrivano fino a 50 richieste al secondo nel piano Mega. I limiti rigorosi restituiscono HTTP 429 oltre la quota — nessuna spesa imprevista.
Quanto costa Sonar & Underwater Sound API?
Sonar & Underwater Sound API ha un piano gratuito con 100 chiamate / mese. I piani a pagamento partono da €13.10 / mese con quote più alte e limiti di velocità più rapidi.
Posso cancellare l'abbonamento in qualsiasi momento?
Sì. I piani sono fatturati mensilmente e puoi cancellare in qualsiasi momento dalla dashboard di fatturazione. Nessun contratto a lungo termine e nessuna penale di cancellazione.
Sonar & Underwater Sound API è conforme al GDPR?
Tutte le richieste a Sonar & Underwater Sound API passano attraverso il nostro gateway in UE. La tua chiave upstream non lascia mai il nostro server e nessun dato personale viene condiviso con il fornitore upstream oltre alla richiesta inviata.
Scegli un endpoint dall'elenco a sinistra per visualizzarne i dettagli e provarlo.
Frammenti di codice
Iscriviti per ottenere una chiave API, quindi chiama qualsiasi percorso sotto il tuo slug.
curl https://api.oanor.com/sonar-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/sonar-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/sonar-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);import requests
r = requests.get(
"https://api.oanor.com/sonar-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Valutazioni
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