Chord notes from root + quality
API · /musicnote-api
API de Teoría Musical
salutare
3,938 Abbonati
Matemáticas de teoría musical como API, en temperamento igual con A4 = 440 Hz y notación de tono científica (C4 = Do central = MIDI 60). El endpoint de notas convierte libremente entre un nombre de nota (A4, C#5, Eb3), un número de nota MIDI y una frecuencia — y cuando pasas una frecuencia, devuelve la nota más cercana y cuántos cents está desafinada. El endpoint de intervalos da la distancia entre dos notas en semitonos y cents, su nombre (quinta perfecta, tercera mayor, …) y la relación de frecuencia exacta. El endpoint de acordes devuelve las notas, números MIDI y frecuencias de un acorde a partir de una nota fundamental y una calidad (mayor, menor, disminuido, aumentado, suspendido, 6, 7, maj7, m7, dim7, m7b5, 9 y más). El endpoint de escalas devuelve las notas de una escala o modo a partir de una fundamental — mayor, las tres escalas menores, los siete modos eclesiásticos, las pentatónicas mayor y menor, blues, tono completo y cromática. La ortografía con sostenidos o bemoles es seleccionable. Todo se calcula local y determinísticamente, por lo que es instantáneo y privado. Ideal para aplicaciones y juegos musicales, sintetizadores y DAWs, entrenamiento auditivo y enseñanza de teoría, afinadores y herramientas MIDI. Cálculo local puro — sin clave, sin servicio de terceros, instantáneo. En vivo, nada se almacena. 5 endpoints. Esto es teoría musical; para buscar pistas y artistas usa una API de música y para el repertorio clásico usa una API de música clásica.
api.oanor.com/musicnote-api
API salute
salutare- Tempo di attività
- 100.00%
- Sondaggi del server · 24 ore su 24
- Latenza media
- 80 ms
- Sondaggi del server · 24 ore su 24
- Abbonati
- 3,938
- attiva
- Chiamate totali
- 55
- ultimi 7 giorni
Prezzi
Scegli un livello: fatturazione mensile, annullamento in qualsiasi momento.
Free
Gratis
- 6,735 chiamate/mese
- 2 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 6,735 calls/month
- 2 req/sec
- Notes / intervals / chords / scales
- No credit card
Starter
€8.25 /mese
- 16,250 chiamate/mese
- 8 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 16.25k calls/month
- 8 req/sec
- MIDI + frequency + cents
- Email support
Pro
€28.15 /mese
- 213,500 chiamate/mese
- 20 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 213.5k calls/month
- 20 req/sec
- Synth / DAW / MIDI pipelines
- Priority support
Mega
€66.15 /mese
- 1,110,000 chiamate/mese
- 50 richieste/secondo
- Tetto rigido (429 sopra la quota, nessuna eccedenza)
- 1.11M calls/month
- 50 req/sec
- Platform scale
- Dedicated SLA
Costruito da
Correlato APIs
Altro APIs con tag sovrapposti.
Music Theory API
Music-theory maths as an API, computed locally and deterministically over the twelve-tone chromatic scale. The interval endpoint gives the number of semitones and the interval name between two notes — C to G is seven semitones, a perfect fifth. The transpose endpoint shifts one or more notes up or down by a number of semitones, so C E G transposed up seven becomes G B D and a negative value transposes down. The chord endpoint returns the notes of a chord from a root and a type — major, minor, diminished, augmented, the sevenths (major7, minor7, dominant7, diminished7, half-diminished7), sixths, suspended, add9, ninth and power chords — so C major is C E G and C7 is C E G B♭. The scale endpoint returns the notes of a scale from a root and a mode — the major and three minor scales, the seven church modes, the major and minor pentatonics, blues, whole-tone and chromatic — so C major is C D E F G A B and A natural-minor is A B C D E F G. Notes use C, C#, D♭ … B, and accidental=flat spells with flats. Everything is computed locally and deterministically, so it is instant and private. Ideal for music-education, ear-training, songwriting, DAW-plugin, notation and instrument app developers, chord-and-scale tools, and practice software. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. This is pitch-class theory; for the actual frequency of a note use a music-note API.
api.oanor.com/musictheory-api
Chimney & Flue API
Chimney and flue sizing maths as an API, computed locally and deterministically — the draft and dimension numbers a stove installer, sweep or builder runs so a fire pulls cleanly and safely. The flue-size endpoint gives the minimum flue cross-section for a fireplace opening: at least a tenth of the opening area for a square or rectangular liner, a twelfth for a round one (which draws better) — a 36 × 30 inch opening needs about 108 square inches of rectangular flue, or a 10.7-inch round. The draft endpoint gives the theoretical draft from the stack effect, ΔP ≈ 3465 × height × (1/T_outside − 1/T_flue) with temperatures in kelvin, so a 6-metre chimney with 200 °C flue gas on a freezing day pulls about 32 pascals (0.13 inches of water column) — taller and hotter draws harder. The height endpoint applies the 3-2-10 rule: a chimney must finish at least 3 feet above where it pierces the roof and at least 2 feet above anything within 10 feet, whichever is higher. Everything is computed locally and deterministically, so it is instant and private. Ideal for hearth and stove-installer apps, chimney-sweep and inspection tools, building-design calculators, and DIY-safety sites. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints. Educational estimates — verify against your appliance listing and adopted code.
api.oanor.com/chimney-api
Fishing Tackle API
Angling and tackle maths as an API, computed locally and deterministically — the three numbers that decide how a reel is spooled and a lure is fished. The line-capacity endpoint works out how much line of a different diameter a reel will hold: line lies on the spool by cross-sectional area, so capacity scales with the inverse square of diameter — a reel rated for 100 yards of 0.30 mm holds about 73.5 yards of thicker 0.35 mm, or nearly 140 yards of a thinner 0.011-inch braid. The sink-time endpoint gives the countdown to fish a lure at depth: time = depth ÷ sink rate, so a minnow that sinks a foot a second reaches ten feet on a count of ten. The drag endpoint sets the reel: about 25–33 % of the line's breaking strength measured at the rod tip — a 20-pound line wants roughly 5 to 6.6 pounds of drag, enough to let a fish run before anything snaps. Everything is computed locally and deterministically, so it is instant and private. Ideal for fishing and tackle apps, reel-spooling and gear-shop tools, angler trip-planners, and learning sites. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints. Unit-agnostic — keep your units consistent; rules of thumb, conditions vary.
api.oanor.com/fishing-api
Aquaculture API
Fish-farming (aquaculture) maths as an API, computed locally and deterministically — the stocking, feed and oxygen numbers a fish farmer or RAS designer runs a system on. The stocking endpoint turns a tank or pond volume and a target biomass density into a fish count: biomass = density × volume, count = biomass ÷ average fish weight — a 10 m³ tank at 30 kg/m³ holds 300 kg, about 1,200 fish at 250 g each, and you stock to the harvest weight, not the fingerling weight, so the tank does not overload as they grow. The feed endpoint gives the daily ration as a percentage of body weight, and the feed to reach a target weight gain through the feed conversion ratio — 300 kg fed at 2 % is 6 kg a day, and growing 100 kg of fish at an FCR of 1.2 takes 120 kg of feed. The oxygen endpoint gives the dissolved-oxygen demand of a stock — biomass × the per-kg consumption rate — so 300 kg at 300 mg O₂/kg/hr needs 90 g of oxygen an hour, the number your aeration must beat. Everything is computed locally and deterministically, so it is instant and private. Ideal for aquaculture and RAS-design apps, fish-farm management tools, hatchery and feed calculators, and ag-tech sites. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints. Commercial-planning estimates — species and system vary. For a home aquarium use an aquarium API.
api.oanor.com/aquaculture-api
Domande frequenti
Risposte rapide su prezzi, quote e integrazione.
Come ottengo una chiave API per API de Teoría Musical?
Registrati gratuitamente su oanor.com, genera una chiave API dalla dashboard sviluppatore e chiama API de Teoría Musical con l'header x-oanor-key. Nessuna carta di credito richiesta per il piano gratuito.
Qual è il limite di velocità di API de Teoría Musical?
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 API de Teoría Musical?
API de Teoría Musical ha un piano gratuito con 100 chiamate / mese. I piani a pagamento partono da €8.25 / 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.
API de Teoría Musical è conforme al GDPR?
Tutte le richieste a API de Teoría Musical 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/musicnote-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/musicnote-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/musicnote-api/SOME_PATH");
curl_setopt($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/musicnote-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Valutazioni
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