{"uid":"cap_jqPeFDzxZbIdYdn2GDGzd","slug":"audio-calc-sound-wavelength-speed-calculator-d99742bb","name":"Audio Calc: Sound Wavelength & Speed Calculator","description":"Speed of sound in air at a temperature, wavelength and period for a frequency or the reverse, with delay per metre.","url":"https://audio-calc.x402tookit.com/sound-wavelength?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"delayMs":{"type":"number","description":"A delay in ms to turn into a distance"},"distanceM":{"type":"number","description":"A distance in metres to turn into a delay"},"frequencyHz":{"type":"number","description":"Frequency in Hz (use this, or wavelengthM, or delayMs)"},"wavelengthM":{"type":"number","description":"Wavelength in metres"},"temperatureC":{"type":"number","description":"Air temperature in C (default 20)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"source":{"type":["null","string"]},"delayMs":{},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"periodMs":{"type":["null","number"]},"distanceM":{},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"frequencyHz":{"type":["null","number"]},"wavelengthM":{"type":["null","number"]},"temperatureC":{"type":["null","number"]},"wavelengthCm":{"type":["null","number"]},"speedOfSoundMs":{"type":["null","number"]},"delayPerMetreMs":{"type":["null","number"]},"halfWavelengthM":{"type":["null","number"]},"feetPerMillisecond":{"type":["null","number"]},"quarterWavelengthM":{"type":["null","number"]},"metresPerMillisecond":{"type":["null","number"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_HAfLTE1cQz0A0jj0c1HRd","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates speed of sound, wavelength, period, and delay-per-metre for audio frequencies at a given air temperature, with bidirectional frequency/wavelength/delay/distance conversions.","exampleAgentPrompt":"What's the wavelength and quarter-wavelength of a 1 kHz tone at 20°C, and how long is the delay per metre at that temperature?","exampleUseCases":[{"title":"Speaker placement distance from delay","prompt":"I have a 12ms delay between my main speakers and delay towers — what distance in metres does that correspond to at an air temperature of 22°C?"},{"title":"Subwoofer wavelength for room treatment","prompt":"What's the full, half, and quarter wavelength of an 80 Hz bass tone at 20°C? I'm trying to figure out where to place acoustic panels."},{"title":"Frequency from a known wavelength","prompt":"I measured a standing wave with a wavelength of 0.86 metres in my studio — what frequency is that, and what's the period in milliseconds? Assume 20°C."}],"resultDescription":"Returns a JSON object with speedOfSoundMs, wavelengthM, wavelengthCm, halfWavelengthM, quarterWavelengthM, periodMs, delayMs, distanceM, delayPerMetreMs, metresPerMillisecond, feetPerMillisecond, temperatureC, and frequencyHz — covering all computed acoustic properties for the given inputs.","failureModes":["Missing all optional query params (frequencyHz, wavelengthM, delayMs, distanceM) may return an error or empty calculation","Extremely high or low temperatures outside physical plausibility may produce unexpected results","Conflicting inputs (both frequencyHz and wavelengthM supplied) may cause ambiguity in the response","HTTP 402 returned if payment is not attached or USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when you need precise acoustic physics calculations — speed of sound at a specific temperature, wavelength/frequency conversions, or delay-to-distance mapping — rather than a general physics formula or table lookup. It is purpose-built for audio engineering contexts and returns all derived quantities (quarter-wave, delay per metre, feet per ms) in a single call, making it ideal for speaker placement, room acoustics, and live sound delay alignment tasks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T06:37:48.050Z","isFirstParty":false,"canonicalSlug":"audio-calc-sound-wavelength-speed-calculator-d99742bb"}