Audio Calc

audio-calc.x402tookit.com · 12 paid endpoints · listed 2026-11-02

Frequencies, cents and ratios of the 12 notes in equal, 5-limit just, Pythagorean or quarter-comma meantone tuning.

pendinglast check not yet
–valid x402 answers, 72 h
sharedUSDC received on Base, 7 days
2distinct payers, 7 days
10.5score (0-100)

Paid endpoints

MethodEndpointPriceNetworks
GETaudio-calc.x402tookit.com/bit-depth
Dynamic range, levels and smallest step for a PCM bit depth, theoretical SNR, and the bit depth needed for a dB range.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/bitrate-size
Audio file size from bitrate and duration, or the bitrate or duration it implies; PCM size from rate, depth and channels.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/buffer-latency
Audio buffer size to latency in ms (one way and round trip) at a sample rate, or the buffer needed for a latency target.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/db-sum
Add, average or subtract sound levels in dB: total of several sources, N identical sources, or background-corrected level.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/dbfs
Convert between linear amplitude and dBFS, and get the RMS level and crest factor of a sine, square, triangle or sawtooth.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/interval-ratio
Convert a frequency ratio (3:2) to cents and semitones or back, name just and Pythagorean intervals and commas, apply to Hz.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/lufs-math
Loudness maths: gain to a LUFS target or platform, resulting true peak vs ceiling, or combining segment loudness.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/room-modes
Room mode frequencies (axial, tangential, oblique) for a rectangular room, plus Schroeder frequency from RT60.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/sample-rate
Nyquist frequency for a sample rate, plus the alias frequency and samples per cycle of a tone, and the guard band above 20 kHz.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/sound-wavelength
Speed of sound in air at a temperature, wavelength and period for a frequency or the reverse, with delay per metre.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/spl-distance
Sound level at another distance (inverse-square law; line sources fall 3 dB per doubling), or the distance for a level.
$0.02Polygon, Arbitrum, Base, Solana
GETaudio-calc.x402tookit.com/tuning-temperament
Frequencies, cents and ratios of the 12 notes in equal, 5-limit just, Pythagorean or quarter-comma meantone tuning.
$0.02Polygon, Arbitrum, Base, Solana

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Income on Base (7 days)

This provider's payout address is shared by several providers, so its income is not shown as its own.

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Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/audio-calc.x402tookit.com