ToolVet

Audio Calc

12 x402 APIs served from audio-calc.x402tookit.com

Every listing from Audio Calc that ToolVet tracks. Each one is called on a schedule without paying and scored out of 100.

At a glance

Listings
12 x402 APIs
Passing at the latest check
9 of 12
Uptime, 30 days
59.8% on average across 12 listings
Price
$0.02 per call
Trust score
32 to 63, median 60
Paying wallets, 30 days
No usage data
Verified owner
None
Security findings
None found
Listed since
20 Oct 2026

No usage data. The x402 Bazaar reports paying wallets for the x402 APIs it lists; MCP servers and APIs submitted directly have none.

All 12 listings

Ranked by trust score.

  • 63trust
    DbfsAudio Calc

    Convert between linear amplitude and dBFS, and get the RMS level and crest factor of a sine, square, triangle or sawtooth.

    x402 APIDocuments & files
    $0.02per call on Polygon
    70.0% uptime, 515 msPassing, checked 5 h ago
  • 62trust
    Room ModesAudio Calc

    Room mode frequencies (axial, tangential, oblique) for a rectangular room, plus Schroeder frequency from RT60.

    x402 APIOther
    $0.02per call on Polygon
    66.7% uptime, 525 msPassing, checked 11 h ago
  • 61trust
    Buffer LatencyAudio Calc

    Audio buffer size to latency in ms (one way and round trip) at a sample rate, or the buffer needed for a latency target.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 530 msPassing, checked 5 h ago
  • 61trust
    Bit DepthAudio Calc

    Dynamic range, levels and smallest step for a PCM bit depth, theoretical SNR, and the bit depth needed for a dB range.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 560 msPassing, checked 3 h ago
  • 60trust
    Tuning TemperamentAudio Calc

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

    x402 APIOther
    $0.02per call on Polygon
    60.0% uptime, 532 msPassing, checked 4 h ago
  • 60trust
    Interval RatioAudio Calc

    Convert a frequency ratio (3:2) to cents and semitones or back, name just and Pythagorean intervals and commas, apply to Hz.

    x402 APIDocuments & files
    $0.02per call on Polygon
    60.0% uptime, 520 msPassing, checked 2 h ago
  • 60trust
    Bitrate SizeAudio Calc

    Audio file size from bitrate and duration, or the bitrate or duration it implies; PCM size from rate, depth and channels.

    x402 APIDocuments & files
    $0.02per call on Polygon
    61.1% uptime, 515 msPassing, checked 10 h ago
  • 59trust
    Db SumAudio Calc

    Add, average or subtract sound levels in dB: total of several sources, N identical sources, or background-corrected level.

    x402 APIOther
    $0.02per call on Polygon
    56.3% uptime, 529 msPassing, checked 2 h ago
  • 58trust
    Sample RateAudio Calc

    Nyquist frequency for a sample rate, plus the alias frequency and samples per cycle of a tone, and the guard band above 20 kHz.

    x402 APIOther
    $0.02per call on Polygon
    53.3% uptime, 514 msPassing, checked 13 h ago
  • 35trust
    Sound WavelengthAudio Calc

    Speed of sound in air at a temperature, wavelength and period for a frequency or the reverse, with delay per metre.

    x402 APIOther
    $0.02per call on Polygon
    58.8% uptime, 508 msFailing, checked 25 h ago
  • 33trust
    Lufs MathAudio Calc

    Loudness maths: gain to a LUFS target or platform, resulting true peak vs ceiling, or combining segment loudness.

    x402 APIOther
    $0.02per call on Polygon
    52.9% uptime, 516 msFailing, checked 24 h ago
  • 32trust
    Spl DistanceAudio Calc

    Sound level at another distance (inverse-square law; line sources fall 3 dB per doubling), or the distance for a level.

    x402 APIOther
    $0.02per call on Polygon
    50.0% uptime, 516 msFailing, checked 21 h ago

Watch these listings in one feed

How these numbers are made

Each listing is called on a schedule without paying. Listings with usage or a verified owner are checked about every 30 minutes, others about every 6 hours. Uptime is the share of passing checks over 30 days, averaged across this provider's listings. Trust scores follow the published method. The figures on this page can be a few minutes behind the latest checks, and listings hidden after review aren't counted.