Nyquist frequency for a sample rate, plus the alias frequency and samples per cy...
https://audio-calc.x402tookit.com/sample-rateOverview
Nyquist frequency for a sample rate, plus the alias frequency and samples per cycle of a tone, and the guard band above 20 kHz.
Protocol
x402
Price
$0.02
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Audio Calc
Source
bazaar
Indexed
2026-10-20 21:22:32
Health
Status
healthy
Latency (p50)
604ms
Uptime (30d)
87.5%
Reliability Score
83.8/100
Last Checked
2026-10-28 06:46:16
Last Healthy
2026-10-28 06:46:16
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"frequency": 30000,
"sampleRate": 44100
},
"type": "http"
}
Output Schema
{
"example": {
"asOf": "2026-10-11T14:38:35.405Z",
"commonUse": "CD audio",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"guardBandAbove20kHz": 2050,
"notChecked": [
"the anti-aliasing and reconstruction filters of a real converter (which roll off before Nyquist)",
"oversampling and sigma-delta converters, whose internal rate differs",
"…2 more"
],
"nyquistHz": 22050,
"reasons": [
"Aliased tones are indistinguishable from the lower frequency once sampled: filter before sampling.",
"Alias frequency = |f - fs x round(f / fs)|."
],
"samplePeriodMicroseconds": 22.6757,
"sampleRate": 44100,
"source": "Nyquist-Shannon sampling theorem, computed locally",
"summary": "30000 Hz is above Nyquist (22050 Hz) and would alias to 14100 Hz.",
"tone": {
"aliasHz": 14100,
"belowNyquist": false,
"cyclesPerSample": 0.68027211,
"frequencyHz": 30000,
"periodMilliseconds": 0.03333333,
"samplesPerCycle": 1.47
},
"verdict": "ALIASES"
},
"type": "json"
}