Decibel (dB) Converter implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t3-018

Effect

Computation or source lookup only

Input and validation requirements

A zero reference produces an undefined ratio and must be rejected. The specification also leaves ratio direction and power-versus-voltage branch selection implicit, allowing sign errors or a factor-of-two conversion error.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "mode": "power_ratio_to_db",
    "P2": 100,
    "P1": 1,
    "power_unit": "mW"
  },
  "expected_outputs": {
    "dB": 20
  },
  "working": "P2/P1 = 100/1 = 100. dB = 10×log10(100) = 10×2 = 20 dB."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche3/tranche3-results.json