sci.noise-dose-NIOSH Calculator
Calculates noise dose using the NIOSH exchange rate of 3 dB: D = Σ(Cᵢ/Tᵢ) × 100%, where T = 2^((90−L)/3) hours. NIOSH criterion: D < 100% (8-hour exposure limit = 85 dBA) — NIOSH uses a 3 dB exchange rate; OSHA uses 5 dB, allowing higher exposures.
Inputs
- Leq Dba
- Body or object weight. For health calculators, usually in kg or lbs.
- Exposure Hours
- Reference formula or conversion factor shown for context.
- Peak Dbc
- Reference formula or conversion factor shown for context.
Results
- noise dose D (%)
- Random or irrelevant variation in the measurement.
- permissible exposure time (hours)
- The result expressed in hours. Divide by 24 to convert to days.
- status
- Current state of the system, process, or metric — typically pass/fail, healthy/warning/critical, or a descriptive classification.
- peak impulse
- Reference formula or conversion factor shown for context.
- NIOSH formula
- The specific form or variant of the result.
- OSHA vs NIOSH
- Sample size or count used in the calculation.
exposure dose daily niosh permissible