This applies if you are documenting the noise levels of a product (like a ventilation fan or appliance) for official certification. In this context, measure subjective loudness, while dBA measures objective sound pressure.
If you have ever shopped for a bathroom exhaust fan, a range hood, or an HVAC system, you have encountered two distinct units of sound measurement: and dBA (A-Weighted Decibels).
: L_A ≈ 40 + 10 * log2(N) where N = loudness in sones, L_A = dB(A).
This applies if you are documenting the noise levels of a product (like a ventilation fan or appliance) for official certification. In this context, measure subjective loudness, while dBA measures objective sound pressure.
If you have ever shopped for a bathroom exhaust fan, a range hood, or an HVAC system, you have encountered two distinct units of sound measurement: and dBA (A-Weighted Decibels).
: L_A ≈ 40 + 10 * log2(N) where N = loudness in sones, L_A = dB(A).