2 sones
dBA≈33.2×log10(Sones)+28dBA is approximately equal to 33.2 cross log base 10 of open paren Sones close paren plus 28
"I don't want to just exist in the table," Sone replied, its code glowing with a newfound clarity. "I want to be the one who defines it."
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.
Sones=10dBA−2833.22Sones equals 10 raised to the the fraction with numerator dBA minus 28 and denominator 33.22 end-fraction power 📊 Verified Sone-to-dBA Quick Reference Chart
A: Partially. iPhone apps (like NIOSH SLM) are surprisingly accurate for dBA above 40 dB. Android phones vary wildly. You can verify relative differences, but absolute calibration is poor without external hardware.
When shopping for ventilation fans, range hoods, or HVAC equipment, you will often encounter two different metrics for sound: and Decibels (dBA) . While sones are used to measure perceived loudness, decibels (specifically A-weighted decibels, or dBA) measure the physical sound pressure level.
Understanding Sone to dBA: A Guide to Loudness and Verification
While Sones provide a linear scale (where 2 Sones is twice as loud as 1), dBA is logarithmic. A rating of 1 Sone is approximately equivalent to 28–40 dBA depending on the frequency spectrum.
Understanding "Sone to dBA Verified": The Ultimate Guide to Noise Measurement
To simplify these calculations, several tools are available:
Because sones are linear and dBA is logarithmic, there is no single, simple direct formula. However, the accepted industry standard, often used by Sengpielaudio and ventilation companies, is based on the relationship to phons (another loudness unit). The formula used to convert is generally:
