Sone To Dba Verified 〈480p – HD〉

If the resulting dBA matches the Sone-based expectation within ±2 dB for a given product category, your conversion is “verified.” If not, you have uncovered a mismatch: either the Sone rating was measured under different conditions (e.g., free-field vs. reverberant) or the frequency spectrum has changed (e.g., duct-mounted vs. open inlet).