| Sones | Approx. dBA | | :--- | :--- | | 0.5 | 24 | | 1.0 | 28 | | 2.0 | 34 | | 4.0 | 40 |
are linear; 2.0 sones is perceived as exactly twice as loud as 1.0 sone. sone to dba verified
: L_A ≈ 40 + 10 * log2(N) where N = loudness in sones, L_A = dB(A). | Sones | Approx