| Sones | Approx. dBA | | :--- | :--- | | 0.5 | 24 | | 1.0 | 28 | | 2.0 | 34 | | 4.0 | 40 |
[ \textdBA = 22 + 9.5 \cdot \log_10(\textSones \times 10) + \textFrequency Correction Factor ]
Or inversely:
The trouble begins when a datasheet provides a rating in Sones, but your building code requires a maximum dBA limit. Or when a client demands a specific “quiet” rating but only understands decibels. This is where the phrase becomes mission-critical.
| Sones | Approx. dBA | | :--- | :--- | | 0.5 | 24 | | 1.0 | 28 | | 2.0 | 34 | | 4.0 | 40 |
[ \textdBA = 22 + 9.5 \cdot \log_10(\textSones \times 10) + \textFrequency Correction Factor ]
Or inversely:
The trouble begins when a datasheet provides a rating in Sones, but your building code requires a maximum dBA limit. Or when a client demands a specific “quiet” rating but only understands decibels. This is where the phrase becomes mission-critical.