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You must accept these three hard truths about sone-to-dBA conversion:
| Measured dBA (Fan noise) | Verified Sones | | :--- | :--- | | 30 dBA | 0.6 sones | | 35 dBA | 1.0 sones | | 40 dBA | 1.7 sones | | 45 dBA | 2.9 sones | | 50 dBA | 5.0 sones | | 55 dBA | 8.6 sones | | 60 dBA | 14.8 sones | sone to dba verified
The most commonly accepted and verified formula for converting sones to A-weighted decibels is: You must accept these three hard truths about
Data derived from industry sources
(per ISO 532).
To move from theory to practice, follow this verification protocol. This is the standard procedure used by acoustic testing labs (e.g., Intertek, UL, NVLAP). sone to dba verified