((exclusive)) | Sone 134

Bathroom fans aim for near-silence (under 1 sone = ~28 dB). Industrial fans move massive air volumes, creating unavoidable turbulence noise. 134 sones is considered unacceptably loud for residential but tolerable for short-term industrial use with PPE.

is a unit used to measure how loud a sound is perceived by the human ear. Definition: sone 134

The lady did not just take the message; she took the messenger. Bathroom fans aim for near-silence (under 1 sone = ~28 dB)

Prolonged or even brief exposure to 134 sones poses severe risks: is a unit used to measure how loud

| Sones | Phons (approx) | Decibels (approx) | Perceived Loudness | Real-World Example | |-------|----------------|-------------------|--------------------|--------------------| | 1 | 40 | 40 dB | Very quiet | Quiet library | | 4 | 50 | 50 dB | Quiet | Light rain | | 16 | 60 | 60 dB | Moderate | Normal conversation | | 64 | 70 | 70 dB | Loud | Vacuum cleaner | | 128 | 80 | 80-85 dB | Very loud | Heavy traffic | | | 112 | ~120 dB | Pain threshold | Rock concert, jet takeoff (150m) | | 256 | 90 | 90-100 dB | Deafening | Chainsaw |