Loudness | Sones

S=2(P−40)/10cap S equals 2 raised to the open paren cap P minus 40 close paren / 10 power (Where S is sones and P is phons) Common Sone Ratings in Daily Life

This is the most practical use of sones. Range hoods list their loudness in sones. loudness sones

| Decibels (dB) | Perceived Loudness (Sones) | Real-World Example | | :--- | :--- | :--- | | 40 dB | 1 Sone | Quiet office, bird calls | | 50 dB | 2 Sones | Light rain, moderate refrigerator | | 60 dB | 4 Sones | Normal conversation, dishwasher | | 70 dB | 8 Sones | Vacuum cleaner, busy traffic | | 80 dB | 16 Sones | Garbage disposal, alarm clock (2 feet away) | | 100 dB | 64 Sones | Pneumatic drill, loud concert | S=2(P−40)/10cap S equals 2 raised to the open