DBA Levels

Decibel Level (dBA) Source

0 - Acute threshold of hearing
15 - Threshold of hearing
30 - A whisper
45 - Rustling leaves or soft music
60 -  Normal conversation
75 - Average radio or vacuum cleaner
*82 - A very noisy restaurant (LIMIT)
90 - Lawnmower or sawzall
100 - Tractor, Leaf blower or power saw
120 - Chain saw, jack hammer or rock concert
135 - Jet take-off
140 - Gunshot or siren at 100 feet (threshold of pain)
NOTE: Decibel = A measure of loudness, or more specifically pressure. The "A" scale is noise within human hearing range.
* Levels above 82 dBA require hearing protection.
                          SONES TO DECIBELS CONVERSION
Sones =  dB        Sones =  dB        Sones =  dB       Sones =  dB        Sones =  dB
1.00        28.00   13.00      64.98   25.00     74.41   37.00     80.06   49.00      84.11
2.00        37.99   14.00      66.05   26.00     74.98   38.00     80.45   50.00      84.41
3.00        43.84   15.00      67.05   27.00     75.52   39.00     80.82   51.00      84.69
4.00        47.99   16.00      67.98   28.00     76.05   40.00     81.19   52.00      84.97
5.00        51.21   17.00      68.85   29.00     76.55   41.00     81.54   53.00      85.25
6.00        53.83   18.00      69.68   30.00     77.04   42.00     81.89   54.00      85.52
7.00        56.06   19.00      70.45   31.00     77.51   43.00     82.23   55.00      85.78
8.00        57.98   20.00      71.19   32.00     77.97   44.00     82.56   56.00      86.04
9.00        59.68   21.00      71.90   33.00     78.41   45.00     82.89   57.00      86.30
10.00      61.20   22.00      72.57   34.00     78.85   46.00     83.20   58.00      86.55
11.00      62.57   23.00      73.21   35.00     79.26   47.00     83.51   59.00      86.79
12.00      63.83   24.00      73.82   36.00     79.67   48.00     83.82   60.00      87.03