Sound pressure levels

This table shows sound pressure levels in decibels and what this means in terms of intensity and power ratios.


Decibels Intensity (or Power) Ratio Pressure (or Current or Voltage) Ratio Pressure Ratio as a Power of 10 Sound Pressure (mPa) Nepers
0 1 1 0 0.02 0
10 10 3.16 0.5 0.06 1.15
20 100 10 1 0.2 2.3
30 1000 31.62 1.5 0.63 3.45
40 10000 100 2 2 4.61
50 100000 316.23 2.5 6.32 5.76
60 1000000 1000 3 20 6.91
70 10000000 3162.28 3.5 63.25 8.06
80 100000000 10000 4 200 9.21
90 1000000000 31622.78 4.5 632.46 10.36
100 10000000000 100000 5 2000 11.51
110 100000000000 316227.77 5.5 6324.56 12.66
120 1000000000000 1000000 6 20000 13.82
           
-96 0 0 -4.8 0 -11.05