dB Values vs. Amplitude Level Ratios
The following table relates dB values to amplitude ratios:
|
dB Change |
Linear Level Ratio |
dB Change |
Linear Level Ratio |
|
0
|
1
|
30
|
31
|
|
3
|
1.4
|
36
|
60
|
|
6
|
2
|
40
|
100
|
|
10
|
3.1
|
50
|
310
|
|
12
|
4
|
60
|
1000
|
|
18
|
8
|
70
|
3100
|
|
20
|
10
|
80
|
10,000
|
|
24
|
16
|
100
|
100,000
|
It is strongly recommended that VdB be used as the vibration amplitude scaling because so much more information is available to the viewer compared to linear amplitude units. Also, compared to a conventional log scale, the dB scale is much easier to read.