DECIBELS, DBu Etc.
| dBu |
Voltage |
|
dBu |
Voltage |
NOTES
- The table shows the voltage equivlent to a given level in dBu from +40 dBu to -40 dBu
- dBu is a logrithmic voltage notation relative to 0.7746 Volts but not related to any impedance.
- dBm (the traditional unit 50 years ago) is relative to 1 mW into 600 ohms and is numerically equal to dBu.
- dBV (rarely used) is relative to 1.0 Volts and like dBu, is not related to any impedance.
- Comments and questions to support@sowter.co.uk
OTHER USEFUL INFORMATION
- To convert max level at 50 Hz to 20 Hz subtract 7.96 dB
- To convert an rms voltage to a peak voltage multiply by 1.414
- To convert an rms voltage to a p-p voltage multiply by 2.828
|
| 0 |
0.7746 |
0 |
0.7746 |
| 1 |
0.8691 |
-1 |
0.6904 |
| 2 |
0.9752 |
-2 |
0.6153 |
| 3 |
1.0941 |
-3 |
0.5484 |
| 4 |
1.2277 |
-4 |
0.4887 |
| 5 |
1.3774 |
-5 |
0.4356 |
| 6 |
1.5455 |
-6 |
0.3882 |
| 7 |
1.7341 |
-7 |
0.3460 |
| 8 |
1.9457 |
-8 |
0.3084 |
| 9 |
2.1831 |
-9 |
0.2748 |
| 10 |
2.4495 |
-10 |
0.2449 |
| 11 |
2.7484 |
-11 |
0.2183 |
| 12 |
3.0837 |
-12 |
0.1946 |
| 13 |
3.4600 |
-13 |
0.1734 |
| 14 |
3.8822 |
-14 |
0.1546 |
| 15 |
4.3559 |
-15 |
0.1377 |
| 16 |
4.8874 |
-16 |
0.1228 |
| 17 |
5.4837 |
-17 |
0.1094 |
| 18 |
6.1528 |
-18 |
0.0975 |
| 19 |
6.9036 |
-19 |
0.0869 |
| 20 |
7.7460 |
-20 |
0.0775 |
| 21 |
8.6911 |
-21 |
0.0690 |
| 22 |
9.7516 |
-22 |
0.0615 |
| 23 |
10.9415 |
-23 |
0.0548 |
| 24 |
12.2765 |
-24 |
0.0489 |
| 25 |
13.7745 |
-25 |
0.0436 |
| 26 |
15.4552 |
-26 |
0.0388 |
| 27 |
17.3411 |
-27 |
0.0346 |
| 28 |
19.4570 |
-28 |
0.0308 |
| 29 |
21.8311 |
-29 |
0.0275 |
| 30 |
24.4949 |
-30 |
0.0245 |
| 31 |
27.4837 |
-31 |
0.0218 |
| 32 |
30.8372 |
-32 |
0.0195 |
| 33 |
34.6000 |
-33 |
0.0173 |
| 34 |
38.8218 |
-34 |
0.0155 |
| 35 |
43.5588 |
-35 |
0.0138 |
| 36 |
48.8737 |
-36 |
0.0123 |
| 37 |
54.8372 |
-37 |
0.0109 |
| 38 |
61.5284 |
-38 |
0.0098 |
| 39 |
69.0360 |
-39 |
0.0087 |
| 40 |
77.4597 |
-40 |
0.0077 |
|
