Howtosignalprocessing
dB to ratio conversion table
| dB | Amplitude ratio | Power ratio |
|---|---|---|
| 1 dB | 1.122 | 1.259 |
| 2 dB | 1.259 | 1.585 |
| 3 dB | 1.413 | 2 ≈ 1.995 |
| 6 dB | 2 ≈ 1.995 | 3.981 |
- How do you convert amplitude to dB?
- What is 20 dB equal to?
- What is 10 decibels equal to?
- How to convert dB to hz?
How do you convert amplitude to dB?
Decibels are a relative unit, they express the power of your signal relative to some reference power. If you are working with amplitudes, then the formula is: power_db = 20 * log10(amp / amp_ref); (See http://en.wikipedia.org/wiki/Decibel#Field_quantities).
What is 20 dB equal to?
When talking about voltage, 6dB represents a ratio of two to one or a doubling of voltage. 20dB would represent a ratio of ten to one for voltage - so 20 dB would be 10 times the voltage. A 40dB voltage gain would be 100 times the voltage.
What is 10 decibels equal to?
10 dB: Normal breathing. 20 dB: Whispering from five feet away. 30 dB: Whispering nearby.
How to convert dB to hz?
Decibel is a unit of intensity and hertz is a unit of frequency, no direct conversion exists between them.
