dB 至伏特换算

输入任意值，然后按下“计算”键来找出等量的伏特、dBV 或 dBu 值。

Volts, dBV, and dBu are three units describing voltage levels that are used interchangeably in professional audio based on the point of reference. This audio tools provides a quick and convenient means to convert between them. dBV refers to a voltage magnitude referenced to 1 volt, while dBu is referenced to 0.775 volts.

  • dBV = dBu - 2.21
  • Volts = 10(dBu / 20) x 0.775
  • dBu = dBV + 2.21
  • Volts = 10(dBV/20)
  • dBu = 20 log (Volts/0.775)
  • dBV = 20 log (Volts)

FAQs

The dB to volts calculator converts decibel values into corresponding voltage levels.

It is used when analyzing gain structure and matching signal levels between AV devices.

Yes. It is commonly used for line‑level signal calculations.

Yes. The selected reference level directly impacts the voltage calculation.