Enter the total sound level (dB) and the total voltage (volts) into the Calculator. The calculator will evaluate the Db Voltage Ratio. 

Db Voltage Ratio Formula

DBV = dB / V


  • DBV is the Db Voltage Ratio ()
  • dB is the total sound level (dB)
  • V is the total voltage (volts)

To calculate Db Voltage Ratio, divide the sound level in decibels by the total voltage in volts.

How to Calculate Db Voltage Ratio?

The following steps outline how to calculate the Db Voltage Ratio.

  1. First, determine the total sound level (dB). 
  2. Next, determine the total voltage (volts). 
  3. Next, gather the formula from above = DBV = dB / V.
  4. Finally, calculate the Db Voltage Ratio.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total sound level (dB) = 40

total voltage (volts) = 200

Frequently Asked Questions

What is the significance of calculating the Db Voltage Ratio?

Calculating the Db Voltage Ratio is crucial for understanding the efficiency and performance of audio equipment. It helps in comparing the loudness level to the voltage required, thus giving an insight into the power efficiency of the device.

How does the sound level in decibels (dB) relate to our perception of loudness?

The sound level in decibels is a logarithmic unit that measures the intensity of sound. Every 10 dB increase represents a tenfold increase in sound intensity, but subjectively, this corresponds to approximately twice the perceived loudness.

Can the Db Voltage Ratio be used for all types of audio equipment?

Yes, the Db Voltage Ratio can be applied to various types of audio equipment, including speakers, amplifiers, and microphones, to assess their efficiency and performance in terms of power usage and sound output.

What are some common mistakes to avoid when calculating the Db Voltage Ratio?

Common mistakes include not converting units where necessary, inaccurately measuring the sound level or voltage, and misapplying the formula due to misunderstanding the variables involved. Ensuring accurate measurements and understanding the formula are key to avoiding these mistakes.