Power ratio to decibel converter

Simply enter the ratio numerator and denominator and the Ratio to Percentage Calculator will automatically convert the ratio to a percentage. Please note that the formula for each calculation along with detailed calculations is shown further below this page. This function converts the linear relationship between two voltages or powers into decibels, and decibels in power or voltage gain or attenuation.

With the radio button you can choose between the following calculations Convert voltage difference to db Convert power difference to db Convert decibel value into voltage difference Convert decibel value into difference in power. The logarithmic unit of measurement for describing the relationship between two power values is the Bel.

It is calculated using the formula:. Convert voltage, power and decibels Calculators and formulas for converting between voltage, power and decibels. Online calculator.

This would mean that a 0 dB setting on the attenuator would cause a 10 watt output and thus just saturate the amplifier. This avoids risk of accidental interference to other people and damage to the expensive power amplifier. To convert a ratio to dB, do log and then times by Ten times 3. Do 10 1. Also equal to dBW. Sound field quantities Sound pressure, sound or particle velocity, particle displacement or displacement amplitude, voltage, current, electric resistance. Sound energy quantities Sound intensity, sound energy density, sound energy, acoustic power.

Sound pressure Sound field size. The sound pressure p is the sound pressure that is specified as an rms value and of the static pressure p St air pressure of the surrounding air is superimposed. Sound intensity Sound energy size. Sound intensity level. Sound field sizes: sound pressure, particle velocity, particle amplitude. Field sizes, such as the sound pressure are always expressed in RMS.

This is mainly proportional to the electric voltage V. Sound energy sizes: sound intensity, sound energy, sound energy density, acoustic power. This is mainly proportional to the electric power P. Decibel scale for linear field sizes, like volts and sound pressures. The logarithmic scale ratio. Sound pressure and sound pressure level.