12 SolutionThis is the equation of the sound power level exp

Solution

This is the equation of the sound power level expressed in decibels. The basic formular is

Sound (in decibels) (or sound power level, PWL) = 10 log ( E/E_r)

Where E = actual accoustic energy level and E_r is the reference energy

Here the E_r or reference energy = 10^-12 and x is the E (actual accoustic energy)