ABSTRACT
For sound power levels the reference power is taken as 10−12 watts. Therefore, if a source is 100 times more powerful than this it will measure as 20 dB, and if it is 1000 times more powerful it will measure as 30 dB.
For sound power levels the reference power is taken as 10−12 watts. Therefore, if a source is 100 times more powerful than this it will measure as 20 dB, and if it is 1000 times more powerful it will measure as 30 dB.