Originally Posted by BarryD0706
Power doubles every 3dB. Not sure what "sound" is.
Sound level is commonly used as a short version for sound pressure level.
Lp = 10 log( p2 / pref2 ) = 10 log( p / pref )2 = 20 log ( p / pref ) (1)
Lp = sound pressure level (dB)
p = sound pressure (Pa)
pref = 2 10-5 - reference sound pressure (Pa)
If the pressure is doubled, the sound pressure level is increased with 6 dB (20 log (2)).
So with every 6 dB the sound pressure double and it is twice as loud to our ears.
Power is irrelevant in this context.