3000W Chinese Gensets Info.
professor95 wrote: EDIT ADDED 45/5/2013- When this thread started in March of 2005, I never expected to see it survive this long or amass the quantity of information that has been shared here. In...
Forum Discussion
professor95 wrote:MrWizard wrote:
3db on the db meter is a doubling of the energy the meter reads from source of the sound
most people barely detect the 3db difference
it takes 10db on the meter for the human perception to sense it as a doubling of sound level
While what you say is true, there is one other issue that should be considered. Lowering the sound level by 3 db reduces the sound (air) pressure enough that the distance at which the sound can be heard is significantly reduced.
A 65 vs. 68 db noise may sound the same when standing next to the noise source, but move back 35 or so feet and the 3 db loss really makes a difference.
yes it does, and the lower the level, the less it will carry, but that was not the question, the question was about the change in sound level , human perception can detect
