Quote:
Originally Posted by skylineslider  +1 db is a doubling in volume sothats a large error range imo,it cost me nearly 300 to buy a decent db meter setup,i cant see how these are that useful
fwiw my 140db stereo measured 103db on one of these |
FAIL
dB sound pressure levels operate on a logarithmic scale, +3dB is a doubling of actual energy, +10dB is a perceived doubling of loudness by a human ear. Sound meter readings also depend on the weighting coefficients that you are using and averaging settings etc etc. A perfect human ear can only just detect a 1dB change in sound pressure level and I seriously hope you didnt spend £300 on a sound meter if you dont have a clue about acoustics! - I also doubt your stereo is 140dB (maybe at one or two tiny impulses)- equivalent sound pressure to sub 100 feet from a jumbo jet engine at full thrust, or to put it another way, the maximum recommended sound pressure whilst wearing ear defenders!