Our hearing is a subjective measure of sound; or is it an objective measure of sound level? I think it is loud. No, I disagree; it is not as loud as I thought. When a Plant Manager said it is not loud enough to wear hearing protection ear-plugs, he may well be cited by OSHA for violations. Both way, we pay money to create and we pay to eliminate, sound. Let´s take a look at how much noise FANs inside a PC make.



Link: Madshrimps