IFA - Technical Information: Noise reduction
The efficacy of low-noise saw blades can be seen from the fact that a reduction of 3 dB equates to halving of the sound energy, and thus significantly reduces the risk of harm to the hearing. A noise level reduced by 10 dB is perceived by humans as being only half as loud. The noise protection worksheet IFA-LSA 02-375 for low-noise diamond ...
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