Question: how to assess noise impact index? different methods for assessment of noise impact index

Answer: Painful:Noise\n\n150 dB = rock music peak\n\n140 dB = firearms, air raid siren, jet engine\n\n130 dB = jackhammer\n\n120 dB = jet plane take-off, amplified rock music at 4-6 ft., car stereo,\n\nband practice\n\nExtremely loud:\n\n110 dB = rock music, model airplane\n\n106 dB = timpani and bass drum rolls\n\n100 dB = snowmobile, chain saw, pneumatic drill\n\n90 dB = lawnmower, shop tools, truck traffic, subway\n\nVery loud:\n\n80 dB = alarm clock, busy street\n\n70 dB = busy traffic, vacuum cleaner\n\n60 dB = conversation, dishwasher\n\nModerate:\n\n50 dB = moderate rainfall\n\n40 dB = quiet room\n\nFaint:\n\n30 dB = whisper, quiet library
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