TYPICAL SOUND LEVELS Jet takeoff (200 feet) 120 dBA Construction Site 110 dBA Intolerable Shout (5 feet) 100 dBA Heavy truck (50 feet) 90 dBA Very noisy Urban street 80 dBA Automobile interior 70 dBA Noisy Normal conversation (3 feet) 60 dBA Office, classroom 50 dBA Moderate Living room 40 dBA …
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