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Relative loudness <br /> L. Subjective Community Home or industry (human judgement <br /> 7 Y Y of different <br /> (dBA) impression (outdoor) (indoor) sound levels) <br /> Military jet aircraft <br /> 130 takeoff with after- 32 times as loud <br /> burner from aircraft <br /> carrier at 50 to 130 Oxygen torch <br /> dBA) (121dBA) <br /> Uncomfort- <br /> 120 . ably Loud 16 times as loud <br /> Turbofan aircraft <br /> at takeoff power <br /> under flight at <br /> 200 ft (118dBA) Riveting machine <br /> (110 dBA) . Rock- <br /> n-roll band (108- <br /> 114 dBA) <br /> 110 8 times as loud <br /> Same jet flyover at <br /> 1000 ft (103dBA) . <br /> Boeing 707 , DC8 at <br /> 6080 ft before <br /> landing (106dBA) . <br /> Bell J-2A helicopter <br /> at 100 ft (100dBA) <br /> Very <br /> 100 Loud 4 times as loud <br /> Boeing 737 , DC-9 at <br /> 6080 ft before Newspaper press <br /> landing (97dBA) ; (97 dBA) <br /> Motorcycle at 25 ft <br /> 90 dBA) <br /> 90 2 times as loud <br /> Car wash at 20 ft <br /> (89 dBA) . Prop. Food blender (88dBA) <br /> Plane flyover at <br /> 1000 ft (88dBA) . Milling machine (85dBA) <br /> Diesel truck 40 mph <br /> at 50 ft (84dBA) . Sarbage Disposal (80dBA) <br /> Diesel train 45 mph <br /> at 100 ft (83dBA) . <br /> Power mower at 25 ft <br /> (85dBA) . <br /> 80 Moderately Reference <br /> Loud Loudness <br /> High urban ambient <br /> sound (80dBA) . Living room music <br /> Passenger car 65mph (76dBA) . <br /> at 25 ft (77dBAl . <br /> Freeway at 50 ft TV-audio, vacuum <br /> from pavement edge cleaner (70dBA) . <br /> 10 AM (76dBA) . <br /> 70 1/2 as loud <br /> Cash register at 10 ft <br /> 65-70 dBA) . Electric <br /> typewritter at 10 ft <br /> 64-66**** (64dBA) . Dishwasher <br /> rinse at 110 ft (60dBA) . <br /> Conversation (60dBA) . <br /> 60 1/4 as loud <br /> Airconditioning <br /> condensing unit <br /> at 15 ft (55dBA) . <br /> Large transformers <br /> at 100 ft (50-60dBA) . <br /> 50 - 1/8 as loud <br /> Quiet <br /> Bird calls (44dBA) . <br /> Lower limit urban <br /> daytime ambient <br /> 40 - noise (40dBA) <br /> [Scale interrupted -" 1/16 as loud <br /> 10 Just audible <br /> **** Noise levels for Can-AM racetrack as <br /> Threshold of determined by tests performed by <br /> Hearing L.W. Sandow & Associates , Menominee <br /> 0 Falls, Wisconsin for Johnson Kart <br /> Manufacturing Company, Milwaukee, Wis. <br />