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iparative Examples of Noise Levels I Real World Examples and Decibel Levels 1Industrial Noise Control <br /> 10 6 iNA <br /> Y _ <br /> r <br /> o a e or <br /> Comparative Examples of Noise Sources, Decibels <br /> &Their Effects <br /> i Noise Source. Decibel E=m <br /> Level <br /> Jet take-off(at 25 meters) 150 Eardrum <br /> rupture <br /> Aircraft carrier deck I 140 <br /> Military jet aircraft take-off from aircraft carrier with afterburner at 50 ft <br /> (130 dB). 130 <br /> Painful.32 <br /> Thunderclap,chain saw.Oxygen torch(121 dB). 120 times as <br /> loud as 70 <br /> dB. <br /> Average <br /> Steel mill,auto hom at 1 meter.Turbo-fan aircraft at takeoff power at human pain <br /> 200 ft(118 dB). Riveting machine(I 10 dB);live rock music(108- 110 threshold. <br /> 114 dB). 16 times as <br /> loud as 70 <br /> dB. <br /> 8 times as <br /> Jet take-off(at 305 meters),use of outboard motor,power lawn loud as 70 <br /> mower,motorcycle,farm tractor,jackhammer,garbage truck.Boeing dB.Serious <br /> 707 or DC-8 aircraft at one nautical mile(6080 ft)before landing(106 100 damage <br /> dB);jet flyover at 1000 feet(103 dB); Bell J-2A helicopter at 100 ft possible in <br /> (100 dB). 8 hr <br /> exposure <br /> 4 times as <br /> Boeing 737 or DC-9 aircraft at one nautical mile(6080 ft)before loud as 70 <br /> landing(97 dB); power mower(96 dB);motorcycle at 25 ft(90 dB). 90 dB.Likely <br /> Newspaper press(97 dB). damage 8 <br /> hr exp <br /> 2 times as <br /> Garbage disposal,dishwasher,average factory,freight train(at 15 loud as 70 <br /> meters).Car wash at 20 ft(89 dB);propeller plane flyover at 1000 ft dB. <br /> (88 dB);diesel truck 40 mph at 50 ft(84 dB);diesel train at 45 mph 80 Possible <br /> at 100 ft(83 dB).Food blender(88 dB);milling machine(85 dB); damage in <br /> garbage disposal(80 dB). 8 hr <br /> exposure. <br /> Arbitrary <br /> base of <br /> comparison. <br /> Passenger car at 65 mph at 25 ft(77 dB);freeway at 50 ft from Upper 70s <br /> pavement edge 10 a.m.(76 dB). Living room music(76 dB);radio or 70 are <br /> TV-audio,vacuum cleaner(70 dB). annoyingly <br /> loud to <br /> some <br /> people. <br /> i Conversation in restaurant,office,background music,Air conditioning Half as loud <br /> unit at 100 ft <br /> 60 as 70 dB. <br /> Fairly quiet <br /> Quiet suburb,conversation at home.Large electrical transformers at One-fourth <br /> 100 ft 50 as loud as <br /> 70 dB. <br /> I One-eighth <br /> Library,bird calls(44 dB);lowest limit of urban ambient sound 40 as loud as <br /> 70 d6. <br /> One- <br /> sixteenth as <br /> Quiet rural area 30 loud as 70 <br /> dB.Very <br /> Quiet <br /> Whisper,rustling leaves 20 <br /> Breathing 10 Barely <br /> audible <br /> [modified from http://www.wenet.net/—hpb/dblevels.htmg on 22000. <br /> SOURCES:Temple University Department of Civil/Environmental Engineering <br /> (www.temple.edu/departments/CETP/environl0.html), and Federal Agency Review of Selected <br /> Airport Noise Analysis Issues,Federal Interagency Committee on Noise(August 1992). <br /> Source of the information is attributed to Outdoor Noise and the Metropolitan Environment, <br /> M.C.Branch et al.,Department of City Plannin , Ci of Los Angeles,.1970. <br /> al <br /> `__ .x• <br /> 0,10 <br />