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Comparitive Examples of Noise Levels Industrial Noise Control <br /> exposure. <br /> Passenger car at 65 mph at 25 ft(77 dB);freeway at 50 ft from pavement 70 Arbitrary base <br /> edge 10 a.m.(76 dB).Living room music(76 dB);radio or TV-audio,vacuum of <br /> cleaner(70 dB). comparison. <br /> Upper 70s are ' <br /> annoyingly <br /> loud to some <br /> people. <br /> Conversation in restaurant,office,background music,Air conditioning unit at 60 Half as loud <br /> 100 feet. as 70 dB. <br /> Fairly quiet. <br /> Quiet suburb,conversation at home.Large electrical transformers at 100 feet. 50 One-fourth as <br /> loud as 70 dB. <br /> Library,bird calls(44 dB);lowest limit of urban ambient sound 40 One-eighth as <br /> loud as 70 dB. <br /> Quiet rural area. 30 One-sixteenth <br /> as loud as 70 <br /> dB.Very <br /> Quiet. <br /> Whisper,rustling leaves 20 <br /> Breathing 10 Barely audible <br /> ©2017 IAC ACOUSTICS,A DIVISION OF SOUND SEAL INC.—ALL RIGHTS RESERVED Controlling Noise in Every Environment <br /> 401 AIRPORT RD I NORTH AURORA,IL 800-954-1998 I FAX 630-966-9710 SITEMAP <br /> http://www.industrialnoisecontrol.com/comparative-noise-examples.htm[1/19/2017 11:48:11 AM] <br />