In1981,300audiencelostconsciousnessandcomaatmodernopen-airmusicheldintheUnitedStates.In1959,theUnitedStates,thereare10voluntarilymakingnoisetest,whentheexperimentalaircraftfromflyingover10volunteers10-12metershigh,sixpeoplediedonthespot.In1960,theJapanesecityofHiroshima,amanwastorturedbythenoisefromthenearbyfactory.Hekilledfactoryownersfinally.Thenoiseissoterrible!!!!!Noisemakespeopleangry.一.AboutthevoiceSound,amanifestationofvibration,travelsinwavepatternsthroughsolids,liquidsandgases.声音,振动表现,通过固体、液体和气体沿波模式振动。SoundwavesAmplitudeandwavelength振幅和波长Peoplegenerallyhearsoundsbetweenthe“thresholdofhearing”andthe“thresholdofpain”.Intermsofpressure,thisis20μPa–100Pa.Thedecibelscalewasdevelopedfromthisfactandmakesnumbersmoremanageable.Thedecibelscalegenerallyrangesfromapproximately0to130.SoundandhumanhearingThevoicepeopledon’tneedandInterferewithpeople‘snormallife,workandrestisreferredtoasNOISE.Noisecauseadverseeffectsonthesurroundingenvironment.Thiskindofsituationiscallednoisepollution.二.Aboutthenoise1.Thedefinitionofnoise2.ThecharacteristicsofthenoiseNoiseisamongthemostpervasivepollutantstodayNoiseisunavoidableformanymachinesWeexperiencenoiseinanumberofways•environmental•causeandvictim•generatedbyothers“second-hand”Noisenegativelyaffectshumanhealthandwell-beingTheairintowhichsecond-handnoiseisemittedandonwhichittravelsisacommons“.Noiseisamongthemostpervasivepollutantstoday.Whatarethenoisepollutionindailylife.Mechanicalnoise(机械噪声)Gasnoise(气体噪声)Theelectricmagneticnoise(电磁性噪声)3.ThetypesofnoiseThemostharmfulnoiseindailylifeisMechanicalnoise(机械噪声).ThemostcommonareThefactorymachineryandTrafficnoise.FactorymachineryTrafficnoiseConstructionnoiseNoisepollutionhasbecomethesecondtotheairpollutionintheenvironmentriskfactors.Whataretheharmofnoise?Whataretheimplicationsforhuman?三.TheharmofnoiseDamaginghearing,affectwork,study,restandsleep.Causingdisease,affecthumanbodyhealth.Theservicelifeofthemachineryandequipmentcanbeaffectedbystrongnoise,Thegrowthofplantsandanimalsaredamaged.Strongnoisewilltakeawayyour“ears”!!四.PreventionandcontrolofnoiseFornoiseregulation,alotofmeasurestobeadopted.Inviewoftheconstructionandthefactoryhasintroducedsomepolicies,managementandsupervisionsystemisestablished.Publicsecuritydepartmentsuperviseandmanagethetrafficnoise,noiseofsocialactivities.Railwaydepartmentssuperviseandmanagethestationusingthehornandthetrainrunningnoise.1.MeasuresforthepreventionandcontrolofindustrialnoisepollutionThenoisepollutionofindustrialenterprisesshouldtakemeasurestoreducetheimpactonthesurroundingenvironment.ComplyingwiththedischargestandardofIndustrialnoiseemissionswithinthecitylimits.2.ThemeasurestopreventthetrafficnoisepollutionItisforbiddentomanufacture,sell,excessiveamountsofimportedcarsDrivingmotorvehiclesandvesselsinthecityshouldnotbeanyinstallationanduseofthealarmDesignatingroadsandtimeforusingmotorvehiclesAutomobilemuffler(消声器)andthespeakershouldmeettherequirementsinthecitylimits.Strengtheningthemaintenance(维修保养)topreventpollution.3.TheMeasuresofpublicnoisepollutionpreventionandcontrolInapublicplace,gathering,entertainmentusespeakersthatmustbeapprovedbytheministryofpublicsecurity.Measuresshouldbetakentoavoidtheimpactontheresidentswhenusingelectricalappliances,instruments,homeentertainment,indoordecoration.Itisprohibitedtouseloudspeakersincommercialactivities.5.Takingsometechniquestoreducethenoise五.MypointofviewaboutnoisepollutionRidingabikeinsteadofdriving.Don’tuseloudspeaker.Don’tstayforalongtimeinthenoisyplace.Don'tmakeabignoiseinpublic.Teammembers:吴坤燃、王胜