【英文标准名称】:StandardTestMethodforObjectiveMeasurementoftheSpeechPrivacyProvidedbyaClosedRoom
【原文标准名称】:用封闭房间提供的隔音客观测量用标准试验方法
【标准号】:ASTME2638-2010
【标准状态】:现行
【国别】:
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E33.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:隔音;声音安全;封闭房间;房间吸音
【英文主题词】:speechprivacy;speechsecurity;Closedroom;Roomsoundabsorption;Speechprivacy
【摘要】:Thistestmethodprovidesameansofmeasuringthesoundisolationbetweentheinteriorofaclosedroomandlocationsoutsidetheroom,andalsothebackgroundnoiselevelsatthelocationsoutsidetheroom.Theresultscanbeusedtoratethedegreeofspeechprivacy,ortoestimatetheprobabilityofspeechbeingintelligibleoraudibleateachreceivingpoint.Peoplespeakatdifferentlevelsandvarytheirvoicelevelinreactiontoroomnoiseandotheracousticalfactors.Consequentlyitisnotpossibletosaydefinitelywhetheraroomisprotectedagainsteavesdropping.Onecanonlyassignaprobabilityofbeingoverheard.Theownersormanagersoftheclosedroomunderconsiderationmustsetcriteriaforthisprobabilityaccordingtotheirspecificgoalsandcircumstances.Thenon-mandatoryappendixgivesanapproachtosettingcriteria.1.1Thistestmethoddescribesatestprocedureformeasuringthedegreeofspeechprivacyprovidedbyaclosedroom,forconversationsoccurringwithintheroom,andwithpotentialeavesdropperslocatedoutsidetheroom.1.2Thedegreeofspeechprivacymeasuredbythismethodisthatduetothesoundinsulationoftheroomstructurethewalls,floor,ceilingandanyotherelementsoftheroomboundariesandtothebackgroundnoiseatlisteningpositionsoutsidetheclosedtheroom.1.3Potentialeavesdroppersareassumedtobeunaidedbyelectronicorelectroacousticequipment,andnottouchingtheroomboundaries.Determinedeffortstoeavesdroparenotaddressed.1.4Themethodmaybeappliedtoanyenclosedroom,whetherspecificallyintendedtobeprotectedagainsteavesdroppingornot.1.5Themethoddoesnotsetcriteriaforadequatespeechprivacy.Anon-mandatoryappendixprovidesguidanceonhowtheresultsofthistestmethodmaybeusedtoestimatetheprobabilityofaneavesdropperbeingabletounderstandspeechoutsideaclosedroom,andhowtosetcriteriaforsuchrooms.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P31
【国际标准分类号】:91_120_20
【页数】:8P.;A4
【正文语种】: