ASTM E1130-2008 使用声音清晰度指数在开放式空间对谈话保密性进行客观量度的标准试验方法

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【英文标准名称】:StandardTestMethodforObjectiveMeasurementofSpeechPrivacyinOpenPlanSpacesUsingArticulationIndex
【原文标准名称】:使用声音清晰度指数在开放式空间对谈话保密性进行客观量度的标准试验方法
【标准号】:ASTME1130-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E33.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:architecturalacoustics;articulationindex;fieldtest;openoffice;openofficesystem;open-planspace;speechprivacy;Acousticaltests;Ambientsoundpressurelevels;Attenuation;Bandfiltersets;Fieldtesting--soundtransmission;Filters/fil
【摘要】:Thespeechprivacybetweenlocationsinanopenplanspaceisdeterminedbythedegreetowhichintrudingspeechsoundsexceedtheambientsoundpressurelevelsatthelistener''sear;aclassicsignal-to-noiseratiosituation.Thesoundpressurelevelsatthelistener''searfromintrudingspeechdependupon:Theindividualvocaleffortandorientationofthetalker,Theattenuationofspeechsignalsduetodistanceorinterveningbarriers,andThereinforcementofspeechsignalsduetoreflectionsfromsurfacessuchastheceiling,furniturepanels,lightfixtures,walls,orwindows.Theambientsoundpressurelevelswilloftenbecontrolledtomaskintrudingspeech.Thisisaccomplishedbymeansofamaskingsoundsystem.However,incertainpositionsandfrequencyranges,heating,ventilating,orairconditioningequipment(HVAC)maycontributesignificantlytoambientsoundpressurelevels.TheprimarypurposeofthistestmethodistomeasurethespeechprivacyforanaveragespeechspectrumusingthestandardArticulationIndexmethod.Thisrequiresmeasurementoftherelevantacousticalcharacteristicsdiscussedin5.2and5.3forapairoflocationsandcalculationoftheArticulationIndexusinganaveragespeechspectrum.Theaveragespeechspectrumisformaletalkersspeakingwithnormalvoiceeffort.TheArticulationIndexrangesfrom0.00,wherespeechisunintelligible,to1.00,whereallindividualspokenwordscanbeunderstood.Cautionshouldbeexercisedininterpretingthenumericalresultsofthistestmethod.ThereisaneedforfurtherresearchtoestablishtherelationshipofArticulationIndextospeechprivacy.Onepurposeofthistestmethodistoencouragethemeasurementofdataandfurtherresearchonthistopicperhapsleadingtodevelopmentofwell-documentedspeechprivacycategoriesandcriteria.Thistestmethodcanbeusedto:Comparetherelativeprivacyaffordedbetweendifferentlocationswithinopenplanspaces.Evaluatehowchangesinopenplancomponents(barriers,furniture,ceilings,maskingsound,orwallpanels)affectspeechprivacy.Measurespeechprivacyobjectivelyforcorrelationwithsubjectiveresponses.Thistestmethodcouldbeoneelementofaperformanceoracceptancetestprocedure.However,manyadditionalitemswouldneedtobespecifiedtousethistestmethodforperformancetestingofanopenplanenvironment,suchas,thenumberoflocationstobetestedandmethodofselectingthoselocations,andthemethodofaveragingtheresults.SpecifyinganumericalcriterionintermsoftheArticulationIndexisalsonecessaryforacceptancetesting;however,theselectionofsuchacriterionandpermissibledeviationsshouldbeundertakenwithcareinviewofthepresentstate-of-the-artasdiscussedin5.5.1.1Thistestmethoddescribesameansofmeasuringspeechprivacyobjectivelybetweenlocationsinopenplanspaces.Thistestmethodreliesuponacousticalmeasurements,publishedinformationonspeechlevels,andstandardmethodsforassessingspeechcommunication.Thistestmethoddoesnotmeasuretheperformanceofindividualopenplancomponentswhichaffectspeechprivacy;itmeasurestheprivacywhichresultsfromaparticularconfigurationofcomponents(1,2).1.2Thistestmethodisintendedtobeafieldtestforthemeasurementofspeechprivacyinactualopenplanspaces.However,thistestmethodcouldbeusedinanenvironmentarrangedtosimulateanopenplanspace.1.3Thistestmethodissuitableforuseinmanyopenplanspacessuchasopenplanoffices,healthcarespaces,institutionalspaces,schools,etc.Itisnotapplicableformeasuringthespeechprivacybetweenopenplanandenclosedspacesorbetweenfullyenclo......
【中国标准分类号】:P31
【国际标准分类号】:17_140_01
【页数】:6P.;A4
【正文语种】:英语