【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Engineeringmethodinanessentiallyfreefieldoverareflectingplane(ISO3744:1994);EnglishversionofDINENISO3744:2009-11
【原文标准名称】:声学.声压法测定噪声源的声功率级.反射面上近似自由场的工程法(ISO3744:1994),ENISO3744:2009的德文版本
【标准号】:DINENISO3744-2009
【标准状态】:作废
【国别】:德国
【发布日期】:2009-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Absorption;Acousticmeasurement;Acoustictesting;Acoustics;Calibration;Clay;Definitions;Determination;Earprotectors;Envelopingsurfacemethods;Environment;Externalnoise;Fixings;Installations;Mathematicalcalculations;Measurement;Measurementduration;Measuringinstruments;Measuringsurfaces;Measuringtechniques;Methods;Methodsofcalculation;Microphones;Noise;Noise(environmental);Noisemeasurements;Noisesources;Operation;Precision;Reflective;Rooms;Soundabsorption;Soundfields;Soundintensity;Soundlevel;Soundlevels;Soundpower;Soundpressure;Soundsources;Specification(approval);Standarddeviation;Testequipment;Testing;Testingconditions
【摘要】:1.1GeneralThisInternationalStandardspecifiesamethodformeasuringthesoundpressurelevelsonameasure-mentsurfaceenvelopinganoisesource,underes-sentiallyfree-fieldconditionsnearoneormorereflectingplanes,inordertocalculatethesoundpowerlevelproducedbythenoisesource.Itgivesrequirementsforthetestenvironmentandinstru-mentation,aswellastechniquesforobtainingthesurfacesoundpressurelevelfromwhichthesoundpowerlevelofthesourceiscalculated,leadingtore-sultswhichhaveagrade2accuracy.Itisimportantthatspecificnoisetestcodesforvari-oustypesofequipmentbeestablishedandusedinaccordancewiththisInternationalStandard.Foreachtypeofequipment,suchnoisetestcodeswillgivedetailedrequirementsonmounting,loadingandop-eratingconditionsfortheequipmentundertestaswellasaselectionofthemeasurementsurfaceandthemicrophonearrayasspecifiedinthisInternationalStandard.NOTE1Thenoisetestcodeforaparticulartypeofequipmentshouldgivedetailedinformationontheparticularsurfacethatisselected,astheuseofdifferentlyshapedmeasurementsurfacesmayyielddifferingestimatesofthesoundpowerlevelofasource.1.2TypesofnoiseandnoisesourcesThemethodspecifiedinthisInternationalStandardissuitableformeasurementsofalltypesofnoise.NOTE2Aclassificationofdifferenttypesofnoise(steady,non-steady,quasi-steady,impulsive,etc.)isgiveninISQ2204.ThisInternationalStandardisapplicabletonoisesourcesofanytypeandsize{e.g.device,machine,component,sub-assembly).NOTE3MeasurementsaccordingtothisInternationalStandardmaybeimpracticableforverytallorverylongsourcessuchaschimneys,ducts,conveyorsandmulti-sourceindustrialplants.1.3TestenvironmentThetestenvironmentthatisapplicableformeasure-mentsmadeinaccordancewiththisInternationalStandardisanessentiallyfreefieldnearoneormorereflectingplanes(indoorsoroutdoors).
【中国标准分类号】:
【国际标准分类号】:17_140_01
【页数】:42P.;A4
【正文语种】:英语


【英文标准名称】:Consumeraudio/videoequipmentdigitalinterfacewithplasticopticalfibre(IEC62300:2004);GermanversionEN62300:2005
【原文标准名称】:带塑料光纤的用户音频/视频设备数字接口
【标准号】:DINEN62300-2005
【标准状态】:现行
【国别】:德国
【发布日期】:2005-06
【实施或试行日期】:2005-06-01
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:传输协议;电子仪器;数字信号;纤维光学;接口;适配器;娱乐电子学;塑料;光学纤维;光学接口;数据交换;音频设备;数字的;电气工程;电力连接接口;定义;特性;数据处理;视频设备
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiestheprincipalelectricalandopticalparametersforaconsumeraudio/videoequipmentdigitalinterfacethatusesplasticopticalfibre(POF).
【中国标准分类号】:M33
【国际标准分类号】:33_160_01;33_180_20
【页数】:16P;A4
【正文语种】:德语