【英文标准名称】:Acoustics-Determinationofsoundinsulationperformancesofenclosures-Measurementsunderlaboratoryconditions(fordeclarationpurposes)
【原文标准名称】:声学.隔音罩隔声性能的测定.实验室条件下的测量(申报用)
【标准号】:BSENISO11546-1-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-11-15
【实施或试行日期】:1996-11-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:声学试验;试验设备;声学;实验室试验;性能试验;试验条件;声学设备;声学测量;隔音;噪声;噪声控制;外壳;声试验;噪声(环境的);声测量
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Capsules;Definitions;Determination;Ear-mufftypewearingprotectors;Efficiency;Enclosures;Insertionloss;Laboratorytesting;Laboratorytests;Marking;Measurement;Measuringequipment;Measuringincertainity;Measuringinstruments;Measuringtechniques;Noiseabatement;Noisecontrol(acoustic);Noise(environmental);Noisereduction;Performancetests;Protection;Sound;Soundcontrolmeans;Sounddeadening;Soundinsulation;Soundlevel;Soundpressure;Soundsources;Testobject;Testing;Testingconditions
【摘要】:ThispartofISO11546specifieslaboratorymethodsforthedeterminationofthesoundinsulationper-formance(insertionloss)ofsmallmachineenclos-ures.Itappliestoatotalenclosureonlyandnottothein-dividualpanelsfromwhichtheenclosureismade.NOTES1Soundinsulationforenclosurepanelssuchaswallel-ements,doors,windows,silencers,etc.shouldbemeasuredinaccordancewithotherrelevantstandards.2Relatedstandardsconcernnoise-attenuationmeasure-mentsofenclosuresinsitu(ISO11546-2)andcabins(ISO11957).ThemeasurementmethodsspecifiedinthispartofISO11546arebasedonInternationalStandardsintheseriesISO3740,ISO9614andISO11200(seetable1).Dependingonthemethodchosen,thesoundinsulationperformance(insertionloss)oftheenclos-ureisdeterminedintermsofthereductionofsoundpowerlevelorsoundpressurelevel.Methodsaregivenformeasurementswheretheenclosuresur-roundstheactualsoundsource(machine).Wherethesemethodsarenotpracticable,alternativemeasurementscanbeperformedusingareciprocitymethod(seedefinition3.11andsubclause7.2)oranartificialsoundsource.ThispartofISO11546isapplicablewithoutanyre-strictionstofreestandingenclosureswithvolumeslessthan2m.Iftheactualsoundsourceisused,thesoundinsulationperformanceofenclosureswithvol-umesexceeding2mcanbedeterminedprovidedthattherequirementsconcerningmaximumpermiss-iblevolumeinthestandardusedarefulfilled.Theac-tualsoundsourcemethodisapplicableforanykindofenclosuredesign,forexampleenclosuresfixedtothemachine.Whenthereciprocitymethodortheartificialsoundsourcemethodisused,themaximumvolumeoftheenclosureislimitedto2m.Thesemethodsarenotapplicabletoclose-fittingenclosures.Thewording"laboratoryconditions"usedinthetitleofthispartofISO11546indicatesthattestconditionsandtestenvironment(indoororoutdoor)fullyconformtotherespectiveInternationalStandardsgivenintable1.
【中国标准分类号】:A42
【国际标准分类号】:17_140_01
【页数】:22P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 出口茶叶中硒的荧光光度测定方法 |
| 中标分类： |
食品 >>
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茶叶制品 |
| 替代情况： | 转化为SN/T 0926-2000 |
| 发布日期： | |
| 实施日期： | 1985-09-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
适用范围
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所属分类： 食品 饮料 茶叶制品