【英文标准名称】:Acoustics-Measurementofsoundinsulationinbuildingsandofbuildingelementsusingsoundintensity-Part3:Laboratorymeasurementsatlowfrequencies
【原文标准名称】:声学.用声强进行建筑物和建筑构件的隔声测量.第3部分:低频率实验室测量
【标准号】:ISO15186-3-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-11
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:结构构件;隔音;条件;声强;声学试验;元部件;低频;建筑;声学;定义;实验室试验;建筑物;试验;测量
【英文主题词】:Acoustictesting;Acoustics;Buildings;Components;Conditions;Construction;Definitions;Laboratorytesting;Lowfrequencies;Measurement;Measuringtechniques;Soundinsulation;Soundintensity;Structuralmembers
【摘要】:1GeneralThispartofISO15186specifiesasoundintensitymethodtodeterminethesoundreductionindexandtheelement-normalizedleveldifferenceofbuildingelementsatlowfrequencies.ThismethodhassignificantlybetterreproducibilityinatypicaltestfacilitythanthoseofISO140-3,ISO140-10andISO15186-1.Theresultsaremoreindependentoftheroomdimensionsofthelaboratoryandclosertovaluesthatwouldbemeasuredbetweenroomsofvolumegreaterthan300m.ThispartofISO15186isapplicableinthefrequencyrange50Hzto160Hzbutismainlyintendedforthefrequencyrange50Hzto80Hz.NOTEForelementsfacedwiththick,porousabsorbers,therecommendedfrequencyrangeis50Hzto80Hz.ThemaindifferencesbetweenthemethodsofISO15186-1andISO15186-3arethatinISO15186-3a)thesoundpressurelevelofthesourceroomismeasuredclosetothesurfaceofthetestspecimen,andb)thesurfaceoppositethetestspecimeninthereceivingroomishighlyabsorbingandconvertstheroomacousticallyintoaductwithseveralpropagatingcross-modesabovethelowestcut-onfrequency.TheresultsfoundbythemethodofISO15186-3canbecombinedwiththoseofISO140-3andISO15186-1toproducedatainthefrequencyrange50Hzto5000Hz.2PrecisionThereproducibilityofthisintensitymethodis,forallfrequencies,estimatedtobeequaltoorbetterthanthatfoundwiththemethodofISO140-3at100Hz.SomecomparisonsofdataobtainedwiththemethodsofthispartofISO15186andISO140-3aregiveninannexB.
【中国标准分类号】:Z32
【国际标准分类号】:91_120_20
【页数】:14P.;A4
【正文语种】:英语