BS EN ISO 3747-2000 声学.声压法测定噪声源的声功率级.现场比较法

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【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Comparisonmethodinsitu
【原文标准名称】:声学.声压法测定噪声源的声功率级.现场比较法
【标准号】:BSENISO3747-2000
【标准状态】:作废
【国别】:英国
【发布日期】:2000-09-15
【实施或试行日期】:2000-09-15
【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】:声学测量;现场试验;就地;功率测量;声强;声学试验;声学
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Comparison;Comparisonmethods;Definitions;Determination;Insitu;Inspection;Machinenoise;Machines;Measuringaccuracy;Measuringincertainity;Methods;Noise;Noise(environmental);Noiselevels;Noisemeasurements;Noisesources;Operatingconditions;Precision;Safety;Safetyofmachinery;Sonictesting;Soundlevel;Soundlevels;Soundpressure;Soundsources;Specification(approval);Testing;Use
【摘要】:1ThisInternationalStandardspecifiesamethodfordeterminingthesoundpowerlevelsofsoundsourcesinsitu,especiallyifnon-movable.Acomparisonmethodisusedandallmeasurementsarecarriedoutinoctavebands.Themeasurementuncertaintydependsonthetestenvironment.Themeasurementuncertaintyisevaluatedbycomparingwithanindicatordescribingthespatialsounddistribution.Theaccuracywilleitherbethatofanengineeringmethodorasurveymethod.Thesoundpowerlevelofthesourceundertestiscalculatedfromthemeasuredvaluesofthesoundpressurelevelsproducedatspecifiedmeasurementpointsbythesourceandbyareferencesoundsource,respectively.Thesoundpowerleveliscalculatedusingthecalibratedvaluesofthereferencesoundsourceandthedifferencesbetweenthevaluesobtainedwiththesourceundertestandthoseofthereferencesoundsource.Allcalculationsarecarriedoutinoctavebands,fromwhichtheA-weightedsoundpowerlevelisdetermined.NOTEFornoisesourceswhichcanbemoved,otherrelevantstandardsintheISO3740seriesmaybeused.2ThisInternationalStandardisapplicabletoallkindsoftestenvironmentswhicharetobefoundoutsidealaboratoryenvironment,providedthatthebackgroundnoiselevelissufficientlylowandthesoundpressurelevelatthemicrophonepositionsdependsmainlyonreflectionsfromtheroomsurfaces.NOTEISO3744orISO9614mayprovidealternativemethods.3ThisInternationalStandardisprimarilyapplicabletosourceswhichradiatebroad-bandnoise.Itmay,however,alsobeusedforsourceswhichradiatenarrow-bandnoiseordiscretetones,althoughthemeasurementuncertaintymightthenbecomelargerthanstatedherein.NOTEFornoisesourcesemittingstationarynoise,ISO9614maybeusedasanalternative.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:30P.;A4
【正文语种】:英语