【英文标准名称】:Soundsystemequipment-Microphones
【原文标准名称】:音响系统设备.传声器
【标准号】:BSEN60268-4-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-05-12
【实施或试行日期】:2004-05-12
【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】:
【英文主题词】:Acoustoelectricdevices;Amplitude;Classification;Distortionfactors;Dynamics;Electricalengineering;Electricalequipment;Electroacoustics;Environmentalcondition;Frequencycurve;Frequencyresponse;Impedance;Influencequantity;Marking;Measurement;Measuringtechniques;Microphones;Naturalnoisevoltage;Noise;Non-linearity;Operatingconditions;Parameters;Properties;Referenceaxes;Referencecurve;Soundpressure;Soundpressurelevel;Soundtransmission;Symmetry;Testing;Transfercoefficient;Transmissiondevices;Transmissionsystems;Voltagemeasuring
【摘要】:ThispartofIEC60268specifiesmethodsofmeasurementfortheelectricalimpedance,sensitivity,directionalresponsepattern,dynamicrangeandexternalinfluencesofsoundsystemmicrophones,andalsogivesrecommendationsastocharacteristicstobespecified.Itappliestosoundsystemmicrophonesforallapplicationsforspeechandmusic.Itdoesnotapplytomeasurementmicrophones,butitdoesapplytoeachaudiochannelofmicrophoneshavingmorethanonechannel,forexampleforstereoorsimilaruse.Itisalsoapplicabletoflush-mountedmicrophonesandtotheanaloguecharacteristicsofmicrophoneswithdigitalaudiooutput.ForthepurposesofthisInternationalStandard,amicrophoneincludesallsuchdevicesastransformers,pre-amplifiers,orotherelementsthatformanintegralpartofthemicrophone,uptotheoutputterminalsspecifiedbythemanufacturer.NOTEThecharacteristicsspecifiedinthisstandarddonotcompletelydescribethesubjectiveresponseofthemicrophone.Furtherworkisnecessarytofindnewdefinitionsandmeasurementproceduresforalaterreplacementbyobjectivecharacteristicsofatleastsomeofthesubjectivedescriptionsusetodescribemicrophoneperformance.
【中国标准分类号】:M72
【国际标准分类号】:33_160_50
【页数】:50P.;A4
【正文语种】:英语


【英文标准名称】:Piezoelectricfilters-Standardoutlinesandleadconnections
【原文标准名称】:压电滤波器.标准外形和引线连接
【标准号】:BSEN60368-3-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-02-08
【实施或试行日期】:2002-02-08
【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】:电子设备及元器件;尺寸;连接;晶体滤波器;滤波器;机电滤波器;引线;压电器件
【英文主题词】:Components;Crystalfilters;Dimensions;Electricenclosures;Electricalengineering;Electronicengineering;Enclosures;Filters;Outlinedrawings;Overalldimensions;Piezoelectricdevices;Piezoelectricfilters
【摘要】:ThispartofIEC60368specifiestheoutlinedimensionsandleadconnectionsforpiezoelectricfilterswithleadedenclosures.
【中国标准分类号】:L18
【国际标准分类号】:31_140;31_160
【页数】:22P.;A4
【正文语种】:英语