热门站点| 世界资料网 | 专利资料网 | 世界资料网论坛
收藏本站| 设为首页| 首页

BS EN 50332-1-2000 音响系统设备.与便携声学设备相连的耳机和头戴送受话器.最大声压水平测量方法学和限制.成套设备通用方法

作者:标准资料网 时间:2024-05-19 15:39:30  浏览:8730   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:Soundsystemequipment-Headphonesandearphonesassociatedwithportableaudioequipment-Maximumsoundpressurelevelmeasurementmethodologyandlimitconsiderations-Generalmethodfor"onepackageequipment"
【原文标准名称】:音响系统设备.与便携声学设备相连的耳机和头戴送受话器.最大声压水平测量方法学和限制.成套设备通用方法
【标准号】:BSEN50332-1-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-11-15
【实施或试行日期】:2000-11-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:声强;声学测量;声学设备;头戴送受话器;便携的;音频系统;耳机;安全措施;音频设备;声学
【英文主题词】:Acousticequipment;Acoustics;Acoustoelectricdevices;Audioappliances;Definition;Definitions;Earphones;Electricappliances;Electricalengineering;Electroacoustics;Entertainmentelectronics;Headphones;High-fidelity;Instruments;Measuredvalue;Measurement;Measurementset-up;Measuringfrequencies;Measuringtechniques;Performance;Portable;Soundintensity;Soundpressurelevel;Testing;Transmissiondevices
【摘要】:Thescopeofthisstandardistosetupasuitablemeasuringmethodologyallowingaccuratemeasurementofthemaximumsoundpressurelevelproducedbyconsumer'sheadphonesandearphoneswhenassociatedwithportableaudioequipment.NOTEThisstandarddoesnotapplytoacousticallyopenoracousticallyclosedheadphonesassociatedwithmainsoperatedHi-Fihomeequipementnordoesitapplytoheadphonesformedicalpurposes(hardofhearing,etc.)ortoheadphonesorsimilarpartsbeingpartofactivehearingprotectionsystems.Wirelessheadphonesareneitherincluded,conditionsforthemmaybederivedaccordingly.Otherrequirementsforsafety,e.g.fornoiseprotectioninofficesandindustryarenotaffectedbythisstandard.Requestedfeatures:-Themethodshouldbereproducibleandeasilyapplicabletoeverytypeandshapeofheadphoneorearphoneavailableonthemarket(goodmechanicaladaptability).-Assafetyandhealthareaddressed,themethodshouldfaithfullyreflectthepressureleveleffectiveattheuser'shearing(goodcorrelationwithsubjectivetests).-Andfinally,itisdesirabletoestablishaglobalmeasuringprocedure,includingeachcomponentinthechain:Portableset+specifictestsignal+associatedheadphoneorearphone.Thestandardissplitintotwoparts:-Part1dealswithsetsprovidedasapackageequipmentbythemanufacturer.Inthiscase,"Portableaudioequipment"meanstheassociationofoneset(compactcassetteplayer,CDplayer,FMradioreceiver,withitsheadphoneorearphone.-Part2(underconsiderationatpresenttime)givesguidelinestoassociateportableaudiosets(compactcassetteplayer,CDplayer,FMradioreceiver,...)withheadphonesorearphonescomingfromadifferentmanufacturer.
【中国标准分类号】:L31
【国际标准分类号】:17_140_50;33_160_50
【页数】:12P.;A4
【正文语种】:英语


下载地址: 点击此处下载
Product Code:SAE AMS3222
Title:Synthetic Rubber, Hot Oil Resistant, High Swell 45 - 55
Issuing Committee:Ams Ce Elastomers Committee
Scope:This specification covers a synthetic rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.【英文标准名称】:Fibreopticactivecomponentsanddevices.Packageandinterfacestandards.Part3:SFF20-pintransceivers
【原文标准名称】:光纤有源元件及器件.包装和接口标准.第3部分:SFFMT-RJ20针收发器
【标准号】:IEC62148-3-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-11
【实施或试行日期】:2010-11
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC86C
【标准类型】:()
【标准水平】:()
【中文主题词】:连接;定义(术语);电气工程;电子设备及元件;外壳;电气连接件用接口;机械接口;光波导;光电子器件;光电子学;插脚配置;接收机;半导体器件;终端区域;无线电收发信机;发射机
【英文主题词】:Connections;Definitions;Electricalengineering;Electronicequipmentandcomponents;Enclosures;Interfacesofelectricalconnections;Mechanicalinterfaces;Opticalwaveguides;Optoelectronicdevices;Optoelectronics;Pinconfiguration;Receivers;Semiconductordevices;Terminalareas;Transceivers;Transmitters
【摘要】:ThispartofIEC62148coversthephysicalinterfacespecificationsfortheSFFMT-RJ/LC/MUduplex20-pinfibreoptictransceivermodulefamily.Theintentofthisstandardistoadequatelyspecifythephysicalrequirementsofanopticaltransceiverthatwillenablemechanicalinterchangeabilityoftransceiverscomplyingwiththisstandardbothattheprintedcircuitwiringboardandforanypanel-mountingrequirement.
【中国标准分类号】:M33
【国际标准分类号】:33_180_30
【页数】:38P.;A4
【正文语种】:



版权声明:所有资料均为作者提供或网友推荐收集整理而来,仅供爱好者学习和研究使用,版权归原作者所有。
如本站内容有侵犯您的合法权益,请和我们取得联系,我们将立即改正或删除。
京ICP备14017250号-1