IEC/TR3 60268-13-1998 声音系统设备.第13部分:扬声器上的听力试验

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【英文标准名称】:Soundsystemequipment-Part13:Listeningtestsonloudspeakers
【原文标准名称】:声音系统设备.第13部分:扬声器上的听力试验
【标准号】:IEC/TR360268-13-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:电气设备;公共寻址系统;传输装置;电气工程;电声器件;声传输;扬声器;试验;收听试验
【英文主题词】:Acoustoelectricdevices;Electricalengineering;Electricalequipment;Listeningtests;Loudspeakers;Public-addresssystems;Soundtransmission;Testing;Transmissiondevices;Transmissionsystems
【摘要】:Therecommendationsinthisreportapplytoloudspeakersintendedforresidentialsystemsandenvironments.Althoughtheproceduresarespecificallydesignedforloudspeakerswhichareseparatesoundsystemcomponentsforeithermonophonic,two-channelstereophonicormultichannelstereophonicreproduction,theymayalsobeappliedtootherdevicessuchascompleteaudioandtelevisionreceiverswithintegratedsound.Thisreportgivesrecommendationsforestablishing,conductingandevaluatinglisteningtestsonloudspeakers.Althoughvariousaspectsareundercontinuingdiscussion,thisreportisintendedtogivethegeneralguidelines.Certainaspectsmayvary–inparticular,thelisteningroommayreflectregionalconstructionpractices.Thetestsdescribedinthisreportaretobeperformedinaroomthesizeandacousticalpropertiesofwhicharesimilartothoseofan"average"livingroom.Specificrecommendationsabouttheroomsize,acousticalproperties,arrangementsofloudspeakersandlisteners,andenvironmentalconditionsaregiven.ThisTechnicalReportdescribesexperimentalprocedures,includingrecommendationsonthechoiceofprogrammematerialandtheprocessingandpresentationofthefinaldata.Itmaybeuseful,whenapplyingthemethodsofthispublication,toalsoconsidersomeoftherecommendationsinAES20,especiallyasconcernstherangeofperceptualattributesaslistedin5.2.2.Itshouldbeunderstoodthatthetopicsofexperimentaldesign,experimentalexecution,andstatisticalanalysisarecomplex,andthatonlythemostgeneralguidelinescanbegiven.Itisrecommendedthatprofessionalswithexpertiseinexperimentaldesignandstatisticsshouldbeconsultedorbroughtinearlyintheplanningofthelisteningtest.Theuseofmulti-channelformats,principallyfordomesticpresentationofcinema,isbecomingmorewidespread.Theproceduresdescribedinthisreportareapplicabletoanynumberofchannelsofreproduction.Becauseoftherapiditywithwhichthepracticesinthisareaareevolving,onlythemostgeneralguidelinesaregiven.
【中国标准分类号】:L31
【国际标准分类号】:33_160_50
【页数】:41P.;A4
【正文语种】:英语


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【英文标准名称】:Glossaryoftermsusedinlasersafety
【原文标准名称】:激光安全的术语汇编
【标准号】:JISC6801-1988
【标准状态】:作废
【国别】:日本
【发布日期】:1988-11-01
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonElectronics
【标准类型】:()
【标准水平】:()
【中文主题词】:安全措施;激光器;术语;词汇;产品
【英文主题词】:lasers;products;safetymeasures;terminology;vocabulary
【摘要】:この規格は,レーザ製品及びその使用上の安全に関する主な用語について規定する。
【中国标准分类号】:L50;L09
【国际标准分类号】:01_040_31;31_260
【页数】:12P;A4
【正文语种】:日语


Product Code:SAE AMS4989
Title:Titanium Alloy Sheet, Strip, and Plate 3al 2.5v Solution Heat Treated
Issuing Committee:Ams G Titanium And Refractory Metals Committee
Scope:This specification covers a titanium alloy in the form of sheet, strip, and plate.