【英文标准名称】:Audioandaudiovisualequipment-Digitalaudioparts-Basicmeasurementmethodsofaudiocharacteristics-Part1:General
【原文标准名称】:音频和视听设备.数字音频部分.音频特性的基本测量方法.总则
【标准号】:BSEN61606-1-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2005-02-07
【实施或试行日期】:2005-02-07
【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】:声音广播接收机;电视接收机;测量技术;数字信号;数据传送;测量方法;信号传输;特性;数字工程;测试信号;测量条件;音频信号;DAT;复制;视听资料;视频设备;视听设备;电气工程;数字声频的;放声;放大器;测量;信号;试验;记录器;定义;音频设备;数字的;CD播放机
【英文主题词】:Amplifiers;Audioappliances;Audiosignals;Audiovisualequipment;Audiovisualmaterials;CD-player;DAT;Datatransfer;Definition;Definitions;Digital;Digitalaudio;Digitalengineering;Digitalsignals;Electricalengineering;Measurement;Measurementconditions;Measuringtechniques;Methodsformeasuring;Properties;Recorder;Reproductions;Signaltransmission;Signals;Soundreproduction;Sound-broadcastingreceivers;Televisionreceivers;Testsignals;Testing;Videoequipment
【摘要】:ThispartofIEC61606dealswiththebasicmethodsofmeasurementoftheaudiocharacteristicsofthedigitalaudiopartofaudioandaudiovisualequipmentforbothconsumerandprofessionaluse.Thecommonmeasuringconditionsandmethods,describedinthisstandard,areusedforthemeasurementoftheperformancecharacteristicsofequipmenthavinganaudiobandwidthequaltoapproximatelyone-halfofthesamplingfrequencyofasystem,wheretheaudioinformationisprocessedintheformofdigitaldata.CDplayers,DATrecorders,digitalamplifiers,digitalsoundbroadcastreceiversandtelevisionbroadcastreceiverswithdigitalsoundareexamples.Methodsspecifiedinthisstandardarenotapplicabletosystemsincorporatingbit-ratereduceddigitalaudiosignalsthathavedataloss.Thisstandarddescribestestsforequipmentwhichhasdigitalinputwithanalogueoutputandanalogueinputwithdigitaloutput.Futurerevisionsofthisstandardwillcoverdigital-in/digital-outandanalogue-in/analogue-outtests.Thisstandarddoesnotapplytopoweramplifiers.NOTE1AdigitalaudiosystemhavingananalogueinputandananalogueoutputwithdigitalsignalprocessingmayhavedifferentcharacteristicsfromthoseofapureanalogueaudiosystemduetosamplingoftheaudiosignalandperformanceofincorporatedA/DandD/Aconverters.MeasurementmethodsdescribedinIEC60268-3maynotgivecorrectresultswhenappliedtoadigitalsystem.NOTE2Themethodsdescribedaremostlybasedonsamplingfrequenciesof32kHzandhigher.NOTE3Fortestsofthosesystemsofdigital-in-digital-out,andanalogue-in-analogue-outtest,refertoAES17.NOTE4ThisstandardisplannedtoprovidetheindustrywithaharmonizedsetofmethodsofmeasurementsfordigitalaudiaequipmentasdescribedinthefirsteditionofIEC61606(1997),AES17andEIAJCP-2150.
【中国标准分类号】:M72
【国际标准分类号】:33_160_01
【页数】:34P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 汽车发动机气门挺杆技术条件 |
| 替代情况： | 调整(转号)JB 3681-1984 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1900-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
适用范围
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前言
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目录
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引用标准
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所属分类： 车辆 汽车 汽车综合