《Multimedia》实验指导书(模板).pdf

《《Multimedia》实验指导书(模板).pdf》由会员分享，可在线阅读，更多相关《《Multimedia》实验指导书(模板).pdf（4页珍藏版）》请在得力文库 - 分享文档赚钱的网站上搜索。

1、实验二 Multimedia 一、实验目的 1、扩大通信技术的英语词汇量。2、熟悉多媒体相关专业术语。3、了解科技文章的表达特点和掌握科技英语的翻译技巧。二、实验内容 文章翻译 Multimedia The word“multimedia”is being used to describe a mixture of hardware,software and applications,with a consequent confusion in peoples minds as to what it is.It is a confusion situation that could lead

2、to a missed opportunity for industry to develop a new marketplace.The term multimedia literally means many forms of communication and in a sense we have always been immersed in a multimedia environment because we are beings that respond to sound,light,touch,and ideas.This is essentially an interacti

3、ve environment.In the modern presentation of multimedia we now have the technology that can begin to move towards an ability,already held by the human being,in that by using computer technology,such as CD-ROM,not only can we bring together audio and visual images but also be interactive with other c

4、omputer users.Perhaps the biggest reason for the explosion of multimedia offerings is the enormous advances in personal desk top computers.This computer advance would appear to bring multimedia facilities within the reach of the majority of homes for about US$1 000;this system might consist of a hig

5、h-speed processor with huge storages of RAM and hard disc,a colour monitor,CD-ROM,sound system,language and learning systems and Windows and Lotus Applications.This sort of specification is aimed at the personal,home computer market and is probably more for games and education.The first element asso

6、ciated with multimedia is perhaps the CD-ROM,now considered a mature technology.The CD-ROM is used to store data that represents visual imagery and current units can store up to 650 Mbytes of data.The standards of multimedia can be found in what is known as the ITU White Boot,which brings together v

7、arious standards for CD-COM and video compression and it is essential that these two areas of standards are taken together.A crucial element in the provision of multimedia is the use of compressed video.Without compression the amount of storage that would have to be provided by the CD-ROM would be i

8、mmense,or you would only be able to store 15 seconds of a full motion picture.If compression is applied to the motion pictures experts group(MPEG-1)standard,then a 650 Mbytes CD-ROM can hold either 72 minutes of video,or 19 hours of audio,or 7 000 still photographs.The standards for moving pictures

9、are by MPEG as international standards.The two levels are MPEG-1,which sets the provision of consumer quality of video and audio and MPEG-2,which sets the higher standards for professional,broadcast images and also looks to define high definition television(HDTV).MPEG-2 looks at more than pictures;i

10、t looks at the associated sound,storage methods,bit rates needed,coding algorithms,etc.Modern encoders are not only used in the CD-ROM area,but also as a means of transmitting signals,they use a number of digital signal processor to form a vision encoder.If we consider the business area of multimedi

11、a applications,the provision of video is crucial and that video information must come to user in real time and therefore be processed in real time.This means that any system must conform to the CCITT MPEG-2 standard.The technology to do this has moved on tremendously in the last few years due to the

12、 need to reduce the cost of transmitting data over the network.The encoders and decoders for video are now manufactured with a minimum of integrated circuits.What then the problems for the designer?The individual elements of multimedia are already handled by a standard personal computer,such things

13、as audio,graphics and text,but the major challenge is in real time video,for this is the major business requirement and a necessity if multimedia systems are to become standard items for the desktop.This real time processing requires a vast amount of data storage and this is a function of the amount

14、 of information contained in a colour picture,for instance a normal 640480 pixel colour picture requires well over 1 Mbytes of storage to give the required quality,though for full motion video this is increased up to 100 Mbytes of data.The spread of multimedia users is not just a function of technol

15、ogy,and it is certainly not a stoppable process.The key to its take-up is in the successful selling of video and television services,which are often gathered under the general title of video-on-demand(VOD)interactive services.A typical VOD architecture takes trunk and access networks into account.Th

16、e video server is the key to on-demand services.The video server will store a large number of programs that can be instantly accessed by a large number of individual subscribers;it is stored in a compressed form to save space.The use of multimedia is increasing all the time and it is estimated that

17、in the period from 1991 to 1998 the volume of multimedia,not only for personal but also business use,will increase from zero to$1.9 billion for the software element alone.Multimedia is no longer a toy or a game technology.It is moving into our lives in many ways.It is affecting our banking,shopping,

18、education,and travel and work patterns.Yet,it is an increasing element in our lives.三、实验步骤及要求 1、首先，打开手机，在应用市场上搜索可以翻译文档的软件，然后将翻译软件先下载到手机上，然后打开软件。软件分为三个功能：文档翻译、图片翻译、短句翻译。2、将翻译软件中的翻译参数设置为英译汉，将需要翻译成的语言调整为简体中文。3、利用翻译软件功能，采用一句原文，一句中文的方式进行翻译。4、将翻译后的汉语内容进行适当的句式调整,做到准确、完整、通顺和专业。四、实验设备 一部可以装有翻译软件的智能手机。五、实验预习要求 阅读实验指导书内容，做好课前预习工作。六、实验报告要求 要求对文章进行翻译，书写的翻译内容要通顺、专业。