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1、Internet and Multimedia,因特网和多媒体,1,New Words,2,New Words,Multimedia,Once upon a time,the words Internet and multimedia were rarely mentioned in the same sentence.Although you could download GIF images or sound files from an FTP site and then view or listen to them on your PC,the Internet experience i
2、tself was far from a multimedia extravaganza.,Multimedia,Once upon a time,the words Internet and multimedia were rarely mentioned in the same sentence.Although you could download GIF images or sound files from an FTP site and then view or listen to them on your PC,the Internet experience itself was
3、far from a multimedia extravaganza.,从前，“英特网”和“多媒体”两个单词很少出现在一句话中。虽然可以从FTP站点上下载GIF图片或声音文件在PC上观看或收听，但是这样的英特网体验离多媒体异乎寻常的娱乐表现还很远。,Multimedia,Indeed,until the advent of the phenomenal popularity of the World Wide Web,accessing the Internet was like reading the from of the Wall Street Journal:lots of good
4、information,but gray,without pictures,and dull on the eyes.,Multimedia,Indeed,until the advent of the phenomenal popularity of the World Wide Web,accessing the Internet was like reading the from of the Wall Street Journal:lots of good information,but gray,without pictures,and dull on the eyes.,在万维网惊
5、人的流行出现之前，访问英特网就好像是在阅读华尔街日报的头版一样：虽然可以获得很多有用的信息，但是形式很苍白，没有图片，单调得无法吸引人的眼球。,Multimedia,In 1993,a computer program called Mosaic changed all that.Mosaic is a browser a program that allows users to use the Internets World Wide Web.For the first time,true multimedia the mixing of various media such as text
6、,images,sounds,and movies came to the Internet.,Multimedia,In 1993,a computer program called Mosaic changed all that.Mosaic is a browser a program that allows users to use the Internets World Wide Web.For the first time,true multimedia the mixing of various media such as text,images,sounds,and movie
7、s came to the Internet.,1993年，一个叫Mosaic的计算机程序改变了这一切。Mosaic是一个浏览器允许用户使用英特网的程序。真正的多媒体（包括文字、图片、声音和电影的各种媒体的混合）第一次进入英特网。,Multimedia,Today,not only can you download those sorts of files,but you can also experience them while you are online.You can also present your information,complete with mixed media,on
8、 your own Web page.,Multimedia,Today,not only can you download those sorts of files,but you can also experience them while you are online.You can also present your information,complete with mixed media,on your own Web page.,今天你不但可以下载那些类型的文件，还可以在线体验。你也可以在自己的网页上发布你的信息，包括混合的媒体。,Multimedia,The World Wid
9、e Web continues to grow in popularity,but most of us have limited bandwidth resources while in the world of full multimedia were going to need much faster access.At speeds like 28.8 kbps,video or audio files more than a few minutes long can take a long time to transfer to a PC,so if youre waiting to
10、 see Gone with the Wind or hear Wagners entire Ring Cycle,forget it,Users will get tired of waiting for things to download.,Multimedia,The World Wide Web continues to grow in popularity,but most of us have limited bandwidth resources while in the world of full multimedia were going to need much fast
11、er access.At speeds like 28.8 kbps,video or audio files more than a few minutes long can take a long time to transfer to a PC,so if youre waiting to see Gone with the Wind or hear Wagners entire Ring Cycle,forget it,Users will get tired of waiting for things to download.,互联网不断流行，但我们大多数只有有限的带宽资源，而在真正
12、的多媒体世界里我们需要快得多的接入速度。在28.8kbps的速度下，下载一个几分钟的视频或音频文件需要很长的时间。所以如果你等着看乱世佳人或者听Wagner的指环，那还是放弃这个念头吧。用户厌倦长时间地等待文件下载。,Multimedia,As a result of this bottleneck,people can get only text and graphics files from the Web.Text and still image files are generally small,so you dont need to wait too long to view the
13、m,but anyone who has waited for a graphically heavy Web site will soon realize how frustrating this experience can be.,Multimedia,As a result of this bottleneck,people can get only text and graphics files from the Web.Text and still image files are generally small,so you dont need to wait too long t
14、o view them,but anyone who has waited for a graphically heavy Web site will soon realize how frustrating this experience can be.,由于这个瓶颈，人们只能从网站上获取文本和图形文件。文本和静止图像一般都比较小，因此你不需要等待太长时间就能看到它们，但是等待满是图片的网站，你很快就会意识到这种经历是多么令人沮丧。,Multimedia,Although audio and animation are both possible on the Web,you need a
15、much faster connection to send and receive the huge audio and video files that would enable you to take full advantage of Internet multimedia.,Multimedia,Although audio and animation are both possible on the Web,you need a much faster connection to send and receive the huge audio and video files tha
16、t would enable you to take full advantage of Internet multimedia.,虽然网站上可能有音频和动画，但是需要快得多的连接速度来发送和接受大型的音频和视频文件，让我们能充分利用英特网多媒体。,Multimedia,But back up a second.What do we mean by multimedia?Loosely,multimedia is the blending together of more than one medium such as text,graphics,sound,movies,whatever o
17、n your computer.,Multimedia,But back up a second.What do we mean by multimedia?Loosely,multimedia is the blending together of more than one medium such as text,graphics,sound,movies,whatever on your computer.,请先稍等一下。我们所说的多媒体究竟是什么呢？不严格地说，多媒体就是多种媒体（比如文本、图形、声音、电影或计算机中的任何东西）的调和。,Multimedia,Multimedia ha
18、s been around for years,of course,through movies and television,but the word multimedia refers almost exclusively to computer technology.For example,thousands of CD-ROMs,computer games,and educational programs offer on-screen text combined with video,music,and narration.,Multimedia,Multimedia has be
19、en around for years,of course,through movies and television,but the word multimedia refers almost exclusively to computer technology.For example,thousands of CD-ROMs,computer games,and educational programs offer on-screen text combined with video,music,and narration.,当然，我们通过电影和电视早就和多媒体打交道了，但使用多媒体一词则
20、几乎无例外地是与计算机技术有关的。比如数以千计的CD-ROM、电脑游戏和教育软件都提供了与视频、音乐和解说相结合的在计算机屏幕上看到的文本。,Multimedia,The Internet has been home to multimedia for years and years.But because graphics,animation,and sound files are so large,often several megabytes in size,they take a great deal of time to download.For this reason,their
21、availability was sharply limited for regular users some years ago.,Multimedia,The Internet has been home to multimedia for years and years.But because graphics,animation,and sound files are so large,often several megabytes in size,they take a great deal of time to download.For this reason,their avai
22、lability was sharply limited for regular users some years ago.,多媒体已在英特网上好多年了。但是由于图形，动画和声音文件太大了，往往有几兆，下载这些文件需要耗费大量的时间。因此几年前对于正常的用户来说，多媒体的可利用性被明显地限制了。,Multimedia,To us,true multimedia means,in part,being able to do all those things that you can already do,but without the interminable waiting.Multimedi
23、a is supposed to be an interactive endeavor,but for a slow connection,Internet multimedia isnt truly interactive.True multimedia should deliver information fast enough that you wont have time to go for coffee while a long of video program is transmitted to your computer.,Multimedia,To us,true multim
24、edia means,in part,being able to do all those things that you can already do,but without the interminable waiting.Multimedia is supposed to be an interactive endeavor,but for a slow connection,Internet multimedia isnt truly interactive.True multimedia should deliver information fast enough that you
25、wont have time to go for coffee while a long of video program is transmitted to your computer.,对我们来说，真正的多媒体从某种程度上来说就是能够让我们在没有长时间等待的情况下做到我们已经能够做到的一切。多媒体应该成为一个交互式的尝试，但是在低速连接的情况下，英特网多媒体不是真正的交互。真正的多媒体应该以足够快的速度传递信息，在将视频节目传送到你的计算机时不会有时间让你去喝杯咖啡。,Multimedia,The intertwining of multimedia and the Internet ma
26、kes sense.People like multimedia on their computers.Its engaging,entertaining,and often makes otherwise complex computers a little easier to use.,Multimedia,The intertwining of multimedia and the Internet makes sense.People like multimedia on their computers.Its engaging,entertaining,and often makes
27、 otherwise complex computers a little easier to use.,多媒体和英特网的紧密结合是有意义的。人们喜欢电脑上的多媒体，多媒体是有吸引力的、有趣的，另外经常使复杂的计算机变得容易使用一些。,Multimedia,Certainly it works:Some multimedia educational programs are meant to be enjoyed by children who are barely old enough to walk.The Internet,once an ugly and text-only syste
28、m,certainly needs pictures,sound,and point-and-click simplicity to make it understandable to the masses.,Multimedia,Certainly it works:Some multimedia educational programs are meant to be enjoyed by children who are barely old enough to walk.The Internet,once an ugly and text-only system,certainly n
29、eeds pictures,sound,and point-and-click simplicity to make it understandable to the masses.,确实它起作用了：一些多媒体教学程序有意要让那些还刚会走路的孩子们喜爱。一度难看而且只有文字的互联网当然需要有一些图片和声音，再加上容易点击，使它易于被大众理解接受。,Multimedia,For example,years ago,using the Internet to find the weather forecast meant knowing how to log into a mainframe or
30、 minicomputer,remembering how to telnet to a remote computer,and navigating a series of text-based menus or prompts.,Multimedia,For example,years ago,using the Internet to find the weather forecast meant knowing how to log into a mainframe or minicomputer,remembering how to telnet to a remote comput
31、er,and navigating a series of text-based menus or prompts.,比如，几年前使用英特网查询天气预报意味着你要知道如何登陆大型计算机或小型计算机，如何远程登陆到一台远程计算机，并浏览一系列基于文字的菜单或提示信息。,Multimedia,You could get the forecast pretty quickly once you got good at the process,but the exercise wasnt for the faint of heart or computer shy.Today,all you need
32、 to do to get the weather forecast is to launch a World Wide Web browser and click.,Multimedia,You could get the forecast pretty quickly once you got good at the process,but the exercise wasnt for the faint of heart or computer shy.Today,all you need to do to get the weather forecast is to launch a
33、World Wide Web browser and click.,一旦你掌握好了这个过程，就能很快查询到天气预报，但这种操练可不适合那些缺乏勇气或惧怕计算机的人。而现在为了获得天气预报你需要做的只是运行万维网浏览器然后点击。,Multimedia,Although audio and animation are both possible on the Web,you need a much faster connection to send and receive the huge audio and video files that would enable you to take fu
34、ll advantage of Internet multimedia.,Multimedia,Although audio and animation are both possible on the Web,you need a much faster connection to send and receive the huge audio and video files that would enable you to take full advantage of Internet multimedia.,虽然网站上可能有音频和动画，但是需要快得多的连接速度来发送和接受大型的音频和视频
35、文件，让我们能充分利用英特网多媒体。,Multimedia,You are greeted not with a length description of weather trends but with a pictorial map of the weather situation.This example is only the beginning of how multimedia is changing the Internet.A huge number of consumer products and services are making the Net still easie
36、r for all to enjoy.,Multimedia,You are greeted not with a length description of weather trends but with a pictorial map of the weather situation.This example is only the beginning of how multimedia is changing the Internet.A huge number of consumer products and services are making the Net still easi
37、er for all to enjoy.,迎接你的不是冗长的天气趋势的描述而是天气情况的图解地图。这个例子仅仅是多媒体改变英特网的开始。大量消费产品和服务正在使英特网对于所有喜欢它的人更加容易。,Multimedia,Most people would agree that the advent of multimedia on the Internet is a change for the better,although longtime users may contend that the Internets newfound ease of use is making cyberspa
38、ce a wee bit crowded for their taster.Still,multimedia on the Internet is here to stay.,Multimedia,Most people would agree that the advent of multimedia on the Internet is a change for the better,although longtime users may contend that the Internets newfound ease of use is making cyberspace a wee b
39、it crowded for their taster.Still,multimedia on the Internet is here to stay.,大多数人会同意，互联网上多媒体的出现是好事，尽管（某些）老用户可能会争辩说现在互联网的使用方便使得网上空间对于他们的口味而言变得有点拥挤了。然而，英特网上的多媒体已呈现在我们面前。,Interactivity,The notion of interactivity is important,and it brings up another aspect of multimedia that doesnt get mentioned all
40、that often live multimedia.Even the fastest,prettiest,and most technologically advanced computer games and simulations take place in fabricated time,and their multimedia is packaged and programmed to take place at specific times and intervals.,Interactivity,The notion of interactivity is important,a
41、nd it brings up another aspect of multimedia that doesnt get mentioned all that often live multimedia.Even the fastest,prettiest,and most technologically advanced computer games and simulations take place in fabricated time,and their multimedia is packaged and programmed to take place at specific ti
42、mes and intervals.,交互性的概念非常重要，它提出了多媒体不常被提起的另一方面实时多媒体。即使是最快、最漂亮、技术最先进的电脑游戏及模拟都是在制作时发生的，为了在特定时间和间隔发生，其多媒体被组合包装和编程。,Interactivity,But the real world happens in real time,with interactions occurring constantly and things changing and adapting by the second.What about those transactions?How can they happ
43、en over a series of linked computers?How can they happen globally,over the Internet,which was designed from the beginning as an information-sharing resource,not a live communication technology?Here,the Mbone comes into play.,Interactivity,But the real world happens in real time,with interactions occ
44、urring constantly and things changing and adapting by the second.What about those transactions?How can they happen over a series of linked computers?How can they happen globally,over the Internet,which was designed from the beginning as an information-sharing resource,not a live communication techno
45、logy?Here,the Mbone comes into play.,但真实世界是实时的，交互行为不断地发生，事物变化和适应的速度是以秒计的。那些交互怎么样？它们是如何在一系列连接着的计算机上发生的？互联网一开始是被设计成信息共享资源的，而不是一项实时通信技术，这种实时交互怎样才能通过互联网在全球范围实现呢？这时，Mbone起作用了。,Interactivity,The wonders of Mosaic were first available only to users who had powerful workstations,but the Web was quickly embr
46、aced by the legions of“regular users”using their“regular computers”.Likewise,folks today who have powerful computer workstations and bandwidth to burn are using the hottest multimedia tools programs that allow such marvels as real-time videoconferencing,collaboration using shared virtual“whiteboards
47、”,and media-on-demand servers.,Interactivity,The wonders of Mosaic were first available only to users who had powerful workstations,but the Web was quickly embraced by the legions of“regular users”using their“regular computers”.Likewise,folks today who have powerful computer workstations and bandwid
48、th to burn are using the hottest multimedia tools programs that allow such marvels as real-time videoconferencing,collaboration using shared virtual“whiteboards”,and media-on-demand servers.,最初，Mosaic的神奇只对拥有强大工作站的用户们有用，但是很快互联网被大量用着普通计算机的普通用户接受。同样地，今天那些拥有强大的计算机工作站和足够宽带可消耗的人们正使用着最新最流行的多媒体工具实现这些奇迹，如实时视
49、频会议，共享虚拟“白板”的合作和媒体点播服务的程序。,What is the internet?,The Internet is the worlds largest computer network.Its an international collection of smaller networks,computers,and the people who use them.The commercial on-line services are all part of the Net.Your businesss or schools computer system is on the N
50、et.The person sitting beside you at the doughnut store could well have an Internet account.,What is the internet?,The Internet is the worlds largest computer network.Its an international collection of smaller networks,computers,and the people who use them.The commercial on-line services are all part
