英语翻译Video conferencingVideo conferencing has all the advanta

英语翻译
Video conferencing
Video conferencing has all the advantages of audio conferencing,with one important addition — the participants can see each other.Another feature which may make it attractive to the business user is that it can provide a medium of exchange for digital files in various formats,be they audio,visual,or video,even allowing participants to work simultaneously on the same file.There are a number of options open to organisations who wish to adopt video conferencing,which vary in the quality and outlay required.
At the top end of the market is the video conferencing suite — a dedicated resource set aside specifically for meetings via video.Although meetings held in such an environment may be difficult to manage,and lack spontaneity,the audio isual quality tends to be higher than other configurations.
A ‘roll-about’ system is a video conferencing system housed within a portable cabinet,which can be moved to the desired location as required.Whilst they lack the sophistication of a dedicated resource,the specification can be quite high,and such a system would normally have more than one monitor,at least one camera,and audio equipment designed to deal with poor acoustics and background noise.
The cheapest alternative is the desk-top camera,where individuals meet via a video link on their own computer.However,transmission times (the delay between sending and receiving the video signal) and sound quality tends to be poor,the software can be difficult to set up,and there may be incompatibility between systems.Colleagues may find activity of this nature intrusive,and in some instances,confidentiality and privacy may be compromised.
Video conferencing may be between two discrete destinations (point-to-point) or ‘multi-point’,involving several destinations.The latter may take a number of forms,such as ‘voice switched’ in which the image from the speaker’s site is transmitted to all other monitors,the picture changing with each speaker; ‘chairman controlled’,in which the site which has assumed the chair is seen by all other sites,with the different speakers being seen only by the chair; and ‘continual presence’,in which all participants are represented on all screens via a thumbnail image,with the broadcast sound being that of the person speaking.
No matter which type of technology is being used,you are making an assumption about the level of technological expertise of the user at the other end.Even the technology itself has limitations,and the planning process for deciding on the most appropriate type of technology must take into account the inevitability of down time.Its ease of use may encourage workers to ‘meet’ when a meeting is not the most appropriate use of time.However,audio and video conferencing does offer a flexible,efficient and dynamic approach to meetings whilst retaining some of the advantages of face-to-face communications.

视频会议
视频会议具有电话会议所有的优点,它增加了重要的一项功能就是--参与者可以相互看到对方.再个特点就是它更加吸引了商业用户,也为各种格式的电子文件的交换提供了一个媒介.参与者可以在声音,视觉,或是视频上同时据同样一份文件进行工作.现在有很多的选项供想用视频工作的用户使用,视频质量随付出费用的变化而变化.
市场的尖端就是视频会议,一个致力于通过视频开会的特别装置.尽管会议的环境难于管理,而且缺少自发性,但是视频的质量发展趋势还是要比其它的设备都要高.
“滚动”系统是安装在一个手提式的盒子里的电话会议系统,其可以被移动至需要的位置.同时它们缺少一个联合专注的资源,它的规格可以更高,这样一个系统只要一个以上的监视器,至少一个相机,并且音频设备的设计可以处理声音和背景杂音.
最便宜的是一种桌面相机,人们视频可以通过它连接到电脑上.然而,传输时间（信号在发送与接收间延迟）并且声音质量很差,这种软件很难处理,也可能是系统之间不匹配.同事们也可能会发现一些自然性的东西介入,在某些情况下,私人机密性的东西可能会受到威胁/
电话会议可能是在两个不同的地点（点对点）或者“多点”,包括很多地点.后者可能会有不少的形式,比如说：“声音开关”说话者的地址传输到其它的监视器,讲话者的图像会发生变化.“主席控制”,假设他的位置可以被所有的位置看到,那么讲话都只能被主席看到.“连续存在”可以使所有讲话人呈现出极小的图像显示在荧屏上.声音也像他们所说的那样.
不管使用何种科技方法,你都会猜测对方使用何种技术.甚至科技本身也存在局限性,大多这种类型的科技必须考虑到发生故障的必然性.它的休闲的操作可能鼓励大家去在一个不适合开会的时间会面.然而,音频和视频会议不提供一个弹性的,有效的的教学法来开会,同时它也会得到面对面交流的优势.
以上均属个人翻译供您参考.