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1、Unit 8 Multimedia,计算机专业英语,郭敏 徐莹 杨阳,Unit 8 Multimedia,Section1 Situational Dialog The Concept of Multimedia Section 2 Passages Passage A. What is Multimedia Passage B. Multimedia Applications for the Classroom Section 3 Skill in Focus Writing Skills, Part 3Feasibility Report Section 4 Extended Readin
2、g Army Experiments with Multimedia-enabled Helmet Technology The Best Shot: Cell or Camera? Edit and Save Photos and Videos with Nero Multimedia Suite 10 Tips: Making Flash Based Floorplan Presentation,Unit 8 Multimedia,Section 1 Situational Dialogue,Unit 8 Section 1,Zhang Hua: Excuse me, Mr. Wang.
3、Would you mind if I ask you a question? Mr. Wang: Of course not. Go ahead. Zhang Hua: Ive heard the word “multimedia” a lot, such as “multimedia computers”, “multimedia classrooms”, “multimedia courseware” and so on. Im quite confused. Is everything connected with computers termed “multimedia”? Mr.
4、Wang: Well, we can see from the name that multimedia refers to multiple types of media being integrated with one another. On the one hand, a medium is a means or instrumentality for storing or communicating information, such as disks, CDs, tapes, semiconductor memory, etc. On the other hand, it is t
5、he carrier of transmitting information, such as texts, sounds, graphics and so on. Generally speaking, the term is used interchangeably with “multimedia technology”.,Unit 8 Section 1,Zhang Hua: What are the characteristics of multimedia technology? Mr. Wang: It should be computer-controlled and inte
6、grated. The information must be represented digitally, and the interface to the user may permit interactivity. Zhang Hua: It seems the technology has found wide application nowadays in various fields. Mr. Wang: Thats true. It has been used in advertisements, art, education, entertainment, engineerin
7、g, medicine, mathematics, business, scientific research and spatial temporal applications.,Unit 8 Section 1,Zhang Hua: Then are there any special requirements for a computer in multimedia applications? Mr. Wang: Actually most PCs today have good multimedia features. They have dual- or single-core CP
8、Us clocked at 3.0 GHz or faster, at least 1GB of RAM, and a 128 MB or higher video card. Popular graphics cards include Nvidia Gforce or ATI Radeon. Zhang Hua: So there is a wide selection for us now. Mr. Wang: Right. Multimedia applications were uncommon due to the expensive hardware required until
9、 the mid-1990s. However, with increases in performance and decreases in price, now they are commonplace. Of course, we can make different choices depending on our specific purposes. Zhang Hua: I see. Thank you very much for your explanation, Mr. Wang. Mr. Wang: Youre welcome.,Unit 8 Multimedia,Secti
10、on 2 Passage A：What Is Multimedia？,Unit 8 Section 2 Passage A,animation Interactive Multimedia ASCII BMP VGA analog format frame Microphone digitized speaker background sound,Unit 8 Section 2 Passage A,Generally speaking, multimedia is the field concerned with the computer controlled integration of
11、text, graphics, drawings, still and moving images (video), animation, audio, and any other media where every type of information can be represented, stored, transmitted and processed digitally. Multimedia products can be an academic presentation, game or corporate presentation, information kiosk, fa
12、shion-designing etc. Multimedia systems are those computer platforms and software tools that support the interactive uses of text, graphics, animation, audio, or motion video. If the sequence and timing of these media elements can be controlled by the user, then one can name it as Interactive Multim
13、edia.,Unit 8 Section 2 Passage A,Elements of multimedia:,Unit 8 Section 2 Passage A,1. Text Text can be a word, a single line, or a paragraph of different type, size, color and style to suit the professional requirement of the multimedia software. The textual data for multimedia can be developed usi
14、ng any text editor. However to give special effects, one needs graphics software which supports this kind of job.,Unit 8 Section 2 Passage A,2. Graphics Another element in multimedia is graphics, with which a subject is more explained rather than as a large chunk of text. Unlike text, which uses a u
15、niversal ASCII format, graphics does not have a single agreed format. They have different format to suit different requirement. Most commonly used format for graphics is .BMP or bitmap pictures. The size of a graphics depends on the resolution it is using. Resolution of an image or graphics is basic
16、ally the pixel density and number of colors it uses. A standard VGA (Video Graphics Array) screen can display a screen resolution of 640480 = 307200 pixel. And a Super VGA screen can display up to 1024768 = 786432 pixel on the screen. While developing multimedia graphics one should always keep in mind the image resolution and number of colors to be used, as this has a direct relation with the image size. If the image size is bigger, it takes more time to load and also requires higher me
