Introduction to Multimedia

Introduction to multimedia

• The word multimedia is made up of two words multi and media.
•  The word multi means 'many' and
• media means 'one way' by which we present ideas or information to each other. 

 Thus multimedia is a collection of two or more media through which we exchange ideas or display information. 

 The TV system is a good example of multimedia because it presents information using audio and video media, 

 similarly student books are also multimedia devices, because they convey information using text or graphics. 

 Multimedia is a combination of computer hardware and software.

"A computer system that has the ability to integrate two or more types of  media, such as text, graphic, sound and video, for the purpose of creating, storing, displaying, converting or accessing multimedia information is called a 'multimedia computer system'. 

COMPONENTS

  There are seven elements - text, graphics, photographs, sound, animation, video and interactivity - that can be included in a multimedia presentation. A TRUE multimedia presentation combines all of these elements.

1)  TEXT - Traditionally text has been used to convey [=vermitteln] messages. Text is an excellent way for delivering information, but can often be too slow at getting the message across. If you only have 3 seconds to grab someone's attention, text is not going to get the job done. 

2) GRAPHICS - Graphics can convey messages instantly. For instance, compare a printed table of sales figures with a graphic of those same figures - you can see the trends immediately in the graphic. A picture can be worth a thousand words if you use it properly to convey your message. 

3) PHOTOGRAPHS - For instance, you can write pages to describe your product, but nothing can describe your product like a full colour photograph. Full-colour photographs can also be used as backgrounds for text and graphics.

4) SOUND - Sound is the best way to attract attention. Both simple sound effects and more complex sounds like voice-overs make a presentation more enjoyable for the viewer. Sound must be recorded and formatted so the computer can understand and use it in presentations.                Two common types of audio format are Waveform (WAV) and Musical Instrument Digital Interface (MIDI). WAV files store actual sounds as music CDs and tapes do. WAV files can be large and may require compression (like mp3). MIDI files are much smaller than WAV files, but the quality of the sound reproduction is not nearly as good.

5) ANIMATION - Animation doesn't necessarily have to involve 3D graphics to be effective in a multimedia presentation. Also simple animations add enjoyment to the presentation and attract more the attention of the viewer, definitely they are more effective than static pictures. Animations are particularly useful to simulate real-world situations, such as the flight of a jet airplane.

6) VIDEO - Video makes use of all of the elements of multimedia - but at high costs. Video files can be quite large, so they are usually reduced in size using compression. Common video compression formats are Audio Video Interleave (AVI), Quicktime, and Motion Picture Experts Group (MPEG or MPEG2).

Multimedia applications

Multimedia is very useful for us, its various forms help in our everyday work and it is very useful in other important work.

1. Business Multimedia (Multimedia In Business )

2. Multimedia in Education

3. Multimedia in Home

4. Multimedia in Public Places

5. Multimedia is publishing industry.

6. Multimedia in Medical and Engineering.

Advantages of multimedia:

1. It can be used to help the student and teacher to teach as well as learn.

2. It can be used to spread knowledge all over the world in a low cost.

3. Multimedia system are generally very interactive. So, it is interesting to use.

Disadvantages of multimedia:

i. It is expensive

ii. It requires well trained manpower.

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Defination of Multimedia

Components of Multimedia 309 kb

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