Introduction to multimedia 2023 | LATEST

 Introduction to multimedia

Introduction to multimedia 2023

• 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'. Is

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.

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.

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.

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.

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.

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.

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), Quick time, and Motion Picture Experts Group (MPEG or MPEG 2).

Need of multimedia

• Through multimedia, we can connect with human users.
• display various types of information in electronic format,
•  We can display more and more information about human users in an interesting way in minimum time.
•  Therefore, for this reason, multimedia is used in various types of training programs, advertising and educational programs.

Uses of multimedia:

Multimedia as we all know is a medium for expressing information with many elements which is now found everywhere in our lives. As we can see in our textbook which includes text as well as graphics (block diagrams, charts). Let's take a look at some other examples listed below.

• Print media and electronic publication
• Entertainment & Games
• Education
• Engineering
• Medical Sciences
• Business Communication and Corporate Training. (Business Communication and Corporate Training)
• Special effects
• Business Marketing
• Virtual Reality
• Video on demand
• Interactive Television
• Information System
• Navigation System
• Electronic Sales
• Preservation of library and national literature. (Libraries and Preservation of National Literature)

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.

• Business Multimedia (Multimedia In Business )

• Multimedia in Education

• Multimedia in Home

• Multimedia in Public Places

• Multimedia is the publishing industry.

• Multimedia in Medical and Engineering.

Advantages of multimedia

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

• It can be used to spread knowledge all over the world at a low cost.

• Multimedia systems are generally very interactive. So, it is interesting to use.

Disadvantages of multimedia:

• It is expensive

• It requires well trained manpower.

 Virtual reality

The term virtual reality refers to a computer-generated, three-dimensional environment. In order to experience and interact with virtual reality, you’ll need the proper equipment, like a pair of VAR glasses or a headset.

In today's time, multimedia has a great influence as a virtual reality. Virtual reality makes us realize events in a fictional way in such a way that as these events are happening in front of us in reality. With the advent of virtual reality, the 3D environment has been used more and more in the fields of games, research, medicines etc. Virtual reality has left a lot of impact.

Types of virtual reality

There are three main types of virtual reality used today to transform the world around us, including non-immersive, semi-immersive, and fully-immersive simulations. 

To get a better understanding of how the technology is used, let’s break down the different types of VAR and see examples of each.

Fully-immersive simulations

Chances are when you think of VAR, you’re picturing a fully-immersive experience – complete with head-mounted displays, headphones, gloves, and maybe a treadmill or some kind of suspension apparatus. 

This type of VAR is commonly used for gaming and other entertainment purposes in VAR arcades or even in your home (empty, non-fragile room advised.) 

Fully-immersive simulations give users the most realistic experience possible, complete with sight and sound. The VAR headsets provide high-resolution content with a wide field of view. Whether you’re flying or fighting the bad guys, you’ll feel like you’re really there.

Semi-immersive simulations

Semi-immersive experiences provide users with a partially virtual environment to interact with. This type of VAR is mainly used for educational and training purposes and the experience is made possible with graphical computing and large projector systems.

In this example, the instruments in front of the pilot are real and the windows are screens displaying virtual content. 

It’s important to keep in mind that semi-immersive VAR simulations still give users the perception of being in a different reality. This type of virtual reality is not always possible to experience wherever. Instead, physical environments are created to supplement virtual reality. 

TIP: Some semi-immersive reality experiences are actually considered mixed reality, where digital objects interact with physical objects.

Non-immersive simulations

Non-immersive simulations are often forgotten as an actual type of VAR, honestly because it’s very common in our everyday lives.

The average video game is technically considered a non-immersive virtual reality experience. Think about it, you’re sitting in a physical space, interacting with a virtual one. 

These types of experiences have become  more advanced in recent years with video games like Wii Sports, where the system actually detects your motion and translates it on screen.