Multimedia refers to any application that combined several elements of multimedia such as text, graphics, animation, audio and video. A combination of text, audio, animation, video, images/graphics, and interactivity define multimedia. Each appeals to a human sense. The degree and manner to which each is used has the potential to increase learning.
The mix of video, audio, and high quality graphics afforded by multimedia may grab the attention of students, particularly poor readers, in ways that traditional approaches to instruction would not (Kenworthy, 1993). In multimedia environments, learners construct meaningful knowledge by "selecting words and selecting images from the presented material, organizing words and organizing images into coherent mental representations, and integrating the resulting verbal and visual representations with one another" (Mayer, 1997, p. 4).
Sound
The sound is used to provide emphasis or highlight the transition from one page to another. Sound synchronization screen, so that teachers can submit a lot of information. Creative use of sounds to become imaginative stimulus; improper use, it has become an obstacle or an annoyance. The distance between the two properties amount - the acoustic frequency in each peak height of these wave patterns - (sometimes referred to as pitch) peaks. The greater the distance, low voice. Representatives, through video visualization capabilities can be direct and powerful. While this is no doubt, it is how we see and the ability to interact with digital video content to the use of digital video education to provide a new and exciting possibilities. The video can stimulate interest and if it is relevant information on the other pages, and not too far. Video of one of the most compelling reasons, may be its dramatic ability to induce emotional responses from individuals.
Animation
The animation is used to display status changes over time, slowly, to provide students with information to make them in smaller blocks, it is absorbed. Animation, when a user enters a combination, so that students can view the different versions over time change, according to different variables. Animation is used to prove an idea or to explain a concept. Video is usually yes taken from the life, while the animation is based on the drawings on the. 2-D animation there are two types of animation cell animation - based on 3-D animation of moving objects on the screen along a predetermined path - on the changes, one to the next path animation: 3D animation- the structure of a wide range of contour and 3D objects and scenes animation - defines the motion of the object rendering - to an object, such as color, surface texture properties involves three steps modeling of three-dimensional animation, and transparency3-ð animation amount: 3D animation image: from the multimedia concept scanning - the James Schuman3 3D animation special effects: - the two images together a series of image warping - 3D animation effects deformation distort a single image of the virtual reality - Create a user the surrounding environment, therefore, he or she becomes part of the experience.
Graphic
Graphics to provide a learning session, the most creative possibility. They can from the photographs, drawings, charts, spreadsheet, photo from the CD-ROM, or from the Internet to pull something. Scanners, hand-painted work can be included. Standing commented that the "picture recognition memory is almost unlimited. The reason for this is that the images use a lot of range of cortical skills: colour, shape, line, size, texture, visual rhythm, especially the imagination.
The advantages and disadvantages
There are a couple of advantages and disadvantages to using multimedia in communication. I’m only going to a list a few important ones below. If you are interested to know more, visit one of the given websites by just following the links.

Advantages
This is a very user-friendly. It does not need the number of energy users, in this sense, you can sit down to watch the demo, and you can read the text and hear the sound.
It is a multi-sensory. It uses the senses of many users, while the use of multimedia, such as hearings, see and talk.
It is a comprehensive and interactive. Through different media in the process of digital integration. The possibility of interaction easy feedback are greatly increased.
It is flexible. Digitalization, this media can easily be changed to adapt to different situations and audiences.
It can be used for a variety of audiences, ranging from one person to the whole group.
Creative Industries: the creative industries, including advertising, media and news, they use multimedia fun and interactive way to express their thoughts. Organization of advertising agencies and other creative work across a creative way of information, ideas and news. Path information in an interactive visualization of these ideas, multimedia plays a vital role.
The latest developments in the enterprise: technology and multimedia environment has made it possible for entrepreneurs to come up with an attractive company website or presentation, including information about their products and services to the interpretation of text, audio and video.
Marketing: construction in the site text, images, video shows the general idea of the product is very popular. To explain the links with the media, social networking sites to promote our ideas is inevitable. Customers can easily visualization and link to website, in a good way to understand the message.
Telecommunications industry: Today, everyone is clear Multimedia Messaging Service (MMS). This service makes it possible to audio and video content from our mobile phones to send text. Previously, it was limited to only a certain number of text messages. In the phone's multimedia applications area in 2012 will only increase with the daily development of the function, such as playing music, games, watching movies, and our mobile news.
It can be seen in the entertainment industry entertainment: multimedia use one. With the latest technology research and invention, the annual multimedia range has been expanded. We like to see a 3D movie in the cinema theaters and on television - and enjoy the movie special effects would not have been no multimedia possible.
Running on a multimedia platform for video games. Multimedia range is the frequent introduction of a wide range of new video game every other day. In short, it can be said that increased consumer support and positive feedback from the range of digital multimedia, and only increase in 2012. Has become more technology-friendly in the world. Network marketing, the popularity of the use of computers, mobile phones and video games is expanding its door in 2012 of multimedia opportunities.
Planning and costing.
Designing and production.
Testing.
Delivering.
A Multimedia application is developed in stages as all other software are being developed. In multimedia application development a few stages have to complete before other stages being, and some stages may be skipped or combined with other stages. Following are the four basic stages of multimedia project development:
Planning and Costing.
This stage of multimedia application is the first stage which begins with an idea or need. This idea can be further refined by outlining its messages and objectives. Before starting to develop the multimedia project, it is necessary to plan what writing skills, graphic art, music, video and other multimedia expertise will be required. It is also necessary to estimate the time needed to prepare all elements of multimedia and prepare a budget accordingly. After preparing a budget, a prototype or proof of concept can be developed.
Designing and Producing.
The next stage is to execute each of the planned tasks and create a finished product.
Testing
Testing a project ensure the product to be free from bugs. Apart from bug elimination another aspect of testing is to ensure that the multimedia Multimedia Systems- M.Sc(IT) application meets the objectives of the project. It is also necessary to test whether the multimedia project works properly on the intended deliver platforms and theymeet the needs of the clients. Delivering. The final stage of the multimedia application development is to pack the project and deliver the completed project to the end user. This stage has several steps such as implementation, maintenance, shipping and marketing the product.
Disadvantages
Information overload. Because it is so easy to use, it can contain too much information only once. Information overload. Because it is so easy to use, it can contain too much information only once.
It takes time to compile. Even if it is flexible, it needs time with the original draft.
It can be expensive. As one of my previous post mentioned, and multimedia using a wide range of resources, you can spend a lot of money.
Too unrealistic. Large files such as video and audio effects, the time it takes to load your presentation. By adding too much may mean that you must use a larger computer storage files. If you want to upload to the Internet, there are several factors, such as bandwidth and the user's ability to keep in mind.
Compatibility
Each browser can display at least some subset of HTML. The broad support of multimedia elements. The best example is the case of Apple's mobile devices, Flash multimedia. As of mid-2012, the device still does not support Flash, resulting in the dependence of Flash iPad and iPhone, the website displays an error. This problem applies to other types of multimedia, as well. Use the Windows Media format, multimedia content website will often fail to work properly correct the user's computer, the lack of the Windows Media plug-in.
It takes time to compile. Even if it is flexible, it needs time with the original draft.
It can be expensive. As one of my previous post mentioned, and multimedia using a wide range of resources, you can spend a lot of money.
Too unrealistic. Large files such as video and audio effects, the time it takes to load your presentation. By adding too much may mean that you must use a larger computer storage files. If you want to upload to the Internet, there are several factors, such as bandwidth and the user's ability to keep in mind.
Compatibility
Each browser can display at least some subset of HTML. The broad support of multimedia elements. The best example is the case of Apple's mobile devices, Flash multimedia. As of mid-2012, the device still does not support Flash, resulting in the dependence of Flash iPad and iPhone, the website displays an error. This problem applies to other types of multimedia, as well. Use the Windows Media format, multimedia content website will often fail to work properly correct the user's computer, the lack of the Windows Media plug-in.

Conclusion.
The stages of a Project: Most of the multimedia and web projects are undertaken in stages. Some stages are necessary to complete before other stages begin, also some stages may be skipped or combined. There are generally four basic stages in multimedia project.
Planning and Costing: A project always begins with an idea or a need that you purify by outlining its messages and objectives. Identify how you will make each message and objective work within your authoring system. Before developing any multimedia project we plan what writing skills, graphic art, music, video, audio and other multimedia expertise will be required. Develop a creative graphic look and feel, as well as structure and navigation system that will let the viewer visit the messages and content. Estimate the time needed to do all elements, and prepare a budget. Designing and Producing: Perform each of the planned tasks to create a finished product.