Md Rashedul Hasan What Is Multimedia n In

Md. Rashedul Hasan

What Is Multimedia n In everyday life, multimedia is everything you hear or see, e. g. text in books, sound in music, and graphics in pictures. n In computing multimedia is the presentation of information by a computer system using text, sound and graphics.

What Is Multimedia n Multimedia is the field concerned with the computer -controlled integration of 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. n Multimedia is simply multiple forms of media integrated together. Media can be text, graphics, audio, animation, video, data, etc. An example of multimedia is a Mozart web page that has text regarding the composer, an audio file of some of his music, and even a video of his music being played in a hall.

What is Multimedia Application It is an application which uses a collection of multiple media sources e. g. text, graphics, images, sound/audio, animation and/or video. Multimedia applications were, until the mid 90 s, uncommon due to the expensive hardware required. With increases in performance and decreases in price, however, multimedia is now commonplace. Nearly all PCs are capable of displaying video, though the resolution available depends on the power of the computer's video adapter and CPU.

Who uses multimedia? n Education In education, multimedia can be used as a source of information. Students can search encyclopedias such as Encarta, which provide facts on a variety of different topics using multimedia presentations. Teachers can use multimedia presentations to make lessons more interesting by using animations to highlight or demonstrate key points. A multimedia presentation can also make it easier for pupils o read text rather than trying to read a teacher’s writing on the board. Programs which show pictures and text whilst children are reading story can help them learn to read; these too are a form of multimedia presentation.

Who uses multimedia? n Business Multimedia is used for advertising and selling products on the Internet. Some businesses use multimedia for training where CD-ROMs or online tutorials allow staff to learn at their own speed, and at a suitable time to the staff and the company. Another benefit is that this form of training saves the company money, as they do not have to pay the additional expenses of an employee attending a course away from the workplace.

Who uses multimedia? n Leisure People use the Internet for a wide range of reasons, including shopping and finding out about their hobbies. The Internet has many multimedia elements embedded in web pages and web browsers support a variety of multimedia formats. Many computer games use sound tracks, 3 D graphics and video clips.

The basic elements of multimedia on a computer are n Text n Still images n Sound n Movies n Animations n Special Effects

Applications n World Wide Web n Video conferencing n Video-on-demand n Interactive TV n Groupware n Home shopping n Games n Virtual reality n Digital video editing and production systems n Multimedia Database systems

Multimedia and the Future As technology progresses, so will multimedia. Today, there are plenty of new media technologies being used to create the complete multimedia experience. For instance, Today’s video games include bio feedback. In this instance, a shock or vibration is given to the game player when he or she crashes or gets killed in the game. In addition, as computers increase their power, new ways of integrating media will make the multimedia experience extremely intricate and exciting.

Multimedia Computers: What to Look For n n n n Processor The processor should run at a minimum of 3. 0 GHz, with a front bus speed of 800 MHz. Those that offer dual or quad-core processors are better at running multiple applications and thus, rated better. Memory Multimedia requires a large amount of memory. The best computers offer at least a 500 GB hard drive and 2 GB of RAM. Graphics Card An exceptional graphics card is required for playing and recording DVDs, TV, digital video and games successfully. The best multimedia PCs come with at least a 256 MB card. Multimedia Features Systems configured for multimedia should include a DVD burner/reader, surround sound, and inputs for connecting video, peripherals and other media devices. Accessories include keyboard, mouse, software, monitor or other devices. Software can be costly, so it is nice if the system comes ready to run with an operating system and the ability to burn DVDs and edit videos, photos or audio. Value/Price Cost effective computers offer above average features at a below average price. Customer Service Setting up a system can get complicated, so it is useful if the manufacturer offers helpful customer service by telephone, email and chat. Some companies may publish a comprehensive online FAQs or tutorial, as well as offer driver and software downloads.

Components of a Multimedia System n Capture devices -- Video Camera, Video Recorder, Audio Microphone, Keyboards, mice, graphics tablets, 3 D input devices, tactile sensors, VR devices. Digitising/Sampling Hardware n Storage Devices -- Hard disks, CD-ROMs, Jaz/Zip drives, DVD, etc n Communication Networks -- Ethernet, Token Ring, FDDI, ATM, Intranets, Internets.

Components of a Multimedia System n Computer Systems -- Multimedia Desktop machines, Workstations, MPEG/VIDEO/DSP Hardware n Display Devices -- CD-quality speakers, HDTV, SVGA, Hi-Res monitors, Colour printers etc.

Multimedia software Presentation packages are application packages that allow you to create multimedia presentations. This is done by creating slides or pages, which can include text, sound and graphics. The most common presentation package is Microsoft Power. Point.

Multimedia software Multimedia authoring packages are similar to presentation packages but have more sophisticated facilities for creating your multimedia presentation. To create standalone multimedia applications such as Microsoft Encarta, professionals use multimedia authoring packages such as Hyperstudio and Macromedia Director.

Multimedia Authoring Tools A multimedia authoring tool is a program that helps you write multimedia applications. A multimedia authoring tool enables you to create a final application merely by linking together objects, such as a paragraph of text, an illustration, or a song. They are used exclusively for applications that present a mixture of textual, graphical, and audio data. With multimedia authoring software you can make video productions including CDs and DVDs, design interactivity and user interface, animations, screen savers, games, presentations, interactive training and simulations.

Types Of Authoring Tools n Card- or Page-based Tools n Icon-based Tools n Time-based Tools

Card- or Page-based Tools In these authoring systems, elements are organized as pages of a book or stack of cards. The authoring system lets you link these pages or cards into organized sequence and they also allow you to play sound elements and launch animations and digital videos. Page-based authoring systems are object-oriented: the objects are the buttons, graphics and etc. Each object may contain a programming script activated when an event related to that object occurs. EX: Visual Basic

Icon-based Authoring Tools Icon-based, event-driven tools provide a visual programming approach to organizing and presenting multimedia. First you build the flowchart of events, tasks and decisions by using appropriate icons from a library. These icons can include menu choices, graphic images and sounds. When the flowchart is built, you can add your content: text, graphics, animations, sounds and video movies. EX: Authoware Professional

Time-based Authoring Tools Time-based authoring tools are the most common of multimedia authoring tools. In these authoring systems, elements are organized along a time line. They are the best to use when you have message with the beginning and an end. Sequentially organized graphic frames are played back at the speed that you can set. Other elements (such as audio events) are triggered at the given time or location in the sequence of events. EX: Animation Works Interactive

Multimedia software Desktop publishing packages DTP packages, such as Microsoft Publisher and Quark Express use material such as text and graphics that have already been created and saved to another file. The material already created is imported into the DTP package, which allows you to lay out your page in any format you choose. Most DTP packages come with a number of templates such as Newspaper Front Page, Birthday Cards and Calendars ready for you to import material to create your own design.

Elemental Tools Elemental tools help us work with the important basic elements of your project: its graphics, images, sound, text and moving pictures. Elemental tools includes: n n n n Painting And Drawing Tools Cad And 3 -D Drawing Tools Image Editing Tools OCR Software Sound Editing Programs Tools For Creating Animations And Digital Movies Helpful Accessories

Painting And Drawing Tools Painting and drawing tools are the most important items in your toolkit because the impact of the graphics in your project will likely have the greatest influence on the end user. Painting software is dedicated to producing excellent bitmapped images . Drawing software is dedicated to producing line art that is easily printed to paper. Drawing packages include powerful and expensive computer-aided design (CAD) software. Ex: Desk. Draw, Desk. Paint, Designer

CAD And 3 -D Drawing Tools CAD (computer-aided design) is a software used by architects, engineers, drafters, artists and others to create precision drawings or technical illustrations. It can be used to create two-dimensional (2 -D) drawings or three dimensional modules. The CAD images can spin about in space, with lighting conditions exactly simulated and shadows properly drawn. With CAD software you can stand in front of your work and view it from any angle, making judgments about its design. Ex: Auto. CAD

Image Editing Tools Image editing applications are specialized and powerful tools for enhancing and retouching existing bitmapped images. These programs are also indispensable for rendering images used in multimedia presentations. Modern versions of these programs also provide many of the features and tools of painting and drawing programs, and can be used to create images from scratch as well as images digitized from scanners, digital cameras or artwork files created by painting or drawing packages. Ex: Photoshop

Sound Editing Programs Sound editing tools for both digitized and MIDI sound let you see music as well as hear it. By drawing the representation of the sound in a waveform, you can cut, copy, paste and edit segments of the sound with great precision and making your own sound effects. Using editing tools to make your own MIDI files requires knowing about keys, notations and instruments and you will need a MIDI synthesizer or device connected to the computer. Ex: Sound. Edit Pro

Tools For Creating Animations And Digital Movies Animations and digital movies are sequences of bitmapped graphic scenes (frames), rapidly played back. But animations can also be made within an authoring system by rapidly changing the location of objects to generate an appearance of motion. Movie-making tools let you edit and assemble video clips captured from camera, animations, scanned images, other digitized movie segments. The completed clip, often with added transition and visual effects can be played back. Ex: Animator Pro and Super. Video Windows

Multimedia Hardware Peripherals n Input devices n Output devices n Storage devices n Communication devices _Modems _Network Interfaces

Input Devices n n Keyboards And Mice Scanners And Digital cameras MIDI Keyboards Touch screens Trackballs Tablets

Continue… n Voice recognition systems n Infrared remotes

Continue… n Magnetic Card Encoders And Readers n Video cameras

Output Devices n n Monitors Speakers VR helmet and VR immersive display Video Devices

Storage Device n Syquest drives

Continue… n CD-ROM Drives n Magneto-optical drives Laserdisc Player