MULTIMEDIA MULTIMEDIA TECHNOLOGYTECHNOLOGY

POO KUAN HOONGPOO KUAN HOONG

Course Info :Course Info :

Lecturer : Poo Kuan HoongLecturer : Poo Kuan Hoong Email : Email : khpoo2002@yahoo.comkhpoo2002@yahoo.com Phone : 03-83125407Phone : 03-83125407 Course websiteCourse website

http://www.angelfire.com/alt/smm3001http://www.angelfire.com/alt/smm3001

INTRODUCTIONINTRODUCTION

What is multimedia?What is multimedia? Multimedia is the seamless Multimedia is the seamless

integration of text, sound, images integration of text, sound, images of all kinds and control software of all kinds and control software within a single digital information within a single digital information environmentenvironment

- Tony FeldmanTony Feldman

Multimedia is more than a high Multimedia is more than a high technology buzzword – powerful technology buzzword – powerful way to educate, entertain and way to educate, entertain and informinform

Why is it important?Why is it important?

Multimedia is :Multimedia is : Changing the nature of readingChanging the nature of reading A link to the information A link to the information

superhighwaysuperhighway Highly effectiveHighly effective Helping to spread the information Helping to spread the information

ageage

Why is it important?Why is it important?

People retain only 20% of what they see and 30% of what they hear. But remember 50% of what they see and hear, and as much as 80% of what they see, hear and do simultaneously.

Who can use it?Who can use it?

Multimedia can be used by Multimedia can be used by people from all level:people from all level: From different professionFrom different profession Technical or non technicalTechnical or non technical Entertainment, education, Entertainment, education,

computer industry and computer industry and telecommunicationtelecommunication

Definition of multimediaDefinition of multimedia

There’re a lot of different opinion There’re a lot of different opinion about definition of multimediaabout definition of multimedia

Definition can be based on :Definition can be based on : ApplicationApplication Computer system (hardware & Computer system (hardware &

software) – the focus of this classsoftware) – the focus of this class Communication & networkCommunication & network

What is multimedia?What is multimedia?

Direct translationDirect translation MultiMulti

2 key elements2 key elements1.1. Presentation of information through Presentation of information through

multiple media (one or more than one multiple media (one or more than one media)media)

- allow computing to move from text - allow computing to move from text and data into the realm of graphics, and data into the realm of graphics, sound, images and full motion videosound, images and full motion video

2.2. Non-linear navigation through Non-linear navigation through applications for access to information applications for access to information on demand, which also termed on demand, which also termed hypermediahypermedia

What is multimedia?What is multimedia?

Direct translationDirect translation MediaMedia

Based on a form of human Based on a form of human interaction using computer for interaction using computer for processing (video, audio, text, processing (video, audio, text, graphics and image)graphics and image)

What is Multimedia?What is Multimedia?

In general, 3 main In general, 3 main characteristics of hypermedia characteristics of hypermedia system :-system :- Allow compact form of storage, Allow compact form of storage,

quick and convenient access of quick and convenient access of informationinformation

Offering high level of control – Offering high level of control – opportunity to diverge from a opportunity to diverge from a linear pathlinear path

Enhance the benefit & frequency Enhance the benefit & frequency of interactionof interaction

Multimedia TechnologyMultimedia Technology

Multimedia services and system Multimedia services and system rely on:rely on:

1.1. Computer system architectureComputer system architecture2.2. Network communicationNetwork communication3.3. Software technologiesSoftware technologies4.4. User interfaceUser interface

In the context of computer system In the context of computer system (focus of this class)(focus of this class)

Multimedia computer system that has Multimedia computer system that has the capability to integrate two or more the capability to integrate two or more media in one single electronic media in one single electronic document.document.

History of MultimediaHistory of Multimedia

1970s : a slide show format was introduced on the computer (specialized computer, designed to control slide shows)

1980s : personal computers were designed to integrate with various forms of media. Some external devices i.e. external drive, larger monitor, video projector, and external sound amplifier can be used to support the computer

History of MultimediaHistory of Multimedia

During 1980s, custom-built applications were created using interactive videodiscs - optical storage units that contain audio and video in analog form

1990s : computer manufacturers made their systems more accessible to third-party developers. Formerly, multimedia lies in the arts and education

History of MultimediaHistory of Multimedia

At the beginning of the 1990s, developments in digital technology encouraged the creation of multimedia 'titles' - compact discs containing audio and video in digital form that could be played back on a personal computer, equipped with a compact disc player, a sound board and speakers. In digital form, information can be processed, stored and transmitted over computer networks

What are the benefits?What are the benefits?

Computing with multimedia is Computing with multimedia is important for three segment of important for three segment of society :society : Information consumersInformation consumers

research and reference materials education games and entertainment telemarketing

What are the benefits?What are the benefits?

Computing with multimedia is Computing with multimedia is important for three segment of important for three segment of society :society : Information providersInformation providers

consumer and retail kiosks network information delivery sales and commercial presentations simulations and training electronic publishing

What are the benefits?What are the benefits?

Computing with multimedia is Computing with multimedia is important for three segment of important for three segment of society :society : Information workersInformation workers

multimedia databases data visualisation groupware or cooperative computing personal communications

Benefits of using MultimediaBenefits of using Multimedia

BusinessBusiness Marketing & SalesMarketing & Sales Education & TrainingEducation & Training MedicineMedicine

Problems with MultimediaProblems with Multimedia

Investment costs - costs of development, hardware & software.

Technical barriers - in terms of new terminology (acronyms, i.e. MPEG, JPEG, VCD), technology, and compatibility of hardware and software.

Social & psychological barriers - loneliness, isolation and lack of contact.

Problems with MultimediaProblems with Multimedia

Legal problems - developers of multimedia application need to identify and contact the owners of copyright of all materials that forms the content of their applications.

Not suitable for text-intensive and linear content

Types of Multimedia UsedTypes of Multimedia Used

TextText fundamental component - used to

convey basic informationchange font/font size, different

colors for different blocks of text Interactive links - also called

hyperlinks , hotwords. e.g. to display additional information

Types of Multimedia UsedTypes of Multimedia Used

Still graphics & ImagesStill graphics & Imagesgraphics that contain no

movement e.g. photographs and drawings.

can be obtained from clipart sites, created by yourself, scanned, digitized photos from a digital camera, collection from a CD-ROM.

important because people are visually oriented

Types of Multimedia UsedTypes of Multimedia Used

AnimationAnimationmoving graphic images - range

from the simple motion of a basic graphic image to the complex movement of very detailed images.

used to convey information more vividly than just text and graphics

Types of Multimedia UsedTypes of Multimedia Used

AudioAudiosound that has been digitized and

stored in some form for replay can be captured digitally using a

microphone, CD-ROM, radio, or any other device that can transmit sound into the hardware that is installed in a personal computer

supplement text and graphics enhance understanding

Types of Multimedia UsedTypes of Multimedia Used

VideoVideocomprised of photographic images

that display at speeds of 15 to 30 frames per second and provide the appearance of motion in real-time.

problem is that video files are large in size- a single second of uncompressed video running at the speed of a movie requires 30 MB of storage space

Multimedia ApplicationMultimedia Application

Computer-based training self-paced study reduced training time one-on-one interaction reduced training costs unique instructional experience

Special education Electronic Books and

References How-to Guides

Multimedia ApplicationMultimedia Application

Magazines Entertainment

Most popular Virtual Reality Information kiosks

ranging from bank machines to mall information centre to Point-of-Sales system

characteristics- simple functions & easy to use

Multimedia ApplicationMultimedia Application

Electronic Marketing and Sales The Internet and the World Wide

Web applications

EvaluationEvaluation

It is critical that users & It is critical that users & developers understand how to developers understand how to evaluate the quality or evaluate the quality or usefulness of a productusefulness of a product

There’re 2 perspectives for There’re 2 perspectives for evaluation :evaluation : The userThe user The developerThe developer

The user’s perspectiveThe user’s perspective

Is often not considered a feature Is often not considered a feature of multimedia evaluationof multimedia evaluation

User issues can be generally User issues can be generally categorized as :categorized as : Subject/contentSubject/content Platform (hardware & software)Platform (hardware & software) UsabilityUsability Cost Cost

The developer’s perspectiveThe developer’s perspective

Developers of multimedia Developers of multimedia products should be view products should be view evaluation as tools to make evaluation as tools to make product better than the lastproduct better than the last

This is to prevent repetition of This is to prevent repetition of previous mistakesprevious mistakes

The developer’s perspectiveThe developer’s perspective

Many of these issues should be Many of these issues should be considered throughout the considered throughout the development process :development process : ContentContent PerformancePerformance DeliveryDelivery Interface Interface