Upload
jeeva
View
39
Download
2
Embed Size (px)
DESCRIPTION
good
Citation preview
Learning Objectives Describe what multimedia is and some
advantages and disadvantages of using it.
Explain the difference between the following multimedia elements: text, graphics, animation, audio, and video.
List several Web-based and non-Web-based multimedia applications.
Learning Objectives, cont’d. Briefly describe the basic steps and principles
involved with multimedia and Web site design.
Discuss the various tasks involved with multimedia and Web site development.
Speculate as to the format of multimedia in the future.
Overview This chapter covers:
The elements of multimedia
Common multimedia applications
Design principles of multimedia
Multimedia and Web development
What Is Multimedia? Multimedia refers to any type of application
or presentation that uses more than one type of media.
An application is interactive if the user can control the flow or content by using a touch screen, keyboard, or mouse to select options or turn pages.
Advantages and Disadvantages of Using Multimedia Advantages
Can fit a variety of learning styles More interesting and enjoyable experience Can be easier to understand
Disadvantages Cost Amount of storage space required Limitations of Web-based multimedia
Multimedia Elements:Text Serif typefaces are typically used for large
bodies of text; sans serif typefaces are more commonly used for headings.
Different typefaces can convey widely different feelings and impressions.
Point size should be selected carefully to make sure text is readable while not taking up too much of the screen.
Multimedia Elements: Graphics Graphics are digital representations of images.
Clip art and stock photographs are widely available on CD and on the Web.
Graphic file formats include:
BMP
TIF
GIF
JPEG
PNG
Multimedia Elements: Animation Animation involves a series of graphical images
displayed one after another to simulate movement.
Page transitions, animated GIFs, Java applets, Shockwave, and Flash are common types of animation.
Animation can also be added using JavaScript or a programming language.
Multimedia Elements: Audio Audio is sound, such as music, spoken voice,
and sound effects. Audio can be recorded using a microphone or
MIDI device, captured from a CD, or downloaded from the Internet.
Common audio formats include: wav mp3 midi
aif dcr swf
Multimedia Elements: Video Video usually begins as a continuous stream of
visual information; it is broken down into individual frames when recorded.
Can be recorded using standard video camera and then input into computer, or recorded directly into PC or onto digital media using digital video camera.
Common formats include avi, mpeg, mov, and rm.
Non-Web-Based Multimedia Applications Business
presentations
Reference materials
Virtual reality
Computer-based training
Entertainment
Information kiosks
Web-Based Multimedia Applications Web-based training
Self-paced instruction Ability to update material Immediate feedback
Entertainment Online games Distribution of music
Virtual reality VRML allows Web
delivery
Basic Design Principles Applications should be interesting and exciting.
Web site content should be changed on a regular basis.
Navigation should be clear, consistent, and easy to understand.
Web site pages should load quickly, and CD applications should fit on one CD whenever possible.
Basic Design Principles, cont’d. A Web site should work on a variety of PC
configurations. Consider carefully:
Features that require a specific browser
Features that require little-used plug-ins
Content wider than a typical browser window
High-bandwidth items
Determining the Intended Audience and Objectives
The intended audience will help determine the appearance of the application.
The objectives will help determine the content.
Using Flowcharts, Page Layouts, and Storyboards Flowcharts can be used to describe how pages
of the site or application relate to one another.
Page layouts are commonly used to design the appearance of a Web site.
Storyboards are commonly used with multimedia applications to illustrate the appearance and content of each screen in an application.
Navigational Design Considerations A site should be well organized (use the three-
mouse-clicks rule).
Larger sites can use a site map.
Other navigational tools include: Drop-down menus Search boxes Text- and image-based navigation bars Frames
Access Considerations Modifications should be made for users with
nontraditional PCs, such as: Mobile devices Text-only browsers Screen readers
Federal Web sites need to comply with Web Accessibility Initiative (WAI) guidelines.
Multimedia and Web Site Development Development process includes three steps:
Creating the multimedia elements
Creating the application or Web site
Testing the site or application
Creating the Multimedia Elements Graphics software
Painting and drawing programs Image editing programs
Audio and video software
Animation software
Creating the Application or Web Site Multimedia authoring software
Director, Authorware, Toolbook
Web site authoring software Dreamweaver, HomeSite, GoLive
Storefront software
Testing the Site or Application Test navigation Test usability Proofread carefully Web site considerations:
Browser and computer incompatibility Download time Broken links
Stress test