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ITMA Lecture 05

Multimedia Application

K Ng

Fall 2008

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Objectives

Understand the value and use of digital audio in a

variety of career areas and in your life

Describe the many uses of 2-D and 3-D digital

graphics and imaging media

Discuss how interactive media is used to educate

and entertain

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The Value of Digital Audio

Digital audio

Encompasses digital music and digital sound

Digital music

Any music that is stored digitally, regardless of how

it was originally created

Digital sound

The spoken word

Other nonmusic sounds and sound effects that are

stored and manipulated digitally

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Digital Music Production

Synthesizer

Produces sounds designed to be similar to real

instruments

Produces new sounds unlike any that a traditional

instrument could produce

Sampler

Digitally records real musical instrument sounds

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Digital Music Distribution

Digital music

Burned to CD using a special music format for CD

audio

MP3 file format

Compresses music files to less than 10 percent of

their original size

Sound compression

Removes frequencies that are beyond the range of

human hearing

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Digital Music Production

(Continued)

Electronic drum machines

Allow the musician to record drum beat patterns

Sequencer

Allows musicians to create multitrack recordings

The musical instrument digital interface (MIDI)

protocol

Implemented in 1983

Provides a standard language for digital music

devices to use

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Digital Music Distribution Channels

Business-to-business (B2B) distribution

Commonly conducted between music studios and

their customers

Business-to-consumer (B2C) distribution

Occurs through retailers selling CDs and online

services

MP3 music file format

Provides computer users with music files that are

small and easy to share

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The Value of Digital Graphics

Digital art

Uses computer software as paintbrush and the

computer display as the canvas

Digital graphics

Used as a form of creative expression

Used as a means of visually presenting information

Photographers and videographers

Use digital graphics software to edit digital images

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Presenting Information

Web designers

Specialists in creating attractive Web page designs

Use graphics software to design buttons,

backgrounds

Desktop publishing software

Design page layouts for magazines, newspapers,

books

Digital video

Being increasingly used to present news and

information over the Web

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Vector Graphics Software

Provides tools to

Create, arrange, and layer graphical objects on the

screen to create pictures

Vector graphics

Uses an object-oriented approach

The primary benefit of the object-oriented approach

Objects in the picture can be manipulated

independently

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3-D Modeling Software

Provides graphics tools that allow artists to

Create pictures of 3-D, realistic models

3-D modeling

Often referred to as ray-tracing

Rendering

The process of calculating light interaction with the

virtual 3-D models in the scene

3-D graphics

Act as a foundation for other technologies

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Computer Animation

Digital graphics animation

Displaying digital images in rapid succession

Animated GIFs

Allow the artist to draw several images

When played in succession, they create the illusion

of motion

Images are stored in one GIF file

Flash

Provides a timeline tool used to cue movement in

the animation

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Computer Animation (Continued)

3-D computer animation

Much more complex than 2-D computer animation

The complexity of 3-D graphic rendering, multiplied

by the necessity to render 24 3-D images per

second

3-D computer animation software

Able to move animated characters according to

direction of the artist

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Photo-editing Software

Includes special tools and effects

Designed for improving or manipulating bitmapped

photograph images

Practical tools

Altering the hue and saturation of colors in the

photograph

Smoothing surfaces or removing flaws in surfaces

Removing “red eye”

Smoothing edges or bringing out of focus shots into

focus

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Creative Imaging Example – Gametap.com’s magazine ad.

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Creative Imaging Example – Singapore Telecom Engineering’s magazine ad.

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Digital Video Editing

Video-editing software

Allows editing of bad footage

Rearranges good footage to produce professional-

quality video production

Storyline allows the videographer to

Arrange video scenes sequentially

Specify the transition effects between each scene

Forensic graphics

Used to create animations and demonstrative

exhibits

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Interactive Media

Multimedia presentations that involve

User interaction for education, training, or

entertainment

Combines both digital audio and digital video media

Video games

Make up a large portion of the interactive media

market

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Education and Training

Authorware

Used to produce interactive multimedia educational

tutorials

Interactive multimedia is being used in

The traditional classroom setting

Distance learning

Museums

Skills-training

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Commercial Applications of

Interactive Multimedia

Interactive multimedia

Plays a large role in Web-based e-commerce

The technology that underlies 3-D product viewing

Used to provide product support and customer

training

Playing a large role in attracting customers to Web

sites

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Demo link:

http://www.juniper.net/products/models/srx5800/index.html

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Interactive Multimedia Entertainment

Video games

Employ nearly every aspect of digital media

Gaming consoles on the market today

The Nintendo GameCube

The Sony Playstation 2 (PS2)

The Microsoft Xbox

Video game consoles

Highpowered multiprocessor computers designed to

support 3-D interactive multimedia

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Interactive Multimedia

Entertainment (Continued)

Game designers

Develop the game’s theme, storyline, rules,

characters, and environment

Game artists

Use 2-D or 3-D graphics tools to develop game

characters and backgrounds

Game sound designers

Provide background music, voices, and sound

effects

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Interactive Multimedia

Entertainment (Continued)

Game Programmers

Take all pieces and encode them into game

software

Game testers

Check the final product for bugs and glitches

Provide feedback

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Interactive TV

Digital television service that includes one or more

of the following:

Video on demand

Personal video recorder

Local information on TV

Purchase over TV

Internet access over TV

Video games over TV

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Interactive TV (Continued)

Video On Demand (VoD)

Customers can select from hundreds of movies to

watch at anytime

Personal Video Recorders (PVR)

Provide large hard drive storage to record movies

and programs

Local Information on TV

Provides local community news and information

Internet Access over TV

Viewers can navigate the Web on their television

sets

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What’s New in Multimedia?

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What’s New in Multimedia?

2004—The Year of the iPod

In 2004, more than 10 million people purchased digital

music players.

2005—The Year of the Portable Media Center?

Samsung and Creative released portable media players

which store and play music and video using Microsoft

Windows Portable Media Center software

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Latest Digital Media Centers…

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What’s New in Multimedia?

Cell phone media

Smart phones

High-memory cell phones

iTunes on cell phones

Television on a cell phone?

Handheld gaming gets serious

The PlayStation Portable from Sony

High-quality 3-D graphics in a handheld design

HDTV

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Summary

Digital audio

Includes both digital music and digital sound

Sound production

Important part of music, movies, radio, television,

video games, and the Internet

Digital technology

Applied to all aspects of the music industry

The MIDI (Musical Instrument Digital Interface)

Implemented in 1983

Provides a standard language for digital music

devices

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Summary (Continued)

Digital graphics

Media applications

Used as a form of creative expression

Photo-editing software

Editing tools for manipulating digital photographs

Interactive media

Multimedia presentations