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Please turn your cell phone off. Multimedia Applications and Production. Digital Data Representation Digital Audio Digital Graphics Interactive Media. Digital Data Representation. 8 Bits = a Byte. The Bit. General Rule: 2 bits = units of info. Bits & Bytes. Byte = 8 bits

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Multimedia applications and production

Please turn your cell phone off.

Multimedia Applications and Production

Digital Data Representation

Digital Audio

Digital Graphics

Interactive Media



The bit

8 Bits = a Byte

The Bit

General Rule:

2bits = units of info


Bits bytes
Bits & Bytes

  • Byte = 8 bits

  • Kilobytes = 1,000 Bytes (210)

  • Megabytes = Million Bytes (220)

  • Gigabytes = Billion Bytes (230)

  • Terabytes = Trillion Bytes (240)

  • Petabytes = Quadrillion Bytes (250)


Bit bytes
Bit & Bytes

  • Bytes can represent any collection of items using a “look-up table” approach

  • ASCII is used to represent characters

ASCIIAmerican Standard Code for Information Interchange

Also check http://www.network-science.de/ascii/ (click binary)


Bit bytes1
Bit & Bytes

  • Bytes can also represent “values” using the binary number system


Bit bytes2
Bit & Bytes

128

64

32

16

8

4

2

1

Binary Counter


Digitizing sound
Digitizing Sound

  • A sound wave is “sampled” at predefined time intervals (sampling rate) the amplitude for each sample is stored as a binary number.


Digitizing sound1

30

20

30

30

30

10

20

20

20

20

amplitude

0

12

10

10

10

4

2

2

-10

0

0

0

0

-1

-3

-4

-4

-20

-10

-10

-10

-10

-10

-30

10

20

-18

-18

-20

-20

Milliseconds (ms)

-28

-30

10

20

-30

1. An analog sound wave is…

2. “sampled” at regular time slice, and

3. stored as a sequence of numeric values… (30,-10,-28,-4,20,…)

Digitizing Sound

Digital Music File10010100010010010001001001001011000101010101010010010010

1001010001001001000100100100101100010101010101001001001010010100010010010001001001001011000101010101010010010010

Digital Oscillograph


Digitizing pictures video
Digitizing Pictures & Video

  • Images are made up of pixels whose colors are stored using binary numbers.


Digitizing pictures video1

3. Pixel colors in byte code

2. Image super zoomed

1. Image at proper resolution

10010010 11000011 10101010

10010010 11000111 10101010

10010010 11001111 10101010

10010010 11011111 10101010

10010010 11111111 10101010

10010011 11111111 19111911

10010111 11111111 00110101

10010011 11000011 11000110

10010111 11000011 10011000

10011111 11000011 11110000

10010011 11111011 00010001

10011010 11111111 10100001

10011110 11111111 11100110

10010111 11000011 11000011

10011111 11000011 00110011

10010011 11111011 11101011

Digitizing Pictures & Video

  • Colors are represented as varying intensities of combinations of Red, Green, and Blue (RGB )

  • 3 bytes (one for each of RGB) can represent over 16 million colors

  • Often times the Hexidecimal number system is used to represent colors. Hex uses values 0 1 2 3 4 5 6 7 8 9 A B C D E F

Colormap Tool


The value of the digit
The Value of the Digit

  • Anything that can be measured or expressed can be digitized.

  • Digital information is easy to manipulate.

  • Digital information is easy to replicate and transfer.

  • Digital information is long lasting.



Digital music sound
Digital Music & Sound

  • Sound Production Studio

Westlake Audio Studio in Hollywood, CA uses millions of dollars worth of digital audio equipment to produce music CDs, sound tracks for motion pictures, and many other audio services.



Digital music media

Click

Creative's Sound Blaster Wireless Music (listed at $250) is the first digital media receiver to offer music-file navigation via a remote control with a large LCD. The idea is that once you've configured the small, modem-size base unit to work with your Wi-Fi network, you'll be able to stream music over the system to any stereo or even a set of powered speakers (think party in your backyard).

http://reviews.cnet.com/4521-6531_7-5021436-2.html?tag=dir.top

Digital Music Media

  • CDs, CD-Rs, CD-RWs, Mini-disks

  • Flash Memory

  • Hard Drive



Digital music distribution channels

99 cents

$14.95 pmor 99 cents

$12.95 pm

$9.99 pm

Digital Music Distribution Channels

  • Purchase new on CD

  • Internet music services

    • Per-song

    • Monthly Subsciption

  • Satellite Radio

  • Illegal methods

    • File sharing networks

    • Copying CDs


Digital music services
Digital Music Services

Click to Compare


Personal music hardware software
Personal Music Hardware & Software

  • Hardware

    • Multi-format CD Players

    • Portable Players

    • Media PCs

  • Software

    • CD Ripping

    • Encoding Software

    • Recording and Editing Software

    • Jukebox, and Media Player Software



Digital graphics1
Digital Graphics

  • Digital Graphics refers to the family of computer-based media applications that support the creation, editing, viewing of 2-D and 3-D images, animations, and video.


Digital graphics at work
Digital Graphics at Work

  • Creative Expression

  • Presenting Information

  • Communicating Ideas

  • Exploring New Ideas

  • Entertainment

  • Designing Real-world Objects

  • Documenting Life


Vector graphics software
Vector Graphics Software

  • Vector Graphics Software, or drawing software, provides tools to create, arrange, and layer graphical objects on the screen to create pictures.


3 d modeling software
3-D Modeling Software

  • 3-D Modeling Software provides graphics tools that allow artists to create pictures of realistic models.

    • Objects are created using a wire framework.

    • Surface textures are applied to the objects.

    • Light source is defined.

    • The scene is rendered – lighting, shapes, and surfaces are calculated to create a 3-D appearance on a 2-D display.


3 d modeling software1
3-D Modeling Software

3-D Modeling is sometimes referred to as Ray Tracing.


Multimedia applications and production

http://www.strata.com/cx/

http://www.irtc.org/



Computer animation
Computer Animation

  • 2-D Animation

    • Animated GIFs

    • Macromedia Flash

      • http://www.wired.com/animation/kids/

  • 3-D Animation

    • Involves rendering 24 3-D images per second.

    • Expensive Software

    • Avars are used to provide hinges for movements of characters.

    • http://www.pixar.com/howwedoit/index.html


Digital animation software
Digital Animation Software

  • Softimage/XSI v3.0 $13,000 http://www.softimage.com/Community/Xsi/video_gallery/

  • 3ds + Reactor = $1,795 http://www4.discreet.com/showandtell/showandtell.php?id=465#

  • Lightwave 3D, $1,595 http://www.newtek.com/products/lightwave/lw-gallery/videos/index.html

  • Renderman $ 5,500 https://renderman.pixar.com/


Photo editing software
Photo-editing Software

  • Bitmapped graphics: each pixel is defined as a color within the image.

  • Photo Editing Software allows you to

    • adjust the photo colors

    • add effects to the image

    • crop the image

    • focus or blur the image and many other effects

  • Today’s technology makes it easy to create realistic looking faked photos – thus photos are no longer trusted as evidence in court.



Portable digital video hardware
Portable Digital Video Hardware

  • Portable Media Player (PMP)



Interactive media in education
Interactive Media in Education

  • Authorware provides a toolkit for creating interactive 2-D tutorials and training for delivery on computer.

  • Software from companies like Mind Avenue provide tools for creating 3-D tutorials and training.

http://www.mindavenue.com


Commercial applications of interactive media
Commercial Applications of Interactive Media

  • 3-D interactive media is providing e-commerce websites with methods for allowing customers to examine products from all angles.

http://www.toyota.com


Interactive media entertainment
Interactive Media Entertainment

  • The ultimate in interactive media, video game consoles are high-powered multiprocessor computers designed to support 3-D interactive multimedia gaming.

    • http://www.microsoft.com/xbox/


Portable gaming hardware
Portable Gaming Hardware

  • PlayStation Portable

  • Nintendo DS


Interactive tv
Interactive TV

  • Interactive TV is a digital television service that includes one or more of the following:

    • Video on demand

    • Personal video recorder

    • T-Commerce

    • Internet access on TV

    • Video games over TV


The media center pc
The Media Center PC

  • Windows XP Media Center Edition runs on media PCs to provide the following services:

    • Television Receiver

    • Electronic program guide

    • Web browser

    • Personal video recorder

    • DVD Player

    • Digital Music Player

    • Digital Personal Photo and Video Library