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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. 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

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  1. Please turn your cell phone off. Multimedia Applications and Production Digital Data Representation Digital Audio Digital Graphics Interactive Media

  2. Digital Data Representation

  3. 8 Bits = a Byte The Bit General Rule: 2bits = units of info

  4. 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)

  5. 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)

  6. Bit & Bytes • Bytes can also represent “values” using the binary number system

  7. Bit & Bytes 128 64 32 16 8 4 2 1 Binary Counter

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

  9. 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

  10. Digitizing Pictures & Video • Images are made up of pixels whose colors are stored using binary numbers.

  11. 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

  12. 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.

  13. Digital Audio

  14. 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.

  15. Digital Music & Sound

  16. 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

  17. Digital Music File Formats Town.mid

  18. 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

  19. Digital Music Services Click to Compare

  20. 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

  21. Digital Graphics

  22. 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.

  23. Digital Graphics at Work • Creative Expression • Presenting Information • Communicating Ideas • Exploring New Ideas • Entertainment • Designing Real-world Objects • Documenting Life

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

  25. 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.

  26. 3-D Modeling Software 3-D Modeling is sometimes referred to as Ray Tracing.

  27. http://www.strata.com/cx/ http://www.irtc.org/

  28. http://www.this-wonderful-life.com/index.htm

  29. 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

  30. 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/

  31. 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.

  32. http://www.worth1000.com

  33. Portable Digital Video Hardware • Portable Media Player (PMP)

  34. Interactive Media

  35. 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

  36. 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

  37. 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/

  38. Portable Gaming Hardware • PlayStation Portable • Nintendo DS

  39. 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

  40. 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

  41. Don’t forget to turn your phone back on!! Questions?

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