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Chapter 8
 Digital Media
8 Digital Audio Basics
    Digital representation of sound




                                       2
Chapter 8: Digita...
8 Digital Audio Basics
    Sound cards are responsible for transforming
     bits stored in an audio file into music, sou...
8 Bitmap Graphics
    Composed of a grid of dots
          – Color of each dot is stored as a binary number




         ...
8 Scanners and Cameras
    Graphics software is used to modify or edit
     bitmap graphics
          – Modify individual...
8 Image Resolution
    Expressed as the number of horizontal and
     vertical pixels
          – Higher resolutions cont...
8 Image Compression
    Any technique that recodes data in an image
     file so it contains fewer bits




             ...
8 Digital Video Basics
    Uses bits to store color and brightness data
     for each video frame
    Different kinds of...
8 Video Transfer
    Raw, uncompressed formats are ideal for
     editing
    Video capture software can:
          – De...
8 Video Output




                           10
Chapter 8: Digital Media
8 DRM Basics
    Digital rights management (DRM) is a
     collection of techniques used by copyright
     holders to lim...
8 CD Copy Protection
    Copy protection refers to technologies
     designed to prohibit consumers from copying
     con...
8 DVD DRM
    Copy generation management is a digital
     watermark that specifies the number of times
     a content st...
8 Today’s Fun Thought
    Why doesn't glue stick to the
     inside of the bottle?
8   Quotable

When deeds speak, words are nothing

         African proverb
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Chapter 8 Digital Media

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Chapter 8 Digital Media

  1. 1. Chapter 8 Digital Media
  2. 2. 8 Digital Audio Basics Digital representation of sound 2 Chapter 8: Digital Media
  3. 3. 8 Digital Audio Basics Sound cards are responsible for transforming bits stored in an audio file into music, sound effects, and narrations – Digital signal processor 3 Chapter 8: Digital Media
  4. 4. 8 Bitmap Graphics Composed of a grid of dots – Color of each dot is stored as a binary number 4 Chapter 8: Digital Media
  5. 5. 8 Scanners and Cameras Graphics software is used to modify or edit bitmap graphics – Modify individual pixels to • Retouch photographs • Wipe out red eye • MANY other fixes! • Ethics of digital editing??? 5 Chapter 8: Digital Media
  6. 6. 8 Image Resolution Expressed as the number of horizontal and vertical pixels – Higher resolutions contain more data (larger file size) and are higher quality Bitmaps do not have a fixed physical size 6 Chapter 8: Digital Media
  7. 7. 8 Image Compression Any technique that recodes data in an image file so it contains fewer bits 7 Chapter 8: Digital Media
  8. 8. 8 Digital Video Basics Uses bits to store color and brightness data for each video frame Different kinds of digital videos: – Desktop video – Web-based video – DVD-video – PDA video 8 Chapter 8: Digital Media
  9. 9. 8 Video Transfer Raw, uncompressed formats are ideal for editing Video capture software can: – Decrease video display size – Reduce the frame rate – Compress data 9 Chapter 8: Digital Media
  10. 10. 8 Video Output 10 Chapter 8: Digital Media
  11. 11. 8 DRM Basics Digital rights management (DRM) is a collection of techniques used by copyright holders to limit access and use of digital content 11 Chapter 8: Digital Media
  12. 12. 8 CD Copy Protection Copy protection refers to technologies designed to prohibit consumers from copying content 12 Chapter 8: Digital Media
  13. 13. 8 DVD DRM Copy generation management is a digital watermark that specifies the number of times a content stream can be duplicated 13 Chapter 8: Digital Media
  14. 14. 8 Today’s Fun Thought Why doesn't glue stick to the inside of the bottle?
  15. 15. 8 Quotable When deeds speak, words are nothing African proverb

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