1. Chapter 8: Digital Media1 Digital Media Chapter 8

2. Chapter 8: Digital Media2 Digital Sound Digital Audio Basics Portable Audio Players MIDI Music Speech Recognition and Synthesis

3. Chapter 8: Digital Media3 Digital Audio Basics Digital representation of sound

4. Chapter 8: Digital Media4 Digital Audio Basics Sampling rate

5. Chapter 8: Digital Media5 Digital Audio Basics Sound cards

6. Chapter 8: Digital Media6 Waveform Audio The most popular waveform audio formats include AAC, AIFF, MP3, RealAudio, Wave, and WMA Audio or media player software allows you to record and play waveform audio files You can embed waveform files into a Web page

7. Chapter 8: Digital Media7 MIDI Music MIDI (Musical Instrument Digital Interface) MIDI-capable sound cards contain a wavetable

8. Chapter 8: Digital Media8 MIDI Music MIDI music tends not to have the full resonance of waveform audio.

9. Chapter 8: Digital Media9 MIDI Music Music composition software provides tools for entering notes, specifying instruments, printing sheet music, and saving compositions in formats such as MIDI.

10. Chapter 8: Digital Media10 Speech Recognition and Synthesis Speech synthesis Speech recognition

11. Chapter 8: Digital Media11 Speech Recognition and Synthesis

12. Chapter 8: Digital Media12 Bitmap Graphics Bitmap Basics Scanners and Cameras Image Resolution Color Depth and Palettes Image Compression Bitmap Graphics Formats

13. Chapter 8: Digital Media13 Bitmap Graphics Composed of a grid of dots

14. Chapter 8: Digital Media14 Scanners and Cameras Graphics software is used to modify or edit bitmap graphics Can require a lot of storage space

15. Chapter 8: Digital Media15 Image Resolution What is image resolution?

16. Chapter 8: Digital Media16 Image Resolution File size of bitmaps can be reduced by cropping

17. Chapter 8: Digital Media17 Image Resolution Pixel interpolation

18. Chapter 8: Digital Media18 Color Depth and Palettes Color depth Color palettes

19. Chapter 8: Digital Media19 Color Depth and Palettes

20. Chapter 8: Digital Media20 Image Compression What is image compression? –Lossless compression –Lossy compression

21. Chapter 8: Digital Media21 Image Compression Popular file compression utilities, such as WinZip, zip one or more files into a new compressed file with a.zip extension.

22. Chapter 8: Digital Media22 Bitmap Graphic Formats

23. Chapter 8: Digital Media23 Vector and 3-D Graphics Vector Graphics Basics Vector-to-Bitmap Conversion Vector Graphics on the Web 3-D Graphics

24. Chapter 8: Digital Media24 Vector Graphics Vector graphics use geometrical primitives, based on mathematical equations, to represent images in computer graphics.

25. Chapter 8: Digital Media25 Vector Graphics vs. Bitmaps Resizing Storage space Realism Editing

26. Chapter 8: Digital Media26 Vector Graphic Basics

27. Chapter 8: Digital Media27 Vector-to-Bitmap Conversion Rasterization Tracing software

28. Chapter 8: Digital Media28 Vector Graphics on the Web SVG (Scalable Vector Graphics) and Flash are vector graphic formats for the Web Advantages of using vector graphics

29. Chapter 8: Digital Media29 3-D Graphics Stored as a set of instructions Rendering Ray tracing

30. Chapter 8: Digital Media30 3-D Graphics

31. Chapter 8: Digital Media31 Digital Video Digital Video Basics Video Output

32. Chapter 8: Digital Media32 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 Desktop, PDA, and Web Video DVD-Video

33. Chapter 8: Digital Media33 Video Output –DVD-video –PDA video

34. Chapter 8: Digital Media34 Video Output

35. Chapter 8: Digital Media35 Digital Rights Management DRM Basics Signal Scrambling and Digital Watermarks CD Copy Protection DVD DRM DRM for Digital Downloads

36. Chapter 8: Digital Media36 DRM Basics Digital rights management (DRM) –Things that are sometimes allowed: Time shifting (like a DVR) Place shifting Format shifting

37. Chapter 8: Digital Media37 Signal Scrambling and Digital Watermarks Signal scrambling Digital watermark Broadcast flag

38. Chapter 8: Digital Media38 CD Copy Protection Copy protection

39. Chapter 8: Digital Media39 DVD DRM Copy generation management

40. Chapter 8: Digital Media40 DVD DRM Analog protection system CSS (Content Scramble System)

41. Chapter 8: Digital Media41 DVD DRM DVD region code AACS (Advanced Access Content System)

42. Chapter 8: Digital Media42 DRM for Digital Downloads FairPlay

43. Chapter 8: Digital Media43 Chapter 8 Complete Digital Media