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Chapter 8

Chapter 8. Digital Media. Digital Sound. Digital Audio Basics Portable Audio Players MIDI Music Speech Recognition and Synthesis. Digital Audio Basics. Digital representation of sound. Digital Audio Basics. Sampling rate. Digital Audio Basics. Sound cards. Waveform Audio.

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Chapter 8

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  1. Chapter 8 Digital Media Chapter 8: Digital Media

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

  3. Digital Audio Basics • Digital representation of sound Chapter 8: Digital Media

  4. Digital Audio Basics • Sampling rate Chapter 8: Digital Media

  5. Digital Audio Basics • Sound cards Chapter 8: Digital Media

  6. 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 Chapter 8: Digital Media

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

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

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

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

  11. Speech Recognition and Synthesis Chapter 8: Digital Media

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

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

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

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

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

  17. Image Resolution • Pixel interpolation Chapter 8: Digital Media

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

  19. Color Depth and Palettes Chapter 8: Digital Media

  20. Image Compression • What is image compression? • Lossless compression • Lossy compression Chapter 8: Digital Media

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

  22. Bitmap Graphic Formats Chapter 8: Digital Media

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

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

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

  26. Vector Graphic Basics Chapter 8: Digital Media

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

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

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

  30. 3-D Graphics Chapter 8: Digital Media

  31. Digital Video • Digital Video Basics • Video Output Chapter 8: Digital Media

  32. 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 Chapter 8: Digital Media

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

  34. Video Output Chapter 8: Digital Media

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

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

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

  38. CD Copy Protection • Copy protection Chapter 8: Digital Media

  39. DVD DRM • Copy generation management Chapter 8: Digital Media

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

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

  42. DRM for Digital Downloads • FairPlay Chapter 8: Digital Media

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

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