This document provides an overview of key elements of multimedia including text, graphics, digital audio, and video. It discusses formatting and file types, obtaining and editing various media types, and calculating file sizes. The document also covers authoring tools, describing different categories of tools and factors to consider when selecting an authoring paradigm.

1. Multimedia
Text and Graphics
 Elements of Text
• Text Technology Fonts
• Types of Fonts
• Fonts and Operating Systems
 Text Data Files
• ASCII
• Encoded and Decoded Text
• Rich Text Format
• Proprietary Text Formats
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2. Text Continues..
 Using Text in Multimedia Applications
• Labels and Captions
• Informational Text
• Navigation and User support
• Applying Text to Multimedia Projects
 Hypertext
• Indexed Retrieval Systems
• Linked or Hyperlinked Systems
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3. Graphics
 Elements of Graphics
• Pictures and Images
• Raster or Bitmap Images
• Vector Images
 Images and Color
• Computer Display Resolution
• Computer Generated Color
• Color Palettes and Color Look-Up Tables
• Color Dithering
• Color Flashing
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4. Graphics Continues…
 Graphics File and Application Formats
• Bitmap Formats
• Vector Formats
• Compressed Formats
• Proprietary Formats
 Obtaining Images for Multimedia use
• Paint and Drawing Applications
• Scanners
• Video and Image Digitizers
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5. Digital Audio and Video
 Characteristics of Sound and Digital Audio
• Voice and music
• Digitizing Sound
1. Frame Rate
2. Amplitude Measurement
3. Sound Channels
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6. Calculating Audio Data Size
 C – number of channels
 S – sampling rate
 T – time
 B – bytes
File data size = c*s*t*b
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7. Digital Audio Systems
 Converting the audio signal from a microphone or from
other audio source
 Transferring the digital data
 Digital Audio Software Support
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8. Digital Audio Hardware
Configuration
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9. Digital Audio Systems
 Digital Audio Software Support
 Functions are
 Play back
 Record
 Rewind
 Stop
 Fast Forward
 Reverse
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10. Digital Audio Systems Editing Digital Audio
 Trimming
 Slicing and Assembly
 Volume Adjustments
 Format Conversions
 Resampling or Downsampling
 Equalization
 Time Stretching
 Digital Signal Processing
 Reversing sounds
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11. Digital Audio Systems
 Sound Controls
 Selection of Components
 Volume Level
 Recording Input Level
 Bass and Treble controls
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12.  MIDI
• Musical Instrument and Digital Interface – interchanging information between
synthesizers
 Audio File Formats
• Audio Files
• Apple
• Microsoft
• CD-Audio
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13.  Using Audio in Multimedia Applications
 Background on Video
• Sources of Digital Video
• Types of Analog Video and standards
• Component video
• Digital video
• Computer-based digital video
 Characteristics of Digital Video
• Frame Rate
• Frame Size
• Color Depth or Resolution
• Balancing Characteristics
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14. Interfaced scanning for NTSC
Video Signal
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15. Video Capture Technology
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16. Characteristics of Digital Video
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17.  Digital Video Data Sizing
• Calculating the size of a digital video stream
 F – frame size
 R – frame Rate
 C – Color depth
 T – time in seconds
 Video Capture and Playback System
• Video Source
• Analog to digital converter
• Audio capture circuitry
• Hardware compression chip
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18. Video Capture and Playback
System
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19. Digital Video Playback System via
the computer processor and via
supporting hardware
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20.  Using Graphics in Multimedia Selecting Graphics for multimedia
 Audio Quality
 Audio for Managing software function
 Using audio to enhance other content
 Audio for content delivery
 Backgrounds and Transitions
 Information Delivery
 Navigation
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21. Product and Design
Unit IV – Authoring Tools
 Objectives
 Categories of Authoring Tools
 Selecting the Right Authoring Paradigm
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22.  Objectives
 Multimedia Tool Selection
 Function
 Content
 Hardware
 Software
 Performance
 User Interface
 Database
 Reliability
 Maintenance and Update
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23. Other Elements in Tool
Selection
 Personal Skills
 Cost
 Schedule
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24.  Multimedia Tool Features
 Page
 Controls
 Three general categories
 Navigation
 Input
 Media Controls
 Data
 Text
 Graphics
 Audio
 Video
 Live Audio/Video
 Execution
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25. Multimedia Tool Features
 Linear Sequenced
 Program Controlled
 Temporal Controlled
 Interactively Controlled
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26. Categories of Authoring Tools
 Simple Authoring and Delivery Tool
 Programming Languages for Authoring
 Simple Interactive Authoring Tools
 Complex Interactive Authoring Tools
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27. Simple Authoring and Delivery
Tool
 Word processors
 Graphics software
 Presentation packages
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28.  Selecting the Right Authoring Paradigm
 Internal Expertise Versus Requirement
 Prototyping with different Tools
 Cross Platform Tools and Products
 One strategy for selecting a tool
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