Chapter 11: Multimedia Application and Production

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Chapter 11 Multimedia Application and Production

• Succeeding with Technology Computer System
  Concepts for Real Life

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Objectives

• Understand the value and use of digital audio in
  a variety of career areas and in your life
• Describe the many uses of 2-D and 3-D digital
  graphics and imaging media
• Discuss how interactive media is used to educate
  and entertain

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Digital Music and Audio

• Digital audio
• Any type of sound recorded and stored digitally
  as a series of 1s and 0s
• Digital music
• Subcategory of digital audio that involves
  recording and storing music
• Digitization of music and audio
• Has created new challenges to the creative and
  intellectual property rights of artists

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The Value of Digital Audio

• Digital music
• Digital sound

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Digital Music and Audio Production Professional
Music Production

• Multitrack recording devices
• Treat each instrument or microphone as a separate
  input, or track
• Synthesizer
• Electronically produces sounds designed to be
  similar to the sounds of real instruments
• Sampler
• Digitally records real musical instrument sounds
  
• Sequencer
• Allows musicians to create multitrack recordings
• Musical instrument digital interface (MIDI)
  protocol
• Implemented in 1983
• Provides a standard language for digital music
  devices to use in communicating with each other
• Integrated digital studios
• Package many digital recording devices in one
  unit for convenient home recording

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Digital Music and Audio Distribution

• Illegal downloading and copying
• Said to have cost music industry 6 billion
  between 1998 and 2003
• Caused a loss of 22 percent of the entire music
  market
• Apples iTunes
• First service to capture attention of music
  downloaders

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Digital Music and Audio Distribution (continued)

• Big four online music services
• iTunes, MSN Music, Napster, and Rhapsody
• Streaming audio
• Internet technology that plays audio files as
  they are being delivered
• Digital rights management (DRM)
• Technology invented to protect intellectual
  property in digital files
• Satellite radio
• Digital radio that uses satellite communications

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Digital Graphics

• Computer-based media applications that support
• Creating, editing, and viewing 2D and 3D images
  and animation
• Not the exclusive domain of artists
• Artistic and nonartistic people
• Are finding themselves called upon or inspired to
  create digital artwork

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Digitizing Graphics

• Pixels
• A grid of small points
• Bit-mapped graphics or raster graphics
• Representing an image using bytes
• Ideal for representing photorealistic images
• Pixilation or fuzziness
• Occurs when bit-mapped images are made larger
  than the size at which they are captured
• Vector graphics
• Use bytes to store geometric descriptions

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Graphics File Formats

• Standards
• Windows bitmap (.bmp)
• Graphics Interchange Format (.gif)
• Joint Photographic Experts Group (.jpg or .jpeg)
• Portable Network Graphics (.png)
• Tagged Image File Format (.tiff or .tif)

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Graphics File Formats (continued)

• Lossless compression
• Allows the original data to be reconstructed
  without loss
• Lossy compression
• Accepts some loss of data to achieve higher rates
  of compression
• File sizes and image quality
• Can be controlled by adjusting the color depth

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Uses of Digital Graphics

• Digital art
• Uses computer software as the brush and the
  computer display as the canvas
• Scientific visualization
• Uses computer graphics to provide visual
  representations that improve our understanding of
  some phenomenon
• Computer-assisted design (CAD) software
• Assists designers, engineers, and architects in
  designing three dimensional objects

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Vector Graphics Software

• Provides tools to create, arrange, and layer
  graphical objects on the screen
• Vector graphics
• Uses object-oriented approach that recognizes
  pictures as being made up of layers of multiple
  objects
• Primary benefit of object-oriented approach of
  vector graphics
• Objects in the picture can be manipulated
  independently

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Three-Dimensional Modeling Software

• 3D modeling software
• Provides graphics tools that allow artists to
  create pictures of realistic 3D models
• Three-dimensional modeling
• Takes the object oriented approach of vector
  graphics to the next level
• Ray tracing
• Three-dimensional modeling

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Computer Animation

• Digital graphics animation
• Involves displaying digital images in rapid
  succession to provide the illusion of motion

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Digital Photography Considerations

• Digital photos , Digital cameras, Memory cards

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Digital Photography (continued)

• Photo-editing software allows you to
• Alter the hue and saturation of the colors in the
  photograph
• Smooth surfaces or remove flaws in surfaces.
• Remove red eye
• Smooth edges and sharpen focus
• Crop and realign photos

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Digital Video

• Is becoming increasingly accessible for personal
  enjoyment as well as professional use
• Used to review the movement of athletes and
  determine how to perfect their abilities
• Used to study pedestrian and traffic patterns
• Forensic graphics
• Used to create animations and exhibits to use in
  courts of law

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Interactive Media

• Digital media presentations that involve user
  interaction for education, training, or
  entertainment
• Typically combines digital audio and digital
  video for a full digital media experience
• Virtual reality
• Occurs when interactive media incorporates 3D
  graphic animation

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Education and Training

• Authorware
• Interactive multimedia is being used in
  traditional classroom setting, distance
  learning, museums, skills-training, etc.

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Interactive TV

• Digital television service that includes one or
  more of the following
• Video on demand, personal video recorder, local
  information on TV, purchase over TV, Internet
  access over TV, video games over TV
• Video On Demand (VoD)
• Personal Video Recorders (PVR)

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3-D Modeling Software

• Provides graphics tools that allow artists to
  realistic models
• 3-D modeling
• Rendering
• 3-D graphics

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Computer Animation

• Digital graphics animation
• Displaying digital images in rapid succession
• Animated GIFs
• Flash
• Provides a timeline tool used to cue movement
  in the animation

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Computer Animation (Cont.)

• 3-D computer animation
• Special Effects

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Summary

• Digital audio
• Includes both digital music and digital sound
• Sound production
• Important part of music, movies, radio,
  television, video games, and the Internet
• Digital technology
• Applied to all aspects of the music industry
• The MIDI (Musical Instrument Digital Interface)
• Implemented in 1983
• Provides a standard language for digital music
  devices

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Summary (Continued)

• Digital graphics
• Media applications
• Used as a form of creative expression
• Photo-editing software
• Editing tools for manipulating digital
  photographs
• Interactive media
• Multimedia presentations