© 2008 Prentice-Hall, Inc.
Slide 21
Chapter 6 Focus on Computer Graphics
You start by creating an outline of the main points of
your talk, arranging headings and points in the appropriate
order.
© 2008 Prentice-Hall, Inc.
Slide 22
Chapter 6 Focus on Computer Graphics
You can design the background, borders, and text format yourself, or select a
professionally-designed template from the collection that comes with PowerPoint.
The program places your text on this template for each slide in the presentation.
© 2008 Prentice-Hall, Inc.
Slide 23
Chapter 6 Focus on Computer Graphics
You can print overhead transparencies or have slides made,
but because there is a big screen computer system in the lecture
room, you opt to create an interactive slideshow with
animated visual transitions between slides.
© 2008 Prentice-Hall, Inc.
Slide 24
Chapter 6 Focus on Computer Graphics
Microsoft Producer lets you combine a presentation with a
video of the speaker and a table of contents.
© 2008 Prentice-Hall, Inc.
Slide 25
Chapter 6
Rules of Thumb: Making Powerful Presentations
Remember your goal. Remember your audience.
Outline your ideas. Be stingy with words.
Keep it simple. Use a consistent design.
Be smart with art. Keep each slide focused.
Tell them what you’re going to tell them, then tell them,
then tell them what you told them.
© 2008 Prentice-Hall, Inc.
Slide 26
Chapter 6
Dynamic Media: Beyond the Printed Page
Modern media contains dynamic information, which is information that changes over time or in response to user input.
Animation Desktop Video
Audio Hypertext and hypermedia
“We’re on the threshold of a moment in cinematic history that is unparalleled.
Anything you can imagine can be done. If you can draw it, if you can describe it,
we can do it. It’s just a matter of cost.” —James Cameron, filmmaker
© 2008 Prentice-Hall, Inc.
Slide 27
Chapter 6
Dynamic Media: Beyond the Printed Page
Animation: Graphics in Time
Each frame of computer-based animation is a computer-drawn picture;
the computer displays these frames in rapid succession.
Tweening: Instead of drawing each frame
by hand, the animator can create key frames and objects and use software to help fill
in the gaps.
© 2008 Prentice-Hall, Inc.
Slide 28
Chapter 6
Dynamic Media: Beyond the Printed Page
Desktop Video: Computers, Film, and TV
Analog and Digital Video
A video digitizer can convert analog video signals from a television broadcast or videotape into digital data.
© 2008 Prentice-Hall, Inc.
Slide 29
Chapter 6
Dynamic Media: Beyond the Printed Page
Many video digitizers can import signals from televisions, videotapes, video cameras, and other sources.
Signals are displayed on the computer’s screen in real time—at
the same time they’re created or imported.
Digital video cameras capture footage in digital form. Digital video can be copied, edited, stored, and played back
without any loss of quality. Digital video will soon replace analog video for most
applications.
© 2008 Prentice-Hall, Inc.
Slide 30
Chapter 6
Dynamic Media: Beyond the Printed Page
Video Production Goes Digital
Today most video editing is done using nonlinear editing
technology.
Video editing software, such as Adobe Premiere, makes it
easy to eliminate extraneous footage, combine clips from multiple takes, splice together scenes, create specific effects
and perform a variety of other activities.
Morphs are video clips in which one image metamorphoses
into another.
Data compression software and hardware are used to
squeeze data out of movies so that they can be stored in smaller spaces.
© 2008 Prentice-Hall, Inc.
Slide 31
Chapter 6
Dynamic Media: Beyond the Printed Page
Many Web sites deliver streaming video content to viewers with fast
broadband Internet connections.
© 2008 Prentice-Hall, Inc.
Slide 32
Dynamic Media: Beyond the Printed Page
The Synthetic Musician: Computers and Audio
Audio digitizer – captures sound and stores it as a data file Synthesizer – an electronic instrument that
synthesizes sounds using mathematical formulas
MIDI Musical Instrument Digital
Interface – standard interface that allows electronic instruments and computers to
communicate with each other
© 2008 Prentice-Hall, Inc.
Slide 33
Chapter 6
Dynamic Media: Beyond the Printed Page
The iTunes Music Store helps Mac and Windows users purchase
music by their favorite artists in protected digital format.
Music is digitized on audio CDs at a high sampling rate and bit depth—high enough that it’s hard to tell the difference between
the original analog sound and the final digital recording.
© 2008 Prentice-Hall, Inc.
Slide 34
Chapter 6
Dynamic Media: Beyond the Printed Page
Rule of Thumb: Digital Audio Dos and Don’ts
Don’t steal. Understand streaming and downloading.
Know your file formats. Don’t over-compress.
© 2008 Prentice-Hall, Inc.
Slide 35
Chapter 6
Dynamic Media: Beyond the Printed Page
Popular Digital Audio Formats
Format Description
WAV, AIFF Standard formats for uncompressed audio for Windows and the Mac OS,
respectively. Both formats are supported on Windows, Mac OS, and Linux. Both create large files. Both are lossless – a CD track encoded with WAV or AIFF
sounds identical to the original.
MP3 A popular format for transmitting audio on the Internet. A CD track converted to
MP3 format can be 110 the size of the original – or smaller – but still sound very similar.
WMA An alternative to MP3 developed by Microsoft for Windows. WMA compression
can result in smaller files of higher fidelity. WMA files may be protected by DRM.
AAC Apple’s alternative to MP3 and WMA is used primarily by iTunes and iTunes
Music Store. AAC compression is sonically superior to MP3 compression. AAC files may be protected by DRM.
OGG Similar to WMA and AAC in sound quality and compression, OGG Vorbis is open
source and freely available – not controlled by any company.
© 2008 Prentice-Hall, Inc.
Slide 36
Chapter 6
Dynamic Media: Beyond the Printed Page
Samplers, Synthesizers, and Sequencers: Digital Audio and MIDI
Multimedia computers can control a variety of electronic musical instruments and sound sources
using MIDI.
MIDI commands can be interpreted by a variety of:
Music synthesizers Samplers
© 2008 Prentice-Hall, Inc.
Slide 37
Chapter 6
Dynamic Media: Beyond the Printed Page
A piano-style keyboard sends MIDI signals to the computer
Computer interprets the MIDI commands using sequencing software
Sequencing software turns a computer into a musical
composing, recording, and editing machine
Electronica—music designed from the ground up with digital
technology
Some of the most interesting sequenced music
© 2008 Prentice-Hall, Inc.
Slide 38
Chapter 6
Dynamic Media: Beyond the Printed Page
A growing number of musicians depend on sequencers to play along
with live musicians in performances
• Ableton’s Live is a sequencer with special features for bridging the
communication gap between human players and computer in
concert.
© 2008 Prentice-Hall, Inc.
Slide 39
Chapter 6
Dynamic Media: Beyond the Printed Page
Hypertext and Hypermedia
Hypertext refers to information linked in non-sequential
ways.
Hypermedia combines text, numbers, graphics,
animation, sound effects, music, and other media in hyperlinked documents.
Useful for on-line help files Lets the user jump between documents all over the Internet
© 2008 Prentice-Hall, Inc.
Slide 40
Chapter 6
Dynamic Media: Beyond the Printed Page
Hypermedia documents can be disorienting and leave readers wondering what they’ve missed.
Documents don’t always have the links readers want. Authors can’t build every possible connection into documents.
Some readers get frustrated because they can’t easily get “here” from
“there.”
© 2008 Prentice-Hall, Inc.
Slide 41
Chapter 6
Dynamic Media: Beyond the Printed Page
Documents sometimes contain “lost” links, especially on the Web, where even a popular page
can disappear. Documents don’t encourage scribbled margin notes,
highlighting, or turned page corners for marking key passages.
Hardware can be hard on humans. The art of hypermedia is still in its infancy.
© 2008 Prentice-Hall, Inc.
Slide 42
Chapter 6 Interactive Multimedia:
Kategori