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Questions and Answers
What is the primary function of a Minidisc recorder?
Digital recording and playback of stereo audio
Which format allows streaming of audio with low bandwidths?
The AIFF format is supported by all web browsers.
False
The __ format is developed by Apple.
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What are the benefits of multimedia?
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Text is a multimedia data element.
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What is the primary difference between raster/bitmap images and vector images?
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Hypertext includes links to other ____.
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Match the following multimedia formats with their primary usage:
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What is the main purpose of puppet animation?
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Silhouette animation involves characters visible as colored figures.
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What are the two primary sound formats mentioned in the lectures?
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Study Notes
Multimedia Characteristics
- Multimedia is the integration of multiple forms of media, such as text, images, audio, and video, to create interactive and engaging experiences.
- Four key characteristics of multimedia:
- Computer-controlled
- Integrated
- Presented digitally
- Interactive
Advantages of Multimedia
- Enhances text-only messages
- Improves traditional audio and video presentations
- Gains and holds attention
- Good for computer-phobics
- Entertaining as well as educational
Multimedia Data Elements
- Text: display of words
- Images: picture of an object
- Movies: outside the scope of traditional multimedia
- Animation: more accurate than movies
- Hyper text: link to other text
- Sounds: include speech, audio effects, ambient sound, and music
Images
- An artifact that reproduces the likeness of some subjects (object or person)
- Composed of pixels
- Two types of computer graphics:
- Raster/bitmap images: composed of pixels, used for photo-realistic images and complex drawings
- Vector images: composed of paths, used for lines and shapes
Graphic File Formats
- Graphic Interchange Format (GIF): supports transparency, limited to 256 colors, used for images with transparent areas, black and white images, and small-size images
- Joint Photographic Experts Group (JPEG): most common file format for images on the web, used for photographs, natural-looking images, and images with a great deal of detail
- Portable Network Graphics (PNG): can display millions of colors, used for images with transparent areas, and images with a great deal of detail
Video
- Capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images that represents scenes in motion
- Streaming media: media that is continuously received and displayed to the end user while it is being delivered by the provider
- File formats:
- Windows Media
- RealMedia
- QuickTime
- MPEG (MPEG-4)
Animation
- A rapid display of a sequence of images or 2D artwork or model positions to create an illusion of movement
- Techniques:
- 2D animation: figures are created and/or edited on the computer using 2D bitmap graphics or created and edited using 2D vector graphics
- 3D animation (cel-shading): creates computer graphics that appear to be hand-drawn
- Stop animation: general term for an animation technique that makes static objects appear to move
- Other techniques: puppet animation, computer animation, full animation, limited animation, rubber hose, drawn on film animation, paint-on-glass animation, clay animation (claymation), cutout animation, silhouette animation, model animation, and special effects and animation
Sounds
- A series of compression waves that moves through air or other materials
- Perception of sounds: perceived through the sense of hearing
- Creating and detecting sounds: creating and detecting sounds have similar effects, but opposite
- File formats:
- Wave format (.wav): supported by all computers running Windows and by all popular web browsers
- MP3 format (.mp3): one of the most popular sound formats for music recording
- MIDI format (.mid or .midi): Musical Instrument Digital Interface, sends music information between electronic music devices, developed in 1982
- Real-Audio format (.rm or .ram): allows streaming of audio with low bandwidths, developed by Real Media
- AU format (.au): supported by many different software systems over a large range of platforms, developed by Apple
- AIFF format (.aiff): not cross-platform and the format is not supported by all web browsers, developed by Apple
- SND format (.snd): not cross-platform and the format is not supported by all web browsers, developed by Apple
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Description
This quiz covers the basics of multimedia, including the different forms of data representation and the principles of effective visual design.
