multimedia part 2 Flashcards
Computer information can be represented through audio, video and animation in addition to traditional media like (graphics) is ?
Multimedia
What is animation ?
Pictures are manipulated to appear as moving
images
Is one of the many still images which compose the complete moving picture ?
Frame
Is the frequency (rate) at which consecutive images called (frames appear on a display ) ?
Frame rate
A 20 second 30fps animation, how many frames?
Usually ( > 24 frames/sec -> standard 30)
Used in television and movies to create effects are made of (CGI) ?
Computer animation
What is the process of Tweening ?
Is generating intermediate frames between two key frames (images)
and
to give the appearance that the first image evolves smoothly into the second image
Is a series of bitmap images when played back it creates the illusion of movement ?
Digital video
which determined by : Frame size : Width x Height (HD) video – 1280 x720
Bit depth and Frames per second (fps)
Data compression ?
Is encoding information using fewer bits than the original representation
Lossless ?
It is original representation can be recovered like ( WinZip, Win Rar)
Lossy ?
Is recover a representation similar to the original one (more practical)
( high compression ratios)
Throw away less relevant parts of the data
(MP3, JPEG )
Using a microphone to capture sound in an analog form (Electric Waves) is ?
Digital Audio
Electric wave is converted into digital data by Audio digitizer (ADC) that has sound like ?
Sampled ( Digitally recorded )
Synthesized ( Generated)
Synthesizer ?
Is an electronic instrument
that synthetically generates, creates, produces
example sounds using mathematical formulas
Which instrument instead of generating sounds It uses recordings (or “samples”) ?
Samplers
Visualizing a Sound Wave ?
By Repetitive oscillations of vibrations
Like Amplitude , Wavelength and Frequency
Digital Sampling ?
An analog audio signal is continuous without
interruption ( stores it as a data file) ADC
A digital audio signal is sampled at regular intervals ( digital data converted to analog wave) DAC
What is Audio Quality ?
It is sampling Rate: Number of samples taken per second (frequency) (Hz)
It is used to represent a sample which measured in bits
and number of channels is ?
The sample size (Bit Depth)
Mono or stereo
Audio Formats ?
WAV ( Uncompressed audio for windows )
MP3 ( 1/10 the size of the original)
WMA ( An alternative to MP3)
AAC ( apple’s alternative to MP3)
OGG Similar to MP3 ( open source and freely available )
Text which contains links to other texts (Information linked in non-sequential ways) ?
Hyper text
It’s not constrained to be text-based, it can include other media ( combines text) ?
Hypermedia
Integration of digital media including electronic text, graphics and sound into a
structured digital computerized is ?
Interactive Multimedia
