test 3 review Flashcards
1
Q
digital
A
discrete values
ex CD/DVD
advantage lower cost/ less noise
2
Q
analog
A
continuous values
ex human voice in air / LP record
advantage - less bandwidth / greater accuracy
3
Q
wagon wheel aliasing
A
ex car tires
if your eyes don’t “sample” enough per cycle the wheels appear to be going backwards
4
Q
2 types of aliasing for image files
A
- moire patterns
- when two patterns interact an unusual pattern is formed - jaggies
-diagonal lines appear jagged like a staircase
5
Q
2 types of aliasing for audio samples
A
- less than 2x per cycle
- wave may have no sound/ lower frequency
6
Q
dithering
A
creates an illusion of color depth in an image with a limited color palette
7
Q
frequency relates to
A
pitch
8
Q
amplitude relates to
A
volume
9
Q
advantages of a lower color depth
A
leas bits/ faster to process
