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Hong Kong University of Science & Technology
Department of Electrical & Electronic Engineering

Fall 2001 ELEC 360: Digital Media & Multimedia Applications Mansun Chan
Name: ________________________ E-mail: ___________________________
Quiz #5B (December 4, 2001)
1. For the left and right eye image given, order the letters in ascending distance from you (that is, list the letter closest to you first)
A, C, B
left eye right eye


A B

C

A
B

C



2. In order to display a window desktop with XGA resolution (1024x768) with 24 bit color, how large is the frame buffer in the video card is required?
Frame buffer size = 1024x768x24 = 18.87Mbit or 2.36MB
Note that the M I used has the meaning of 1 million rather than 220. If you use the Computer Science definition, the answer will be 18Mbit or 2.25MB, which are also correct.
3. Which step in JPEG compression algorithm leads to major degrade in image quality (or data lost)?
Quantization
4. Sometimes people mistaken MP3 as MPEG3. But it is not. So, what actually is MP3?
MPEG audio layer 3
5. In subband coding, each subband will be sampled individually. For a subband with frequency range of 500Hz-1300Hz, what is the minimum sampling frequency so that all signals can be covered?
1600Hz