《A Really Friendly Guide to Wavelets》课程教学资源（书籍文献）Multimedia Systems

CSE 228-F: Multimedia Systems Mid-term Examination 30 points, 90 minutes Instructions: Answer all of the following questions(total 30 points, 90 minutes).It is a closed book exam. Use your own blue book. No unstapled sheets of paper 1.(5 points, 15 minutes) Compute the total number of frames and pixels in an hour of NTSC Video 2.(5 points, 15 minutes) Differentiate clearly between PCM, DPCM, and ADPCM. What media are these most frequently used for? 3.(10 points, 30 minutes) Draw the block diagram of a JPEG encoder. Explain all of the stages at the conceptual level- what is the input, what is the output, and what action that stage of the encoder accomplishes 4.(5 points, 15 minutes) Is JPEG lossy? Give at least two reasons 5. 5 points, 15 minutes) In MPEG, if we were to just send differences between successive frames (after sending the first frame), what are the disadvantages? Give at least two

CSE 228-F: Multimedia Systems Mid-term Examination (30 points, 90 minutes) Instructions: Answer all of the following questions (total 30 points, 90 minutes). It is a closed book exam. Use your own blue book. No unstapled sheets of paper. 1. (5 points, 15 minutes) Compute the total number of frames and pixels in an hour of NTSC video. 2. (5 points, 15 minutes) Differentiate clearly between PCM, DPCM, and ADPCM. What media are these most frequently used for? 3. (10 points, 30 minutes) Draw the block diagram of a JPEG encoder. Explain all of the stages at the conceptual level - what is the input, what is the output, and what action that stage of the encoder accomplishes. 4. (5 points, 15 minutes) Is JPEG lossy? Give at least two reasons. 5. (5 points, 15 minutes) In MPEG, if we were to just send differences between successive frames (after sending the first frame), what are the disadvantages? Give at least two