Study Questions

Study Questions - CR

What are the common approaches to representing: sound? images? video?

What important characteristics of human sensory perception relate to digital multimedia information? Why must one try out each new approach to handling digital multimedia information with humans as well as hardware/software developers?

Why should one transform between time and frequency domains when dealing with digital multimedia?

What are some important color spaces used in TV?

What are the differences between NTSC, PAL, SECAM, HDTV?

What are some of the common artifacts seen on TV and what causes them?

Explain: raster scanning, aspect ratio, resolution, frame rates, LCD sensors, RGB, YIQ, YUV, gamma, S/N ratio in dB, SMPTE.

Explain: RAID, Continuous Media File System, Continuous Media Storage System, Petri nets, HyTime, Amsterdam Hypermedia Model.

How do buffering and disk scheduling help smooth out playback of multimedia streams?

Explain and compare: QuickTime (QMF), Object Media Framework (OMFI), MHEG.

Explain the respective advantages and disadvantages of the track and object models of multimedia information.

How can file formats support high performance real-time multimedia services? How can one measure and compare the performance of different approaches?

What are the advantages of: sequential storage, interleaving, progressive access, separate storage of object description and content?