Question

5. For the following, assume that no data compression is done, although in practice this would almost never be the case. For (a) to (c), calculate the bandwidth necessary for transmitting in real time:

(a) Video at a resolution of 640 × 480, 3 bytes/pixel, 30 frames/second.

(b) Video at a resolution of 160 × 120, 1 byte/pixel, 5 frames/second.

(c) CD-ROM music, assuming one CD holds 75 minutes’ worth and takes 650 MB.

(d) Assume a fax transmits an 8 × 10-inch black-and-white image at a resolution of 72 pixels per inch. How long would this take over a 14.4-Kbps modem?

Answer 1

mes SEC bond wid6x 480x 24x 3 0 Explanatonresolufion o vckos olwoys s Pcsfromewhich means n each Om İma2- ot 640 480 ·PXel Sford is 3 byks i pixel than Video runs at 30 fra mes/second s-e n each Second L 3o inl laa ndwid

75 mi ICD holds s 65o m b an d memo trick band widfh -bssec 650 mb emembes - 72 72 Pizcals per inch L image 5184 0 Onche s 720 6i1shas Ibils ond wi dth 28,8 econds