Data Compression III

6.Why is human psychology and perception an important factor in methods of Lossy compression?

7.Name Lossy file formats for audio, still image and video format.

Audio:
AAC - .mp4 .m4a .3gp
ATRAC - .oma .aa3
MP3 - .mp3
MPEG-1 - .mp2
Musepack - .mpc .mpp
WMA - .wma


Still Image:
CPC - .cpc
DjVu - .djvu .djv
JPEG - .jpg .jpeg


Video:
DV - .dv .dif
MNG - .mng
MPEG-1 - .mpg .mpeg .mp2 .mp3 .mpa
MPEG-2 - .mpg .mpeg .mp2 .mp3 .m2v
Ogg Theora - .ogv