Dolby Surround Sound

Dolby Surround Sound No longer a dominant format, but at one time used for motion picture soundtracks, some music recordings, and some network video programming, it is a 4:2:4 ambiance-extraction and derived-center surround-sound system that delivers three audio channels up front, plus a single surround channel. The latter is usually reproduced through two or more speakers with home-theater playback and with a considerably larger number used for standard movie theater playback. With Dolby…