SURROUND EX

[ Integrated circuits; audio/video amplifiers and receivers; audio and video disc players; ] a feature of prerecorded video discs and DVD video discs used to digitally process and enhance the recording and play back of audio sound, sound effects and soundtracks [ ; cinema sound processors for motion picture soundtracks; multi-channel sound processors; surround adapter units for use in movie theaters; computer programs having sound generating capabilities, namely, software for processing audio and video sound signal ]