This Dolby system is one of the first surround systems to have been made and deserves to be analysed in detail for the sheer genius with which it was conceived.
When an audio signal is sampled, it gets converted into binary sequences and can therefore be considered a bulk of data that can be stored on an apposite support system (hard disc, CD-ROM, zip disc, jaz).
This is the name given to the towers that are set up at large live events, for the purpose of diffusing the sound over extended distances away from the stage. P.A systems are set up on the towers (in addition to the P.A's present onstage) which consent a virtually uniform sound over very wide surface areas.
Psychoacoustics studies the brain's sound elaboration mechanisms. A knowledge of such mechanisms is indispensable for the practice of sound engineering, in that it allows, through appropriate manipulation, very sophisticated sound-effects to be obtained.