5.1, on the other hand, besides having two additional channels (the ".1" aka "LFE" (Low Frequency Effects) aka "subwoofer" channel and
the stereo surround channels rather than the single mono surround in Pro-Logic), has its channels encoded individually and multiplexed
into a digital stream, albeit with fairly aggressive perceptual-based lossy compression.
Which all means that neither encoding process is simply a matter of saying, "this sound goes here and it should
sound like this"; there's a great deal more art to the process of making the result sound natural to the viewer
and to making sure it sounds right when played back through a non-Dolby stereo system, a low-end TV set, and a
high-end surround sound home theater system.