AV Stumpfl SC MASTER LITE, Руководство пользователя, Страница: 31 / 117

SC MASTER LITE Producing a Show Medium
•
23
Producing a Show Medium
General
Once you have finished programming your show, you continue
by creating the presentation medium, which allows you to
present your show even without computer.
Unbelievable, but true! MP3 audio data compression
Strictly speaking this compression technology developed by
the Fraunhofer Institute is called MPEG 1 Layer 3. In the
meantime, however, it's only called MP3 for short among
experts. That's what we do, too.
But more important is what there is to it: It is hardly conceiv-
able that a reduction of audio data by up to 90% does not
result in an audible loss of quality. This compression technol-
ogy is based on psychoacoustics, i.e. perception of sound by
people. In long series of scientific tests it has been found out
what a person can actually hear, what is essential for hearing.
And this is exactly what MP3 compression is about. All other,
unimportant signals clearly fall victim to the compression!
However, the result is really worth hearing. Only trained ears
will be able to notice the differences between the compressed
music and the original one, although this also depends on the
type of music. The compression of solo instruments is more