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QUICK
GLOSSARY
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AAC:
MPEG-4 (for Advanced Audio
Coding, a big part of the MPEG-4
specification). Available in
three profiles: Main (high
quality), Low Complexity (LC) and
Scaleable Sampling Rate
(SSR).
Burn ... to place an MP3 file
on a recordable CD that can be
used in an audio CD player.
CD or Compact Disc is a
plastic digital audio disc where
sound is recorded on one side,
starting from the center and
spiraling outward. Sound waves
are sampled over 44,000 times per
second and require about 1.5
million bits to store one second
of stereo hi-fi sound.
Dolby Digital is a digital
audio encoding system for movie
auditoriums and home theaters
that uses coding and compression
technology and provides six audio
channels: front left, front
right, front center, rear left,
rear right, and a subwoofer. See
www.dolby.com.
DTS or Digital Theatre Sound
is a format that is the least
compressed of digital audio
formats and has been defined as
providing better
fidelity.
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HDCD
is High Definition Compatible
Digital a digital processing
technique that improves fidelity
on audio CDs. See
www.hdcd.com.
MP3
is an audio compression
method that compresses CD-quality
sound by 12 times for easy
storage on computer hard disks
and digital lifestyle devices.
The sound fidelity is almost as
good as the original CD. See
www.mp3.com.
RIP ... to convert a CD
quality sound or song to an MP3
file. Also known as encoding.
THX is a design system for
movie and home theater
environments. THX comes from
Tomlinson Homan
Experiment, the eponym
being the man who defined the
criteria of theater acoustics.
See www.thx.com.
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*
Monday through Thursday Harper
College's radio station, WHCM.
Friday through Sunday, the 88.3
FM radio frequency belongs to the
Church of Christian Liberty &
Academy.
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