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T
Treble
High frequencies at the top end of the audio
band i.e. above 3kHz.
Tweeter
The drive unit (loudspeaker) that reproduces
high
frequency sounds.
U
UPnP (Universal Plug and Play)
Universal Plug and Play is a networking
architecture
developed by a consortium of
companies to ensure easy connectivity between
products from different vendors. UPnP devices
should
be able to connect to a network
automatically, handling identication and other
processes on the y. The standards developed
by the UPnP Forum are media-, platform-, and
device-independent.
V
VBR (variable bit rate)
With VBR, the encoder takes as much bits as
it
needs. So black pictures get few bits and
complex pictures get as much as they need.
While this provides the best quality the nal
siz
e cannot be predicted at all.
VGA
A
common standard graphics display system for
personal computers.
VIDEO OUT socket
Y
ellow socket that sends the DVD picture video
to a TV.
Volume
V
olume is the most common word used to
specify the control of relative loudness of
sounds. It also pertains to the function on many
electronic devices that is used to control the
loudness.
SPL (sound pressure level)
An
acoustic measurement of sound energy.
1 dB SPL is the smallest increment in sound
lev
el to which the average human is sensitive.
Theoretically, 0 dB SPL is the threshold of
human hearing while approximately 120 dB is
the
threshold of pain.
Stereo
Literally means solid. Usually taken to refer to
tw
o channel stereo, though developments in
digital audio facilitate multichannel stereo.
Streaming
A
technique for transferring data such that it
can be processed as a steady and continuous
stream. Streaming technologies are often used
on the Internet because many users do not
have fast enough access to download large
multimedia les quickly, so the client browser or
plug-in
can start displaying the data before the
entire le has been transmitted.
Subwoofer
The
extra-low frequency drive-unit
(loudspeaker) that can be used to augment
both
stereo and surround system.
SuperPlay
SuperPla
y™ is a special feature of the
WAC7500, which enables the listener to play
all the music under a top-level library category,
such as artists or albums, without having to
select playlist items.
SuperScroll
SuperScroll™
is a navigation feature of the
double-action search keys of the WAC7500.
SuperScroll™ allows easy speed control when
scrolling through large libraries to swiftly nd
items
within large libraries. Longer press of the
button results in faster scroll speed.
Surround
A
system that creates realistic, three-
dimensional sound elds. It is usually achieved
with
multiple speakers that are arranged around
the listener.
Glossary
English
EN
wac7500_um_01eng.indd 42 14-08-08 16:30:00