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VAS
- The volume
of air that offers the same degree of restoring force on
the loudspeaker driver's cone as that of the cone's
suspension
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VCD
- VCD stands
for Video CD. Developed in the early 90's by JVC,
Matsushita, Phlips, and Sony, VCDs, although having
limited success in the U.S., became popular, mostly in
Asia, for the playback of video content. Employing a
compression system known as MPEG1, 74 minutes of audio
and video can be stored on a standard CD at a 352x240
pixel resolution in NTSC or 352x288 PAL, which is
somewhat comparable to standard VHS. Special VCD
players and many DVD players do have the ability to play
back VCDs, and almost all PCs have the ability for the
user to record their own VCDs. Keep in mind, however,
that even though that VCD content is stored on a CD,
standard CD players cannot play them back as they have
no way to read or output video content. A variation of
VCD is known as SVCD, which stands for Super Video CD.
The difference between an SVCD and a VCD is that SVCDs
have a higher resolution, so only 35 minutes can be
stored on a standard CD that can normally hold 74
minutes of CD or VCD content. As with VCDs, many DVD
players can also play back SVCDs.
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Vertical
Resolution -
The number of horizontal lines in your video monitor's
picture is vertical resolution. Horizontal and vertical
resolutions are named counter intuitively, horizontal
resolution is the number of vertical lines in the
picture and vertical resolution is the number of
horizontal lines in the picture.
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Voice
Coil - A part
found in a conventional loudspeaker. The coil and
magnet work together to drive a diaphragm that pushes
air into the front of the loudspeaker.
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Voice-matched
-
Speakers that are "voice-matched" have the same timbre
or tonal quality. Voice-matched speakers in a home
theater system will result in a convincingly seamless
encompassing sound.
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Volt
- The unit of electrical potential, or difference in
electrical pressure, expressing the difference between
two electrical charges. |
