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as electromagnetic waves by radio (and
television) stations.
Rip(ripping)
Using a software program that “grabs” digital
audio from a compact disc and transfers it to a
computer hard drive. The integrity of the data
is preserved, because the signal does not pass
through the computer sound card, and need
not be converted to an analog format. The
digital-to-digital transfer creates a WAV le that
can then be converted into an MP3 le.
RMS(RootMeanSquare)
A formula that provides a reasonably accurate
means to measure and compare continuous
AC power. The use of this measure is preferred
when matching system components, like
ampliers and receivers.
S
S/PDIF(SPDIF)(Sony/PhilipsDigitalInterface)
A standard audio-le transfer-format that was
developed jointly by Sony and Philips. S/PDIF
allows the transfer of digital audio signals from
one device to another, without the need to
convert rst to analog. This prevents the quality
of the digital signal degrading during transfer to
analog.
Sampling rate
The precision with which a digital le describes
the analog sound it represents. Basically, a lower
rate produces les that sound worse and take
up less drive space than those with a higher
rate. CDs have a sampling rate of 44.1kHz,
and DAT machines have a sampling rate of
48kHz. MiniDisc player/recorders with a built-in
sampling rate converter can handle both rates.
Sensitivity
Volume that a speaker offers for a specic
voltage input, expressed in decibels per watt
(dB/W).
Shufe
A feature that plays audio les (tracks) in
random order.
MP3
A le format with a sound data compression
system. MP3 is the abbreviation of Motion
Picture Experts Group 1 (or MPEG-1) Audio
Layer 3. With the MP3 format, one CD-R or
CD-RW can contain about 10 times more data
than a regular CD.
Mute
A control found on receivers, and some mixers
or signal processing units that silences (mutes) a
signal path, or output.
O
Ohm
Measure of resistance to current (impedance).
The lower the impedance of a speaker, the
harder it is to drive.
P
PCM(PulseCodeModulation)
Pioneering form of digital recording.
R
RDS(RadioDataSystem)
RDS tuners can automatically tune in stations
according to the types of music (or talk) they
broadcast. RDS also enables a receiver to
display text messages and even graphics (usually
call letters and format information) that many
FM stations include on a sub-carrier signal
within their normal broadcast signal. Some RDS
equipped tuners can even override with trafc
alerts or emergency broadcasts, during playback
of other media - CD MD, or cassette. There are
other useful features too, many of which are
offered by the growing number of RDS stations.
RF(radiofrequency)
An alternating current or voltage with a
frequency (or carrier wave) above about
100kHz. It is called radio frequency because
these frequencies have a capacity to be radiated
Glossary
English
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was6050_ifu_01en_04de_03es_02fr_37 37 2008-02-14 12:40:44 PM