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Incredible Surround Sound (Incr.Surr.)
An improved system that creates realistic, three-
dimensional sound elds. These sound elds are
usually achieved with multiple speakers that are
arranged around the listener.
Input sensitivity
SPL (sound pressure level) a speaker produces,
given one watt of power, measured from a
one-meter distance at a typical input frequency
(usually 1kHz unless otherwise noted on the
speaker).
Interface
A device or protocol which facilitates the linking
of any two devices or systems; or when used as
a verb (‘to interface’), the process of linking.
IP address
An IP (Internet Protocol) address is a unique
computer address that enables electronic
devices to communicate with and identify each
other.
K
Kbps
Kilobits per second. A digital-data-rate
measurement system which is often used with
highly compressed formats such as AAC, DAB,
MP3 etc. The higher the amount, the better the
quality generally is.
K
kHz (kilo Hertz)
1000Hz or 1000 cycles per second.
L
LCD (Liquid Crystal Display)
Probably the most common way to show
visual information on non-computer electronic
equipment.
FM (Frequency Modulation)
In radio broadcasting: a method of modulation
in which the frequency of the carrier voltage
is varied with the frequency of the modulation
voltage.
Frequency
The property or condition of occurring at
frequent intervals. In sound, this simply refers
to the regular occurrence of compression and
rarication of air that we experience as sound.
Frequency Response
Is the range of frequencies that a speaker
reproduces, lowest frequency to the highest.
While the optimal normal is 20-20,000 Hz
(Hertz), the range of human hearing for
individuals is often much more restricted.
A good full-range speaker system however,
reproduces as much of this range as possible to
cover all variations. Individual drivers are limited
to reproduce only that part of the spectrum
for which they were made, so their response is
limited, but still a necessary point to consider
when designing a complete sound system.
H
Hi-Fi (High Fidelity)
A method of sound reproduction that
emphasizes the highest possible adherence to
the exact character of the original sound. This
is a principal that must be paramount in every
stage of the recording, transportation, and
recreation of the signal to be fully operational. It
is usually the listener’s equipment wherein this
objective is most seriously compromised.
Hz (Hertz)
Cycles per second, named after Heinrich Hertz.
I
Impedance
The resistance to the ow of an electric current
in a circuit. This is effectively the electrical load
that a loudspeaker presents to the amplier
which drives it and is measured in ohms.
EN