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Analog sound can only be transmitted through
two channels.
Duplex (half/full)
Full duplex is the ability to send and •
receive data simultaneously. Duplex is
synonymous with full duplex. Example:
when a modem operates in full-duplex
mode, it can transmit data in two
directions simultaneously. In half-duplex
mode it can transmit data in two
directions, but not simultaneously.
E
Eco (Eco Standby)
Eco Standby is the most ‘economic’ mode of
the MCi500H and consumes less than 1W. It is
‘economic’ and environmentally friendly to use
this mode during longer times of non-usage of
the MCi500H.
EQ (Equalizer)
A class of electronic lter circuits designed
to augment or adjust electronic or acoustic
systems. Equalizers can be xed or adjustable,
active or passive. Many equalizers divide the
spectrum into 3 to 12 bands. This allows each
section to be either increased or decreased in
amplitude without changing the response of
the rest.
F
Fidelity
A term used to describe the accuracy of
recording, reproduction, or general quality of
audio processing. “High Fidelity” (Hi-Fi) is the
goal of every designer.
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
Coaxial
A single copper conductor, surrounded with
a layer of insulation, covered by a surrounding
copper shield and nally, an insulating jacket.
An unbalanced transmission line with constant
impedance. In audio, this type is commonly
used for low level, line signals terminated in
RCA connectors.
Compression
In audio terms, this is a process of temporarily
or permanently reducing audio data for more
efcient storage or transmission. A temporary
reduction in le size is called ‘non-lossy’
compression, and no information is lost. A
permanent reduction in le size (such as with
MP3 les) is called ‘lossy’ compression, and
involves discarding unnecessary information
which is irretrievably lost.
D
dB (Decibel)
A unit of measure used to express relative
difference in power or intensity of sound.
DC (direct current)
Direct current or continuous current is
the constant ow of electric charge. This is
typically in a conductor such as a wire. In
direct current, the electric charges ow in
the same direction, distinguishing it from AC
(alternating current).
DHCP
DHCP stands for Dynamic Host Conguration
Protocol. It is a protocol for assigning dynamic
IP addresses to devices on a network.
Digital
A method to encode information using a
binary code of 0s and 1s. Many wireless
phones and networks use digital technology.
Digital Audio
Digital Audio is a sound signal that has been
converted into numerical values. Digital sound
can be transmitted through multiple channels.
EN