Gain the ratio of the signal output
from a system to signal input to the system.
GAL® (generic array logic) Registered trademark
of Lattice Semiconductor for their invention of EEPROM-based
low-power programmable logic devices.
Gbps ( Gigabits per second ) A
bandwidth (the amount of data that can flow in a given time).
Gbps is defined as the number of bits per second ( in billions of
bytes ) that can be transmitted over the specified data
transmission medium. See also "giga" and gigabyte below.
GHz (Giga-Hertz per second )
abbreviated GHz, gigahertz is a unit used to measure the frequency
of alternating current (AC)
or an electromagnetic (EM) wave. It is defined as one
Billion (1,000,000,000 Hz) cycles per second.
abbreviated G, A prefix signifying one billion (10E9).
gigabyte A billion
GIGO (garbage in garbage out) Popular
acronym used by programmers to indicate that incorrect information
sent to a system generally results in incorrect information received
granulation noise An audible
distortion resulting from quantization error.
equalizer A multi-band variable equalizer using slide
controls as the amplitude adjustable elements. Named
for the positions of the sliders "graphing" the resulting
frequency response of the equalizer. Only found on active
designs. Center frequency and bandwidth are fixed for each band.
subgroup or submix)
A combination of two or more signal channels gathered together
and treated as a set that can be varied in overall level from
a single control or set of controls. Mixing consoles often provide
a group function mode, where the level of any group of incoming
singles may be adjusted by a single slide fader, which is designated
as the group fader. Likewise in certain signal processing
equipment with splitting and routing capablities,
you will have the ability to group
together, or assign, outputs allowing control of the overall level
by a single external controller.
group delay The rate of change of phase
shift with respect to frequency (mathematically, the first
derivative of phase verses frequency). The rate of change
is just a measure of the slope of the phase shift verses linear
(not log) frequency plot. If this plot is a straight line, it
is said to have a "constant" (i.e., not changing) phase
shift, or a "linear" phase shift characteristic. Hence,
constant group delay, or linear group delay.
GUI (graphical user interface)
A generic name for any computer interface that substitutes
graphics (like buttons, arrows, switches, sliders, etc.) for characters;
usually operated by a mouse or trackball. First mass use was Apple's Macintosh® computers, but is now dominated
by Microsoft's Windows®
gyrator filters Term used to describe
a class of active filters using gyrator networks. Gyrator is the
name given for RC networks that mimic inductors. A gyrator is
a form of artificial inductor where an RC filter synthesizes inductive
characteristics. Used to replace real inductors in filter design.
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