A-law Algorithm
An
a-law algorithm
is a
standard
companding algorithm, used in
European
digital
communications
systems to optimize,
i.e.,
modify, the
dynamic range
of an
analog signal
for digitizing. It is similar to the
mu-law algorithm
used in
North America
and
Japan
. The reason for this encoding is that the wide
dynamic range
of
speech
does not lend itself well to efficient linear digital encoding. A-law encoding effectively reduces the dynamic range of the signal, thereby increasing the
coding
efficiency and resulting in a signal-to-
distortion
ratio that is superior to that obtained by linear encoding for a given number of bits.
See also
Mu-law algorithm
Audio level compression
Signal compression
Companding
G.711
<< Previous
Word Browser
Next >>
absolute gain
access
access charge
access control
access denial
access failure
access time
baud
acknowledgement
acoustic coupler
acquisition
active laser medium
adaptive communications
adaptive predictive coding
adder subtracter
address
addressability
address message
adjacent channel interference
advanced data communication control procedures
aerial insert
aeronautical emergency communications system plan
aiod leads
airborne radio relay
air ground worldwide communications system
alarm sensor
allan variance
alphanumeric
alternate party
ambient noise level
amplitude distortion
analog decoding
angular misalignment loss
antenna blind cone
antenna effective area
antenna height above average terrain
antenna noise temperature
aperture to medium coupling loss
apparent power
area broadcast shift
arithmetic overflow
arithmetic shift
arq
articulation score
Copyright 2005-2009 OnPedia.com. All Rights Reserved