89
En
Glossary
A
DDITIONA
L
INF
O
R
M
A
T
IO
N
English
■
LFE 0.1-channel
This channel is for the reproduction of low bass signals.
The frequency range for this channel is 20 Hz to 120 Hz.
This channel is counted as 0.1 because it only enforces a
low-frequency range compared to the full-range
reproduction by the other 5/6 channels in Dolby Digital or
DTS 5.1/6.1-channel systems.
■
PCM (Linear PCM)
Linear PCM is a signal format under which an analog
audio signal is digitized, recorded, and transmitted
without using any compression. This is used as a method
of recording CDs and DVD audio. The PCM system uses
a technique for sampling the size of the analog signal per
very small unit of time. Standing for pulse code
modulation, the analog signal is encoded as pulses and
then modulated for recording.
■
SRS TruBass
SRS TruBass is a psychoacoustic bass enhancement
technology developed by SRS Labs, Inc. for speakers and
headphone systems that delivers bass up to an octave
below the physical capabilities of the speaker’s driver.
SRS TruBass technology takes advantage of a
spontaneous tendency of the human ears to infer low-
range audio data when presented with higher-frequency
harmonic signals. As a result, our ears can hear the
original low-range sound that the speaker system is
incapable of producing.
