18 EN
13 Glossary

D

Decibel (dB)
A unit of measure used to exp ress relative
difference in power or inte nsity of sound.

F

FM (Frequency Modulation)
In radio broadcas ting: a method of modulatio n
in which the frequenc y of the carrier volta ge
is varied with the fre quency of the modulatio n
voltage.

L

LCD (Liquid Crystal Displ ay)
Probably the most common w ay to show
visual information on non -computer elect ronic
equipment.

M

MP3
A le format with a sound da ta compression
system. MP3 is the abb reviation of Motion
Picture Exper ts Group 1 (or MPEG-1) Audio
Layer 3. With the MP3 for mat, one CD-R or
CD-RW can contain abou t 10 times more
data than a regular CD.

S

Shufe
A feature that plays audio le s (tracks) in
random order.

V

Volume
Volume is the most common word use d to
specify the control of re lative loudness of
sounds. It also per tains to the function o n
many electronic device s that is used to control
the loudness.

W

WMA (Windows Media Audio)
An audio format owned by Micr osoft, is a
part of Microsoft W indows Media technology.
Includes Microsoft Di gital Rights Manage ment
tools, Windows Media Vid eo encoding
technology, and Windows Med ia Audio
encoding technology.