Supported disc types17
Supported disc types
What are MP3/WMA/AAC?
MP3 is an abbreviation of “MPEG-1 Audio
Layer 3”. MPEG is an abbreviation of
“Motion Pictures Experts Group”, which is
a standard for compressing digital video
data for use in media such as video CDs.
MP3 is one of the audio compression
schemes covered by the MPEG digital
audio compression standards. MP3 com-
pression reduces the number of bytes in
a song by eliminating large sound waves
within the sound range that is impercep-
tible to the human ear, producing high
quality audio fi les with a low volume of
data. MP3 compression allows for the
contents of a conventional music CD to
be reduced by a factor of about 10. This
means that the contents of 10 music CDs
can be recorded on a single CR-R or CD-
RW.
WMA is an abbreviation of Windows Me-
dia Audio, which is another audio com-
pression standard.
WMA can be used to create and save au-
dio fi les at a higher compression rate than
with MP3.Microsoft, Windows Media, and Microsoft Corporation are regis-
tered trademarks in the United States and/or other countries.
· AAC is an abbreviation of Advanced Audio Coding, which is a compressed audio format in which the
video compression standards MPEG-2 and MPEG-
4 are used. The compression rate is about 1.4 times
that of MP3 and maintains almost the same sound
quality.
NOTE
· WMA and AAC support Digital Rights Management
(DRM).This audio system cannot play WMA or AAC
fi les, which are protected under DRM.
Glossary
56
Glossary
Term
Meaning
VBR (Variable Bit Rate):
The bit rate varies according to the rate of
compression. CBR (Constant Bit Rate) is a format
that sets a fi xed bit rate. The bit rate varies according
to the rate of compression, so players that do not
support VBR cannot play VBR compressed fi les.
WMA:
Abbreviation for Windows Media Audio. An audio
compression technology developed by Microsoft
Corporation.
WMA-Tag:
Information such as the title or artist name that is
recorded in a WMA fi le
Language code:
Code for the language set when viewing DVD video.
Sampling frequency:
Frequency at which sampling (analog samples
digitized at fi xed intervals) is done to convert analog
audio signals to digital audio signals.
Bit rate:
Value that expresses rate per second of signal
transfer in bits.
Multisession:
Recording on several different occasions when
recording onto CD-R.
Region number:
There are 6 region numbers (as well as individual
country codes) for DVD videos. Region numbers for
the disc and the player must match in order to play
the disc.
Term Meaning
AAC:
AAC is an abbreviation of Advanced Audio Coding,
which is a compressed audio format in which the video
compression standards MPEG-2 and MPEG-4 are used.
Aspect ratio:
the width to height ratio of a screen or image.
BONUS (bonus track):
Special additional track included on a DVD audio or
other media
CD-DA:
Music CD
CD-R:
Recordable CD media. Data can be recorded once
and cannot be rerecorded or erased.
CD-RW:
Recordable CD media. Data can be recorded,
rerecorded, and erased.
CD-TEXT:
Function that records text such as album, song, and
artist names onto music CDs.
Country Code:
Region code set when watching DVD video.
CURSOR:
Mark used to select items in sequence on the screen.
In the system CURSOR menu, items that can be set
change color.
DVD-VR (DVD Video Recording Format):
DVD writing formats such as DVD-R and DVD-RW
(video recording formats primarily for household use)
ID3-Tag:
Information such as the title or artist name that is
recorded in an MP3 fi le.
Term
Meaning
MP3:
Abbreviation for MPEG1 Audio Layer 3.
MPEG:
An audio data compression standard.
Abbreviation for Moving Picture Coding Experts
Group, a video compression standard.
NTSC:
Abbreviation for National Television Standards
Committee.
PAL:
Phase Alternating Line.
PBC (Playback control):
A video CD playback format, in which numbers can
be entered and the desired track may be selected on
the displayed screen.
PLAY LIST:
A list including the desired playback order and the
like. Made in advance when creating MP3/WMA/AAC
fi les.
Rating:
Depending on the DVD video, ratings such as age
restrictions may be set for certain content.
SOURCE:
Type of music or video. System source selections
include DISC and VIDEO (auxiliary input).
Titles:
First, DVD videos are set off by titles. Each title is
divided into chapters.
Chapter:
Numbers assigned to titles are called title numbers,
and numbers assigned to chapters are called chapter
numbers.
