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Notes on MP3/WMA
What is MP3/WMA?
MP3* (MPEG Audio Layer-3) and WMA (Windows Media
TM
Audio) are the compression formats of digital audio. The former
is developed by MPEG (Motion Picture Experts Group), and the
latter is developed by Microsoft Corporation. Using these
compression formats, you can record the contents of about 10
music CDs on a single CD (This figure refers to data recorded on
a 650 MB CD-R or CD-RW at a fixed bit rate of 128 kbps and a
sampling frequency of 44.1 kHz).
*MPEG Layer-3 audio coding technology licensed from
Fraunhofer IIS and Thomson.
Note:
¡
MP3/WMA encoding and CD writing software programs are
not supplied with this unit.
Points to remember when making MP3/WMA files
Common
¡
High bit rate and high sampling frequency are recommended
for high quality sound.
¡
Selecting VBR (Variable Bit Rate) is not recommended
because playing time is not displayed properly and sound
may be skipped.
¡
The playback sound quality differs depending on the encoding
circumstances. For details, refer to the instructions of your
own encoding software and writing software.
MP3
¡
It is recommended to set the bit rate to “128 kbps or more”
and “fixed”.
WMA
¡
It is recommended to set the bit rate to “64 kbps or more”
and “fixed”.
¡
Do not set the copy protection on the WMA file to enable this
unit to play back.
Display Information
Displayed items
Displayable characters
¡
Displayable length of file name/folder name: within 64 charac-
ters. (Unicoded file and folder names are reduced by half in
the number of displayable characters.)
¡
Name files and folders in accordance with the standard of
each file system. Refer to the instructions of writing software
for details.
¡
ASCII character set and special characters in each language
can be displayed.
¡
Some Cyrillic characters in the Unicode can be displayed.
ASCII character set
A to Z, a to z, digits 0 to 9, and the following symbols:
(space) ! ” # $ % & ’ ( ) * + , - . / : ; < = > ? @ [ \ ] ˆ _ ` { | }
~
Special characters
À Á Â Ã Å à á â ã å
Ä ä
Ò Ó Ô Õ Ö ò ó ô õ ö
Ù Ú Û Ü ù ú û ü
Note:
¡
With some software in which MP3/WMA format files have
been encoded, the character information may not be dis-
played properly.
¡
Undisplayable characters and symbols will be converted into
an asterisk (
).
¡
It is recommended that the length of the file name is less than
8 (excluding the file extension).
¡
CD-TEXT
Disc title
Track title
¡
MP3/WMA
Folder name
File name
¡
MP3 (ID3 tag)
Album name
Title and artist name
¡
WMA (WMA tag)
Album name
Title and artist name
Caution
¡
Never assign the “.mp3”, or “.wma” file
name extension to a file that is not in the
MP3/WMA format. This may not only pro-
duce noise from the speaker damage, but
also damage your hearing.
Windows Media, and the
Windows logo are trademarks,
or registered trademarks of
Microsoft Corporation in the
United States and/or other
countries/regions.
