28
Notes on MP3/WMA
Display Information
Displayable characters
¡
Displayable length of file name/folder name: within
30 characters. (Unicoded file and folder names are
reduced by half in the number of displayable char-
acters.)
¡
Name files and folders in accordance with the
standard of each file system. Refer to the instruc-
tions of writing software for details.
¡
ASCII character set and special characters in each
language can be displayed.
ASCII character set
A to Z, a to z, digits 0 to 9, and the following
symbols:
(space) ! ” # $ % & ’ ( ) * + , - . / : ; < = > ? @ [ \ ] ˆ
_ ` { | } ~
Notes
:
¡
Characters may be garbled depending on encoding
software to be used
¡
Undisplayable characters and symbols will be con-
verted into an asterisk (
*
).
Common
¡
High bit rate and high sampling frequency are rec-
ommended for high quality sounds.
¡
Selecting VBR (Variable Bit Rate) is not recom-
mended 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 user manual of your own encoding software
and writing software.
¡
Be sure to put an extension compatible with the
format.
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 protect attribute on the WMA
file to enable this unit to play back.
Caution
Never put an extension indicating compressed audio (such as “.mp3” and “.wma”) to
files other than compressed audio files. This may not only produce noise from the
speaker damage, but also damage your hearing.
Cautions as to compressed audio files
Both of MP3 (MPEG Audio Layer-3) and WMA (Windows Media™ Audio) is a format for compressed audio
file. These formats allow users to save all the files contained in approximately 10 pieces of existing CDs on
one piece of CD-R/RW.
Note
: Each of encoding software is not included with this unit.
*MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson.
Compression method
Bit rate
VBR
Sampling frequency
MPEG 1 audio layer 3 (MP3)
32 k – 320 kbps
Yes
32, 44.1, 48 kHz
MPEG 2 audio layer 3 (MP3)
8 k – 160 kbps
Yes
16, 22.05, 24 kHz
MPEG 2.5 audio layer 3 (MP3)
8 k – 160 kbps
Yes
8, 11.025, 12 kHz
Windows Media Audio Ver. 2, 7, 8, 9*
64 k – 160 kbps
Yes
32, 44.1, 48 kHz
Compression formats
* WMA 9 Professional/LossLess/Voice are not supported.
Cautions as to the display of this unit
¡
CD-TEXT
Disc title
Track title
¡
MP3/WMA
Folder name,
File name
¡
MP3 (ID3 tag)
Album name,
Title name/artist name
¡
WMA (WMA tag)
Album name,
Title name/artist name
CQ̲5256Uv 10/12/15 13:25
ページ
28
