7
USB MP3/WMA Overview
Note on MP3
• MP3 is short for MPEG Audio Layer 3
and refers to an audio compression
technology standard.
• This product allows playback of MP3 files
on CD-ROM, CD-R or CD-RW discs.
• The unit can read MP3 files written in the
format compliant with ISO 9660.
However it does not support the MP3 data
written by the method of packet write.
• The unit can not read an MP3 file that has
a file extension other than ".mp3".
• If you play a non-MP3 file that has the
“
.
mp3" extension, you may hear some
noise.
• In this manual, we refer to what are called
"MP3 file" and "folder " in PC terminology
as "track" and "Album," respectively.
• Maximum number of directory level is 8,
including the root directory. Maximum
number of files and folders per disc is 256.
• The unit may not play tracks in the order
of Track numbers.
• The unit plays only the audio tracks if a
disc contains both audio tracks and MP3
files.
• When playing a disc of 8kbps or VBR*, the
elapsed playing time in the display window
will not be correct and also the intro play
may not function properly. *VBR: Variable
Bit Rate
Note on creating your own CD-Rs or
CD-RWs containing MP3 files
• T o e n j o y h i g h q u a l i t y s o u n d , w e
recommend converting to MP3 files with
a sampling frequency of 44.1 kHz and a
fixed bit rate of 128 kbps.
• DO NOT store more than 256 MP3 files
per disc.
• For ISO 9660 -compliant format, the
maximum allowable depth of nested
folders is 8, including the root directory
(folder).
• When CD-R disc is used, playback is
possible only for discs which have been
finalized.
• Make sure that when MP3 CD-R or CD-
RW is burned that it is formatted as a data
disc and NOT as an audio disc.
• You should not write non-MP3 files or
unneeded folders along with MP3 files on
the disc otherwise it takes a long time until
the unit starts to play MP3 files.
• With some CD-R or CD-RW media, data
may not be properly written depending on
their manufacturing quality.
In this case, data may not be reproduced
correctly. High quality CD-R or CD-RW disc is
recommended.
• Up to 16 characters are displayed for the
name of an Album or a Track. ID3 TAG
version 1.x is required.
• Note that the unit may not play Track in
the order that you wrote them to the disc.
USB Notes
USB functions (flash memory type) MP3 music
play.
(1) USB flash memory 2 in 1 support
(2)
FAT 12/FAT 16/FAT 32 format supported.
(3) File name: 64 byte/dir name: 64 byte/tag
name: 30 byte.
(4) Tag (id3 tag ver 2.0)
- title/artist/album: 32 byte support.
(5) USB 1.1 support, USB 2.0 support (For 2.0,
speed performance is as USB 1.1)
(6) Not all USB devices are compatible with
the unit.
(7)
USB connector is support maximum
work power with 500mA.
CDD7428UB-OR 9682CMB4491QB339A.indd 7
2014-9-5 15:06:26
