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ADDITIONAL INFORMATION
About MP3 files
MP3 (MPEG 1 Audio Layer-3) is a standard
technology and format for compressing a sound
sequence. The file is compressed to about 1/10 of
its original size. Sounds outside the range of
human hearing are compressed while the sounds
we can hear are not compressed.
Notes on discs
You can play MP3 files recorded on CD-ROMs,
CD-Rs, and CD-RWs.
The disc must be in the ISO 9660
format, or Joliet or Romeo in the expansion format.
You can use a disc recorded in Multi Session
*1
ISO 9660 Format
The most common international standard for the
logical format of files and folders on a CD-ROM.
There are several specification levels. In Level 1,
file names must be in the 8.3 format (no more
than 8 characters in the name, no more than 3
characters in the extension ".MP3") and in capital
letters. Folder names can be no longer than 8
characters. There can be no more than 8 nested
folder levels. Level 2 specifications allow file
names up to 31 characters long.
Each folder can have up to 8 trees.
For Joliet or Romeo in the expansion format,
make sure of the contents of the writing software,
etc.
*2
Multi Session
This is a recording method that enables adding of
data using the Track-At-Once method.
Conventional CDs begin at a CD control area
called the Lead-in and end at an area called
Lead-out. A Multi Session CD is a CD having
multiple sessions, with each segment from Lead-
in to Lead-out regarded as a single session.
CD-Extra: The format which records audio
(audio CD data) as tracks on session 1, and
records data as tracks on session 2.
Mixed CD: In this format, data is recorded as
track 1, and audio (audio CD data) is recorded as
track 2.
16
*1
level 1 or level 2
*2
.
Notes
• With formats other than ISO 9660 level 1 and
level 2, folder names or file names may not be
displayed correctly.
• When naming, be sure to add the file extension
".MP3" to the file name.
• If you put the extension ".MP3" to a file other
than MP3, the unit cannot recognize the file
properly and will generate random noise that
could damage your speakers.
• The following discs take a longer time to start
playback.
– a disc recorded with complicated tree structure.
– a disc recorded in Multi Session.
– a disc to which data can be added.
Cautions when playing a disc that is recorded in
Multi Session
• When the first track of the first session is audio
CD data:
Only audio CD data of the first session is played
back.
Any data in subsequent sessions is skipped.
• When the first track of the first session is not
audio CD data:
– If an MP3 file is in the disc, only MP3 file(s)
play back and other data is skipped. (Audio CD
data is not recognized.)
– If no MP3 file is in the disc, "NO MUSIC" is
displayed and nothing is played back. (Audio
CD data is not recognized.)
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