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Playing Back MP3 Discs on 3-CD Changer
About MP3
MP3 is an abbreviation of Motion Picture Experts Group (or
MPEG) Audio Layer 3. MP3 is simply a file format with a data
compression ratio of 1:10 (128 kbps*). That means, by using
MP3 format, one CD-R or CD-RW can contain 10 times as
much data volume as a regular CD can.
*
Bit rate is the average number of bits that one second of audio
data will consume. The unit used is kbps (1024 bits/second). To
get a better audio quality, choose a higher bit rate. The most
popular bit rate for encoding and the most recommended for this
3-CD Changer is 128 kbps.
Compatible with ID3v1
Extra information data such as album title, performer name,
song title, recording year, music genre and a brief comment
can be stored within an MP3 track.
3-CD Changer can show ID3v1 tags (album title, performer
name and song title) on the display.
• Some characters cannot be shown correctly.
• 3-CD Changer is not compatible with ID3v2.
Other Main Features in this unit:
• Maximum number of groups (directories)/files (files):
512 (total)
• Available characters for group/track names:
A–Z, 0–9, _ (underscore)
• Maximum number of characters for track name
(ISO 9660 Level 1): 12 (inclusive of separation mark—“.”
and extension code—“mp3”)
(ISO 9660 Level 2): 31 (inclusive of separation mark—“.”
and extension code—“mp3”)
• Maximum number of characters for group name: 31
• 3-CD Changer cannot read or play an MP3 track without the
extension code—mp3.
• 3-CD Changer can only read MP3 tracks compliant with ISO 9660
Level 1 or Level 2.
• Unfinalized discs cannot be played back.
• “Packet Writing” discs cannot be played back.
• If a disc is recorded with multiple sessions, only the first session
can be played back. However if a session is not closed (not
finalized), it cannot be played back.
MP3 Disc Structure
MP3 “tracks (files)” can be recorded in “groups
(directories)”—in PC terminology.
During recording, the tracks and groups can be arranged in a
way similar to arranging files and directories of computer
data.
“Root” is similar to the root of a tree. Every track and group
can be linked to and be accessed from the root.
Playback order, track search order, and group search order
of the MP3 tracks recorded on a disc are determined by the
writing (or encoding) application; therefore, playback order
may be different from the one you have intended while
recording the groups and the tracks.
The illustration below shows an example of how MP3 tracks
are recorded on a CD-R or CD-RW, how they are played
back, and how they are searched for on this 3-CD Changer.
MP3 group/track configuration
MP3 playback and search order
• The numbers in circles below the MP3 tracks ( ) indicate
the playback order and search order of the MP3 tracks.
Normally 3-CD Changer plays back MP3 tracks in the
recorded order.
• The numbers inside the groups indicate the playback order
and search order of the groups on an MP3 disc. Normally
3-CD Changer plays back MP3 tracks in the groups in the
recorded order.
1312
18
19
17
87
1 2
5 6
3 4
02
03
ROOT
15 1614
06 07
05
01
9
10
11
04
ROOT
:ROOT
01
:Groups
:MP3 tracks
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Hierarchy
• You can play back MP3 tracks (files) recorded on MP3 discs (CD-R/CD-RW) on the built-in 3-CD Changer.
• You cannot record MP3 tracks using the built-in CD Recorder.
• Program Play, Random Play and Pitch Control are not available for MP3 discs.
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