Notes on MP3
What is MP3?
MP3 (MPEG Audio Layer-3) is the compression format of digital
audio. It is developed by MPEG (Motion Picture Experts Group).
Using this compression format, 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).
Note:
¡ MP3 encoding and CD writing software programs are not
supplied with this unit.
Points to remember when making MP3 files
¡ 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.
¡ It is recommended to set the bit rate to “128 kbps or more”
and “fixed”.
Display Information
Displayed items
Displayable characters
¡ Displayable length of file name/folder name: within 64 charac-
ters.
¡ 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 can be displayed.
ASCII character set
A to Z, a to z, digits 0 to 9, and the following symbols:
(space) ! ” # $ % & ’ ( ) * + , - . / : ; < = > ? @ [ \ ] ˆ _ ` { | }
~
Note:
¡ With some software in which MP3 format files have been
encoded, the character information may not be displayed
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
Folder name
File name
¡ MP3 (ID3 tag)
Album name
Title and Artist name
Caution
¡ Never assign the “.mp3” file name exten-
sion to a file that is not in the MP3 format.
This may not only produce noise from the
speaker damage, but also damage your
hearing.
¡ You are recommended to minimize the chances of making a
disc that contains both CD-DA files and MP3 files.
¡ If CD-DA files are on the same disc as MP3 files, the songs
may not play in the intended order, or some songs may not
play at all.
¡ Do not record files other than MP3 files and unnecessary fold-
er on a disc.
¡ The name of an MP3 file should be added by rules as shown
in the following descriptions and also comply with the rules of
each file system.
¡ The file extension “.mp3” should be assigned to each file
depending on the file format.
¡ You may encounter trouble in playing MP3 files or displaying
the information of MP3 files recorded with certain writing
software or CD recorders.
¡ This unit does not have a play list function.
¡ Although Multi-session recording is supported, the use of
Disc-at-Once is recommended.
¡ Packet writing software is not supported.
Supported file systems
ISO 9660 Level 1/Level 2, Apple Extension to ISO 9660, Joliet,
Romeo
Note:
¡ Apple HFS, UDF 1.50, Mix CD and CD Extra are not supported.
Recording MP3/WMA files on a CD-media
Folder selection order/file playback order
Maximum number of files/folders
¡ Maximum number of files: 999
¡ Maximum number of files in one folder: 255
¡ Maximum depth of trees: 8
¡ Maximum number of folders: 255 (Root folder is included.)
Note:
¡ This unit counts the number of folders irrespective of the presence or
absence of an MP3 file.
¡ If the selected folder does not contain any MP3 files, the nearest MP3
files in the order of playback will be played.
¡ Playback order may be different from other MP3 players even if the
same disc is used.
¡ “ROOT” appears when displaying the root folder name.
Copyright
It is prohibited by copyright laws to copy, distribute and
deliver copyrighted materials such as music without the
approval of copyright holder except enjoying yourself
personally.
No warranty
Above description complies with our investigations as of
December 2004. It has no warranty for reproducibility
and displayability of MP3.
Recording MP3 files on a CD-media
16, 22.05, 24 kHzYes8 k – 160 kbpsMPEG 2 audio layer 3 (MP3)
32, 44.1, 48 kHzYes32 k – 320 kbpsMPEG 1 audio layer 3 (MP3)
Sampling frequencyVBRBit rateCompression method
Compression formats (Recommendation: “Points to remember when making MP3 files” on the previous page)
