Notes On Mp3/Wma - Panasonic CQ-C3401 Operating Instructions Manual

Notes on MP3/WMA

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What is MP3/WMA?
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MP3 (MPEG Audio Layer-3) and WMA (Windows Media
H
are the compression formats of digital audio. The former is
15 developed by MPEG (Motion Picture Experts Group), and the
latter is developed by Microsoft Corporation. Using these
compression formats, 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/WMA encoding and CD writing software programs are
not supplied with this unit.
Points to remember when making MP3/WMA files
Common
¡ 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.
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 protection on the WMA file to enable this
unit to play back.
Caution
¡Never assign the ".mp3", or ".wma" file
name extension to a file that is not in the
MP3/WMA format. This may not only pro-
duce noise from the speaker damage, but
also damage your hearing.
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CQ-C3401W
Display Information
TM Audio)
Displayed items
¡ CD-TEXT ¡ MP3 (ID3 tag)
Disc title Album name
Track title Title and artist name
¡ WMA (WMA tag)
¡ MP3/WMA
Album name
Folder name
Title and artist name
File name
Displayable characters
¡ Displayable length of file name/folder name: within 128 char-
acters.
¡ 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 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 _ ` { | }
~
Special characters
À Á Â Ã Å à á â ã å
Ä ä
Ò Ó Ô Õ Ö ò ó ô õ ö
Ù Ú Û Ü ù ú û ü
Note:
¡ With some software in which MP3/WMA format files have
been encoded, the character information may not be dis-
played 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).
Windows Media, and the
Windows logo are trademarks,
or registered trademarks of
Microsoft Corporation in the
United States and/or other
countries.
Recording MP3/WMA files on a CD-media Recording MP3/WMA files on a CD-media
¡ You are recommended to minimize the chances of making a
disc that contains both CD-DA files and MP3/WMA files.
¡ If CD-DA files are on the same disc as MP3 or WMA files,
the songs may not play in the intended order, or some
songs may not play at all.
¡ When storing MP3 data and WMA data on the same disc,
use different folders for each data.
¡ Do not record files other than MP3/WMA files and unneces-
sary folder on a disc.
¡ The name of an MP3/WMA 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" or ".wma" should be assigned to
each file depending on the file format.
Compression formats
( Recommendation: "Points to remember when making MP3/WMA files" on the previous page)
Compression method Bit rate
MPEG 1 audio layer 3 (MP3) 32 k – 320 kbps
MPEG 2 audio layer 3 (MP3) 8 k – 160 kbps
Windows Media Audio Ver. 2, 8 64 k – 192 kbps
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/WMA file.
¡ If the selected folder does not contain any MP3/WMA files, the near-
est MP3/WMA files in the order of playback will be played.
¡ Playback order may be different from other MP3/WMA players even if
the same disc is used.
¡ "ROOT" appears when displaying the root folder name.
¡ You may encounter trouble in playing MP3/WMA files or dis-
playing the information of MP3/WMA files recorded with cer-
tain 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.
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.
VBR Sampling frequency
Yes 32, 44.1, 48 kHz
Yes 16, 22.05, 24 kHz
No 32, 44.1, 48 kHz
Root Folder
1
(Root Directory)
2
q
Folder Selection
4
e
In the order
1 –
3
w
File Selection
In the order
–
5
q
6
r
8
t
y
7
Tree 1 Tree 2 Tree 3 Tree 4
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/WMA.
CQ-C3401W
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Tree 8
(Max.)
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