Panasonic C9801W, CQ-C9901W MP3/WMA Player, What is MP3/WMA?, Display Information

MP3/WMA Player

What is MP3/WMA?

MP3 (MPEG Audio Layer-3) and WMA (Windows MediaTM Audio) are the compression formats of digital audio. The former is 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 media (This figures refer to data recorded on a 650MB CD-R or CD-RW at a fixed bit rate of 128 kbps and a sampling frequency of 44.1 kHz).

Notes:

¡MP3/WMA encoding and CD writing software pro- grams are not supplied with this unit.

¡CD writing software is not supplied with this unit.

Display Information

Displayed items

¡ CD-TEXT	¡ MP3 (ID3 tag)
Disc title	Album name
Track title	Title name/Artist name
¡ MP3/WMA	¡ WMA (WMA tag)
Folder name	Album name
File name	Title name/Artist name

Displayable characters

¡ Displayable length of file name/folder name: within 64

characters.

¡ Name files and folders in accordance with the stan-

dard of each file system. Refer to the instructions of

writing software for details.

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 unnecessary folder on a disc.

¡The name of MP3/WMA file should be added by rules as shown in the following descriptions and also com- ply with the rules of each file system.

¡The file extension “.mp3” or “.wma” should be assigned to each file depending on the file format.

¡You may encounter trouble in playing MP3/WMA files or displaying the information of MP3/WMA files recorded with certain writing software or CD recorders.

¡This unit does not have the 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 mode CD, CD Extra are not supported.

English

Notes on MP3/WMA

Points to remember when making MP3/WMA files

Common

¡High bit rate and high sampling frequency are recom- mended 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 user manual 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 protect attribute on the WMA file to enable this unit to play back.

Caution

¡ ASCII character set and special characters in each lan-

guage can be displayed.

ASCII character set

A to Z, a to z, digits 0 to 9, and the following sym- bols:

(space) ! ” # $ % & ’ ( ) * + , - . / : ; < = > ? @ [ \ ] ˆ _ ` { } ~

Notes:

¡With some software in which MP3/WMA format files have been encoded, the character information may not be displayed properly.

¡Undisplayable characters and symbols will be convert- ed into an asterisk (*).

¡It is recommended that the length of the file name is less than 8 (excluding the file extension).

Notes on MP3/WMA (continued)

Compression formats

(Recommendation: “Points to remember when making MP3/WMA files” on the previous page)

Compression method

Bit rate

VBR

Sampling frequency

MPEG 1 audio layer 3 (MP3)

32 k-320 kbps

Yes

32, 44.1, 48 kHz

MPEG 2 audio layer 3 (MP3)

8 k-160 kbps

Yes

16, 22.05, 24 kHz

Windows Media Audio Ver. 2, 8

64 k-192 kbps

No

32, 44.1, 48 kHz

Player

Folder selection order/file playback order

Maximum number of files/folders

MP3/WMA

1

Root Folder

¡ Maximum number of files: 999

(Root Directory)

¡ Maximum number of files in one folder: 255

2

q

¡ Maximum depth of trees: 8

Folder Selection

¡ Maximum number of folders: 255 (Root folder is

4

e

In the order 1

– 8

included.)

3

w

File Selection

Notes:

¡ This unit counts the number of folders irrespective of

5

In the order

–

q

y

the presence or absence of MP3/WMA file.

6

r

¡ If the selected folder does not contain any MP3/WMA

files, the nearest MP3/WMA files in the order of play-

8

t

back will be played.

7

y

¡ Playback order may be different from other MP3/WMA

Tree 1 Tree 2 Tree 3

Tree 4

Tree 8

players even if the same disc is used.

(Max.)

¡“ROOT” appears when displaying the root folder name.

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.

Windows Media, and the Windows logo are trademarks, or regis- tered trademarks of Microsoft Corporation in the United States and/or other countries.

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.

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