Notes on mp3/wma, English, What is mp3/wma – Panasonic CQ-VD7003U User Manual

Page 24: Points to remember when making mp3/wma files, Display information, Caution

Advertising
background image

23

24

CQ-VD7003U

English

Notes on MP3/WMA

What is MP3/WMA?

MP3 (MPEG Audio Layer-3) and WMA (Windows Media

TM

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 (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 recommend-

ed 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 encod-

ing 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.

Display Information

Displayed items

Displayable characters

¡ Displayable length of file name/folder name: within 128

characters. (Unicoded file and folder names are reduced by
half in the number of displayable characters.)

¡ Name files and folders in accordance with the standard of

each file system. Refer to the instructions of writing soft-
ware for details.

¡ ASCII character set and special characters in each language

can be displayed.

¡ Some Cyrillic characters in the Unicode 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/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).

¡ CD-TEXT

Disc title

Track title

¡ MP3/WMA

Folder name

File name

¡ MP3 (ID3 tag)

Album name

Title and artist name

¡ WMA (WMA tag)

Album name

Title and artist name

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 produce noise from
the speaker damage, but also damage your
hearing.

Advertising