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CQ-C500U
20
MP3/WMA/AAC Player
What is MP3/WMA/AAC?
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 media (This figures refer 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).
* MPEG Layer-3 audio coding technology licensed from
Fraunhofer IIS and Thomson.
AAC is an abbreviation for “Advanced Audio Coding”.
It has been defined as a standard for audio compression
technology using MPEG 2 and MPEG 4.
Note: MP3/WMA/AAC encoding and writing software is
not supplied with this unit.
Points to remember when making
MP3/WMA/AAC files
Common
• High bit rate and high sampling frequency are
recommended for high quality sounds.
• Selecting Variable Bit Rate (VBR) is not recommended
because playing time is not displayed properly and
sound may be skipped.
• Selecting Variable Bit Rate (VBR) is not recommended
because Re-master function may have little effect in
some cases.
• 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 protect attribute on the WMA file
to enable this unit to play back.
AAC
• It is recommended to set the bit rate to “128 kbps or
more” and “fixed”.
• The formats and extensions for AAC data vary
according to the encoder software used.
• AAC files which can be played on this unit have the
“.m4a” extension and were encoded with Apple
iTunes
®
version 6.
• The file extension for files encoded with the iTunes
Apple Lossless Encoder is “.m4a”, but such files
cannot be played on this player.
• Files under copyright protection cannot be played.
Display Information
Displayed items
• CD-TEXT
Disc title
Track title
• MP3 (ID3 tag)
Album name
Title name/artist name
•
MP3/WMA/AAC
Folder name
File name
• WMA (WMA tag)
Album name
Title name/artist name
• AAC (Song information)
Album name
Title name/artist name
Displayable characters
•
Displayable length of file name/folder name: within
32 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
software 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 _
` { | } ~
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
Notes:
• With some software in which MP3/WMA/AAC 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).
Caution
Never assign the “.mp3”, “.wma” or “.m4a”
file name extension to a file that is not
in the MP3/WMA/AAC format. This may
not only produce noise from the speaker
damage, but also damage your hearing.
Notes on MP3/WMA/AAC
iTunes is a trademark of Apple Computer, Inc.,
registered in the U.S. and other countries/regions.
Windows Media, and the Windows
logo are trademarks, or registered
trademarks of Microsoft Corporation
in the United States and/or other
countries/regions.