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DXZ945MP 27
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CD / MP3 / WMA Operations
What is MP3?
MP3 is an audio compression method and is
classified as audio layer 3 of the MPEG
standard.
This audio compression method has gained
ground into PC users and Become a standard
format.
This MP3 features original audio data
compression to about 10 percent of its initial
size while keeping high sound quality intact.
This means that about 10 music CDs can be
recorded on a CD-R disc or CD-RW disc to
allow a long listening time without having to
change CDs.
What is WMA?
WMA is the abbreviation of Windows Media
Audio, an audio file format developed by
Microsoft Corporation.
Notes:
• If you play a file with DRM (Digital Rights
Management) for WMA remaining ON, no audio is
output. (The WMA indicator blinks)
• Windows Media™, and the Windows
®
logo are
trademarks, or stored trademarks of Microsoft
Corporation in the United States and/or other
countries.
● To disable DRM (Digital Rights
Management):
• When using Windows Media Player 8, click on
TOOLS ➜ OPTIONS ➜ COPY MUSIC tab,
then under COPY SETTINGS, unclick the
check box for PROTECT CONTENT. Then,
reconstruct files.
• When using Windows Media Player 9, click on
TOOLS ➜ OPTIONS ➜ MUSIC record tab,
then under COPY SETTINGS, unclick the
check box for PROTECT CONTENT. Then,
reconstruct files.
Personally constructed WMA files are used at
your own responsibility.
Precautions when creating an
MP3/WMA disc
● Usable sampling rates and bit rates:
1. MP3:
Sampling rate: 11.025 kHz to 48 kHz
Bit rate: 8 kbps to 320 kbps / VBR
2. WMA:
Bit rate 48 kbps to 192 kbps
● File extensions
1. Always add a file extension “.MP3” or
“.WMA” to an MP3 or WMA file by using
single byte letters. If you add a file extension
other than specified or forget to add the file
extension, the file cannot be played.
2. Files without MP3/WMA data will not play.
The indication “--: --” appears in the playing
time display if you attempt to play files
without MP3/WMA data.
● Logical format (File system)
1. When writing an MP3/WMA file on a CD-R
disc or CD-RW disc, please select “ISO9660
level 1, 2 or JOLIET or Romeo” as the
writing software format. Normal play may not
be possible if the disc is recorded on another
format.
2. The folder name and file name can be
displayed as the title in the case of MP3/
WMA play but the title must be within 128
single byte alphabetical letters and numerals
(including an extension).
3. Do not give a name to a file inside a folder
having the same name.
● Folder structure
1. A disc with a folder having more than 8
hierarchical levels is not allowed.
● Number of files or folders
1. Up to 255 files can be recognized per folder.
Up to 500 files can be played.
2. Tracks are played in the order that they were
recorded onto a disc. (Tracks might not
always be played in the order displayed on
the PC.)
3. Some noise may occur depending on the
type of encoder software used while
recording.