Panasonic CQ-DP171U - Manual (Page 38)

Notes on MP3
This player allows you to play MP3 files recorded on CD-ROMs, CD-Rs
(Recordable) and CD-RWs (Rewritable).
What is MP3
MP3, short for MPEG Audio Layer-3, is a standard for compressing digital video data adopted for video CDs and similar
media. It is one of the audio compression schemes covered by MPEG’s (Motion Picture Experts Group) digital audio com­
pression standards. What it does is reduce the number of bytes in a song without hurting the sound quality by means such
as eliminating big sound waves within the sound range that is imperceptible to the human ear. This compression allows
you to reduce the contents of a conventional music CD by a factor of around 10. This means that you can record the con­
tents of 10 music CDs on a single CD-R or CD-RW. (The 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.)
Points to remember when recording an MP3 disc
Converting (encoding) audio data to an IVIP3 file
• It is recommended to set the bit rate to “128 kbps or more” and “Fixed".
• Bit rate 8 kbps of MPEG-2 and sampling frequency 16 kHz of MPEG-2 can not be reproduced.
• If set to VBR (Variable Bit Rate), the file playing time may not be displayed correctly.
• The playback sound quality differs depending on the encoding software and the bit rate. For details refer to the user
manual of your encoding software.
I Recording MP3 files on a CD-R/RW
• Do not record files other than MP3s or unnecessary folders on a disc.
If too many folders or files other than MP3s are
recorded on a disc, it may take some time before playback starts, and you may have difficulties using fast forward and fas
reverse.
• Use ISO 9660 file system (Extension of the ISO 9660 file systems are included.) page 39). APPLE NFS file system
is not supported.
If they do not conform to ISO 9660 file system, the file may not play normally, or the file or folder
names may not be displayed correctly.
• Make sure to add the “.mp3" extension to each MP3 file name.
A file with a different file name extension or none at all
will not play.
• Although Multi session recording is supported, the use of Disc-at-Once is recommended.
Make sure to close the ses­
sion when you finished recording on a disc.
• ID3Tags are not supported.
The song information is stored but not displayed.
• Packet writing software is not supported.
• A playlist function is not supported.
Record files and folders in the order in which you want them to be played. Some
writing software lets you specify the recording order by adding a prefix in the range of “01 ” - “99”, etc. to the file name.
For details refer to the user manual of your writing software.
Note: You may encounter trouble in playing MP3s or displaying the information of MP3 files recorded with certain writing
softwares or CD recorders (CD-R/RW drives).
Caution: Never assign the “.mp3" file name extension to a file that is not in the MP3 format. This may not only pro­
duce noise from the speakers and speaker damage, but can damage your hearing.
Note: MP3 encode software and writing software are not supplied to this model.
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CQ-DP171U