Philips What is MP3, Converting encoding audio data to an MP3 file, 20CQ-DFX972N

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MP3 Player (continued)

Points to remember when recording an MP3 disc

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 systems covered by MPEG’s (Motion Picture Experts Group) digital audio compression standards. What it does is reduce the number of bytes in a song without detracting from the sound quality by 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 contents 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.)

■Converting (encoding) audio data to an MP3 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, and the bit rate value on the AUDIO indicator may flicker.

¡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.

■Recording MP3 files on a CD-R/RW

¡Do not record files other than MP3s or unnecessary folders on a disc. If many folders or files other than MP3s are recorded on a disc, it may take up to 150 seconds before playback starts, and you may have difficulties using fast forward and fast reverse.

¡Use ISO 9660 file system (Extension of the ISO 9660 file systems are included.) APPLE HFS 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 session when you finished recording on a disc.

¡ID3Tag character information is not displayed. A file in which character information was recorded by use of ID3Tag

2.0or later version may not be reproduced normally. For example, the file playing time may not be displayed correctly.

¡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 produce noise from the speakers and speaker damage, but can damage your hearing.

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