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MP3/WMA/JPEG and Audio CD operation
This unit can playback the MP3/WMA/JPEG-data which has been recorded on CD-R/RW. Audio CD also can be
played back. To produce the MP3/WMA JPEG-data, you need a Windows-PC with CD-RW drive and a MP3/WMA
JPEG-encoding Software (not supplied). The Apple-HFS-System cannot be played.
This unit requires discs/recordings to meet certain technical standards in order to achieve optimal playback quality.
There are many different types of recordable disc formats (including CD-R containing MP3/WMA files). Not all
recordable discs will produce optimal playback quality. The technical criteria set forth in this instruction manual are
meant only as a guide. Use of CD-RW for MP3 files is not recommended.
MP3/WMA/JPEG - data information
Limitations on MP3/WMA/JPEG playback
• MP3/WMA/JPEG CD are standardized by ISO9660, its file name must include following extensions; “.mp3”,
“.wma”, “.jpg”.
• MP3/WMA/JPEG CD must be corresponded to the ISO standardized files.
• This unit can read 2000 files per disc. If one disc has more than 2000 files, it reads up to 2000 files, the
remaining files will be omitted.
• MP3/WMA/JPEG CDs cannot be used for the purpose of recording on this unit.
• If the CD has both CDA audio tracks and MP3/WMA/JPEG files, only the CDA audio tracks will be played.
• It may take more than one minute for this unit to read MP3/WMA/JPEG files depending on its structure.
• Music recorded by “Joliet Recording Specification” can be played back.
• The music files recorded by “Hierarchical File System” (HFS) cannot be played.
Limitations on displaying of the file name.
• The maximum number for display is 15 characters. Long file names will be condensed.
•Available characters for display are the following:
capital or small alphabets of A through Z, numbers of 0 through 9, and _ (under score).
• Other characters than those above are replaced in hyphen.
To playback MP3/WMA/JPEG CD in the recorded order.
1. Use MP3/WMA/JPEG software that records data alphabetically or numerically.
2. Insert two or three digit number in the head of file name. (ex. “01” “02” or “001” “002”).
3. Refrain from making too many sub-folders.
CAUTION:
• Some MP3/WMA/JPEG CDs cannot be played back depending on the recording conditions.
• The CD-R/RW that has no music data or non MP3/WMA/JPEG files cannot be played back.
Standard sampling frequency and the bit rate:
MP3
MPEG-1 Audio
32kHz, 44.1kHz, 48kHz
32kbps ~ 320kbps (constant bit rate or variable bit rate)
The recommend recording setting for a high-quality sound is 44.1kHz of sampling frequency and 128kbps of
constant bit rate.
WMA
WMA version 7 and 8
32kHz/48kbps, 44.1kHz/48kbps~192kbps, 48kHz/128kbps~192kbps
The file recorded by mono, 48kHz, 48 kbps is not available to this unit.
50A0201A_p38-41.p65 9/12/07, 4:58 PM41