Aiwa 570CDCMP3 manual Descriptions of MP3, Or CD-RWs containing MP3 files

DESCRIPTIONS OF MP3

Notes on MP3

•An MP3 file stores audio data compressed using MPEG1, the audio layer-3 file-coding scheme. We call files that have the “.mp3” extension “MP3 files.”

•The unit can read MP3 files written in the format compliant with ISO 9660. However it does not support the MP3 data copied using a packet writing utility.

•The unit cannot read an MP3 file that has a file extension other than “.mp3.”

•If you play a non-MP3 file that has the “.mp3” extension, you may hear some static.

•In this manual, we refer to what are called “MP3 file” and “folder” in PC terminology as “track” and “album,” respectively.

•The unit can play up to 512 tracks per disc.

•The unit may not play tracks in the order of track numbers.

•It may take 2 minutes or more to scan a CD-R or CD-RW, depending on the complexity of the folder tree.

•The unit plays only the audio tracks if a disc contains both audio tracks and MP3 files.

Notes on indications in the display

•Up to 32 characters are displayed for the name of an album or a track. Characters other than uppercase letters (“A” to “Z”), lowercase letters (“a” to “z”), numerals (“0” to “9”), and underscore (“_”) may not be displayed.

•When playing MP3 files, the elapsed playing time displayed may not be correct.

•To display up to 30 characters for a track name or an artist’s name, ID3TAG version 1.x is required. Characters other than uppercase letters (“A” to “Z”), lowercase letters(“a” to “z”), numerals (“0” to “9”), and underscore (“_”) may not be displayed.

Notes on creating your own CD-Rs

or CD-RWs containing MP3 files

•To enjoy high sound quality, we recommend storing MP3 files with a sampling frequency of 44.1 kHz and a fixed bit rate of 128 kbps.

•Do NOT store more than 512 MP3 files per disc.

•Note that the unit may not play tracks in the order that you wrote them to the disc.

•The unit can read up to 5 sessions with a multi session disc.

•For ISO 9660-compliant format, the maximum allowable depth of nested folders is 8, including the root directory (folder).

Tips on identifying the order of the

tracks

•Include a two- or three-digit number at the beginning of each album or track name. (e.g. “01,” “02,” … or “001,” “002,” …)

If you use the numbers such as “1,” “2,” “3,” … ”9,” “10,” “11,” …, the unit unexpectedly plays in the order of “1,” “10,” “11,” … “2,” “20,” “21,” … “3,” “30,” “31,” and so on.

•It is recommended that you use only the parent folders (do not create child folders under a folder).

•Writing software capable of writing MP3 files in numerical and alphabetical order is required if you want them in order. For details on using the software, refer to the operating instructions supplied with your software.

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