Aiwa XD-SPM823 operating instructions Playing an MP3 Disc, Glossary

Playing an MP3 Disc

The unit can play MP3 audio recorded on CD-ROM, CD-R or CD-RW discs.

Before playing an MP3 disc, read the following notes.

Notes on MP3 discs

An MP3 file stores audio data compressed using MPEG 1, the audio layer-3 file-coding scheme.

In this manual, we refer to what, in PC terminology, are called "folders" and "files" as "albums" and "tracks", respectively.

Notes on playing MP3

•The unit can play MP3 discs containing audio data compressed using MPEG 1, the audio layer-3 file-coding scheme and complying with ISO 9660. Note however, that the unit may not play tracks in the order they were recorded.

•The maximum allowable number of tracks and/or albums in a disc is 200, including the root albums (directories).

•The maximum allowable depth of a nested album is 50, including tracks.

•If a disc contains audio tracks and MP3 tracks, the unit cannot play it.

•As for multi-session discs, the unit plays only the first session.

•The unit can play only MP3 tracks which were converted with a sampling frequency of 44.1 kHz and a fixed bit rate of 128 kbps.

•The unit may not play MP3 tracks recorded using a packet writing utility.

•The unit can play only MP3 tracks having a file extension ".mp3".

•It may take 30 seconds or more before the unit can start playing MP3 tracks, depending on the number of recorded tracks and the complexity of the album tree.

•If you play a non-MP3 track that has the ".mp3" file extension, you may hear some noise.

•Digital audio signals cannot be output from the DIGITAL OUT (OPTICAL/COAXIAL) of this unit, when playing MP3 discs. In this case, connect AUDIO OUT 1 or 2 L/R jacks to the analog audio input jacks of the audio equipment (see page 19).

Notes on display indications during playback

•Up to 8 characters are displayed for the name of a track.

•Characters other than uppercase letters ("A" to "Z"), numerals ("0" to "9") and underscore ("_") may not be displayed, or may be displayed in different characters.

•The elapsed play time may not be displayed correctly for MP3 tracks.

•Depending on the condition of the recording equipment or the CD-R/RW disc itself, a false track which cannot be played on the unit may be displayed.

Notes on creating MP3 discs

•When converting audio data to MP3

Create MP3 files with a sampling frequency of 44.1 kHz and a fixed bit rate of 128 kbps.

•When creating MP3 discs

Do not store more than 200 albums and/or tracks in a disc.

•To play tracks in the order they were recorded

1.Use a writing software capable of recording MP3 tracks (files) in numerical and alphabetical order. For details on using the software, refer to the operating instructions supplied with the software.

2.Use only one album. (Do not create a sub-album within an album.)

3.Include a two or three-digit number at the beginning of each album or track name so that the albums and tracks are played in order.

<Example of recommended name structure> 01XXXXX.mp3

02XXXXX.mp3

03XXXXX.mp3

04XXXXX.mp3

05XXXXX.mp3

<Avoid using the following structure> 1XXXXX.mp3

5XXXXX.mp3

10XXXXX.mp3

15XXXXX.mp3

20XXXXX.mp3

(The beginning numbers determine the order, therefore the tracks shown above will be played in the wrong order, i.e., "1", "10", "15", "20", and "5".)

Glossary

File extension:

A 3-character string added to a file name under the Windows or DOS environment is called a "file extension". A file extension is used mainly to identify types of files. The file extension for MP3 files is ".mp3".

ISO 9660:

ISO stands for the "International Organization for Standardization". ISO 9660 determines the file structure for the CD-ROMs. This unit can play MP3 files recorded in the format compliant with ISO 9660.

Nesting of folders (albums):

To organize data files stored in a PC, you can store related files in a folder. A folder can contain other folders as well as files. For example, folder A can contain folder B, and folder B can contain folder C; this is called "nesting of folders".

MORE FEATURES

En

Session:

A session is one uninterrupted section of written data on a disc.

A multi-session disc is a disc which has more than two sessions.

CONTINUE

ENGLISH 41