Aiwa HT-DV1 - Manual (Page 37)

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37
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TURES
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The system 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
1/2, 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 discs
• An MP3 track must be recorded on a disc in the format
compliant with ISO 9660. Note however, that the system
may not play tracks in the order they were recorded.
• The maximum allowable number of tracks and/or albums
in a disc is 255, including the root albums (directory).
• The maximum allowable depth of a nested folder is 8,
including tracks. Note that since the maximum path length
is 128 characters long, the total number of characters
including slashes, hyphens and underscores from the
root album name to the track name must be less than
128.
• If a disc contains audio tracks and MP3 tracks, the system
can only play audio tracks.
• The system may not play multi-session discs correctly.
• The system can play only MP3 tracks which were
converted with a sampling frequency of 44.1 kHz and a
fixed or variable bit rate.
• The system may not play MP3 tracks recorded using a
packet writing utility.
• The system can play only MP3 tracks having the file
extension ".mp3".
• It may take 30 seconds or more before the system can
start playback of 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.
Notes on display indications during playback
• Up to 30 characters are displayed for the name of an
album and up to 30 characters for the name of track.
• Characters other than letters ("A" to "Z" and "a" to "z"),
numerals ("0" to "9"), hyphen (-) and underscore (_) may
not be displayed, or may be displayed as different
characters.
• The system does not support ID3TAG.
• The elapsed play time may not be displayed correctly for
MP3 tracks.
CONTINUE
PLAYING AN MP3 DISC
Notes on creating MP3 discs
• When converting audio data to MP3
Creating MP3 files with a sampling frequency of 44.1
kHz and a fixed bit rate of 128 kbps is recommended.
• When creating MP3 discs
Do not store more than 255 albums and/or tracks in a
disc.
• To play tracks in the order they were recorded
1. Use writing software capable of recording MP3 tracks
(files) in numerical and alphabetical order. For details,
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 which complies with ISO
9660 Level 2 or the Windows JOLIET format 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".
The 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 system 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".
Session:
A session is one uninterrupted section of written data on a
disc.
A multi-session disc is a disc which has two or more
sessions.