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TERMS
Packet write—
This is a general term that describes the
process of writing data on−demand to
CD−R, etc., in the same way that data is
written to floppy or hard discs.
Bit rate—
Bit rate refers to data volume per second,
or bps units (bits per second). The higher
the rate, the more information is available
to reproduce the sound. The higher the
rate, the better the sound.
Multi−session—
Multi−session is a recording method that
allows additional data to be recorded later.
When recording data on a CD−ROM,
CD−R or CD−RW, etc., all data from be-
ginning to end is treated as a single unit
or session. Multi−session is a method of
recording more than 2 sessions on one
disc.
CD−DA—
CD−DA is an abbreviation for Compact
Disc Digital Audio. It refers to the uncom-
pressed format of regular CDs.
ID3 Tag—
This is a method of embedding track−re-
lated information in an MP3 file. This em-
bedded information can include the track
title, the artist’s name, the album title, the
music genre, the year of production, com-
ments and other data. The contents can
be freely edited using software with ID3
tag editing functions. Although the tags
are restricted to the number of characters,
the information can be viewed when the
track is played back.
WMA Tag—
WMA files can contain a WMA tag that is
used in the same way as an ID3 tag.
WMA tags carry information such as track
title, artist name.
ISO 9660 format—
This is the international standard for the
formatting of CD−ROM folders and files.
For the ISO 9660 format, there are two
levels of regulations.
Level 1:
The file name is in 8.3 format (8 charac-
ter file names, with a 3 character file
extension. File names must be composed
of one−byte capital letters and numbers.
The “_” symbol may also be included.)
Level 2:
The file name can have up to 31 charac-
ters (including the separation mark “.” and
file extension). Each folder must contain
fewer than 8 hierarchies.
Extended formats
Joliet:
File names can include up to 64 charac-
ters.
Romeo:
File names can include up to 128 charac-
ters.
m3u—
Playlists created using “WINAMP” software
have a playlist file extension (.m3u).
MP3—
MP3 is an audio compression standard
determined by a working group (MPEG) of
the ISO (International Standard Organiza-
tion). MP3 compresses audio data to
about 1/10 the size of that on convention-
al discs.
WMA—
WMA (Windows Media Audio) is an audio
compression format developed by Micro-
soft. It compresses files into a size small-
er than that of MP3 files. The decoding
formats for WMA files are Ver7, 8, and 9.
07 12.25
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